Assembly alignment equipment

Abstract

The present invention discloses an assembly alignment device, including a conveying device, a connecting device, a screwing device, a glue dispensing device, an adjustment 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 connecting device 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 set the sprayed fasteners on the pen core; the screwing device is used to screw the fasteners set on the pen core so that they are screwed into the pen barrel and located at the pre-installed position; the glue dispensing device is used to apply thread glue on the outer thread of the pen core at the pre-installed position; the adjustment device is used to screw the fasteners at the pre-installed position so that the fasteners are adjusted and bonded at the assembly position. The assembly alignment device of the present invention can realize automated flow operation, with simple structure, high assembly accuracy and high efficiency.

Description

Technical Field

[0001] The invention relates to an assembly device, in particular to an 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 fix the smaller fasteners between the pen barrel and the refill with glue. In addition, in order to prevent damage to the electronic components on the inner wall of the pen barrel and the outer wall of the refill, the assembly clearance of the fastener relative to the pen barrel and the refill must be controlled within a limited range of values. 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 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 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 assembly alignment device, which is suitable for assembling fasteners between a pen core and a pen barrel of a stylus pen. The assembly alignment device comprises a conveying device, a assembling device, a screwing device, a dispensing device and an adjusting 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 assembling device travels back and forth between the conveying device and the spraying device to dispensing the fasteners supported on the positioning fixture and the stylus pen fixed in the positioning fixture. The fastener on the positioning fixture is transferred to the spraying device, and the catalyst is sprayed on the inner wall of the fastener in cooperation with the spraying device, and is also used to put the sprayed fastener on the pen core; the screwing device is used to screw the fastener put on the pen core so that it is screwed into the pen barrel and located at the pre-installed position; the glue dispensing device is used to dispense thread glue on the outer thread of the pen core at the pre-installed position; the adjustment device is used to screw the fastener at the pre-installed position so that the fastener is adjusted and bonded at the assembly position.

[0006] Compared with the prior art, the assembly alignment equipment of the present invention includes an assembling device, a screwing device, a glue dispensing device and an adjustment device arranged in sequence along the conveying direction of the conveying device, and a spraying device arranged beside the assembling device. The fasteners supported on the positioning fixture and the stylus fixed in the positioning fixture are transported by the conveying device, wherein the assembling device transfers the fasteners on the positioning fixture to the spraying device, and cooperates with the spraying device to spray a catalyst on the inner wall of the fastener, and then the fastener is put on the pen core, and then the screwing device screws the fastener to the pre-installed position in the pen barrel. At this time, the glue dispensing device then dispenses thread glue on the outer thread of the pen core. When the adjusting device screws the fastener, under the action of the catalyst and the thread glue, the fastener adjusted to the assembly position is firmly bonded to the assembly position. The assembly alignment equipment of the present invention can realize automated assembly line operation and has a simple structure. The assembly accuracy is effectively guaranteed by first aligning and placing, then rotating and pre-aligning, and finally adjusting to the position. In addition, the catalyst is sprayed first and then the thread glue is applied. The glue application accuracy is high, and the coordination of the catalyst and the thread glue effectively improves the bonding firmness, which effectively guarantees the product quality while improving the production efficiency.

[0007] Preferably, the conveying device includes two conveying rails arranged side by side, a connecting device, a screwing device and a gluing device are sequentially mounted above the two conveying rails and can move back and forth between the two conveying rails, the two adjustment devices are arranged on the rear side of the gluing 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 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.

[0010] Preferably, the assembly device includes a clamp and an assembly drive mechanism connected to the clamp, the assembly drive mechanism can drive the clamp to make a linear motion to grab and transfer the fastener, the clamp drive mechanism can also drive the clamp to rotate 90° first, so that the fastener turns from horizontal to vertical, and then drive the clamp to rotate 360° relative to the nozzle of the spray device, so that the inner wall of the fastener is sprayed with the catalyst circumferentially.

[0011] Preferably, the screwing device comprises a twist joint, which 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.

[0012] Preferably, the glue dispensing nozzle of the glue dispensing device is swingable so that the glue dispensing nozzle can extend into the pen barrel through a slot hole provided on the barrel wall of the pen barrel to dispense thread glue to the pen core.

[0013] Preferably, the adjustment device includes a twist joint disposed above the conveying device, the twist joint can move linearly to be plugged into or separated from the fastener, and the twist joint can also rotate to drive the fastener to rotate around the pen core until it is screwed into the assembly position.

[0014] Preferably, the adjustment device also includes a positioning member and an industrial camera. The positioning member is arranged on the side of the conveying device, and can make a linear motion close to or away from the positioning fixture to clamp or loosen the pen holder. An industrial camera is arranged above and on the side of the conveying device. The industrial camera above is used to identify the position of the fastener, and the industrial camera on the side is used to identify the assembly gap between the fastener and the pen holder.

[0015] Preferably, the assembly alignment equipment further comprises a loading device, which is disposed at the front side of the assembly device and is used for placing the fastener on the positioning column of the positioning fixture and detecting whether the fastener is placed. 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 schematic diagram of the three-dimensional structure of the assembly alignment device of the present invention.

[0019] Figure 4 It is a schematic diagram of the planar structure of the 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 feeding 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 schematic diagram of the three-dimensional structure of the screwing device of the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the twist joint of the present invention.

[0025] Fig.10 for Figure 5 Enlarged view of part A.

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the glue dispensing device of the present invention.

[0027] Fig.12 It is a schematic diagram of the three-dimensional structure of the adjustment device of the present invention.

[0028] Fig.13 It is a schematic diagram of the local structure of the adjustment device of the present invention. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1 and Figure 2The 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 end 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. The wall of the pen barrel 202 is provided with three slots 2021 equally divided along its circumference, through which the assembly state of the fastener 300 in the pen barrel 202 can be observed. When the fastener 300 is assembled to the required assembly position w1, the assembly gap h between its bottom end surface and the reference surface in the pen barrel 202 needs to be controlled at about 2.5 mm, with an error of plus or minus 0.01 mm.

[0031] See also Figures 2 to 4 The present invention discloses an assembly alignment device 100, which is suitable for assembling a fastener 300 between a refill 201 and a pen barrel 202 of a stylus pen 200. The fastener 300 is accurately aligned and screwed between the refill 201 and the pen barrel 202, and then thread glue is applied to the external thread of the refill 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 refill 201, thereby strengthening the firmness of the refill 201 in the pen barrel 202 and avoiding shaking. Specifically, the assembly alignment device 100 of the present invention includes a conveying device 10 arranged along the longitudinal direction of a working platform 101, a assembling device 20, a screwing device 30, a glue dispensing device 40 and an adjusting device 50 arranged in sequence along the conveying direction of the conveying device 10, and a spraying device 60 arranged beside the assembling device 20. The conveying device 10 is used to convey the fastener 300 supported on the positioning fixture 70 and the stylus 200 fixed in the positioning fixture 70; the assembly device 20 travels back and forth between the conveying device 10 and the spraying device 60, and is used to transfer the fastener 300 on the positioning fixture 70 to the spraying device 60, and cooperate with the spraying device 60 to spray the catalyst on the inner wall of the fastener 300, and is also used to put the sprayed fastener 300 on the pen core 201; the screwing device 30 is used to screw the fastener 300 put on the pen core 201, so that it is screwed into the pen barrel 202 and located at the pre-installed position; the glue dispensing device 40 is used to dispense thread glue on the outer thread of the pen core 201 at the pre-installed position; the adjustment device 50 is used to screw the fastener 300 at the pre-installed position, so that the fastener 300 is adjusted and bonded at the assembly position w1.

[0032] Of course, the assembly alignment device 100 disclosed in the present invention also includes a casing (not shown in the figure) covering the outside of the conveying device 10, the assembling device 20, the screwing device 30, the glue dispensing device 40, the adjustment device 50 and the spraying device 60, and a control system. The control system is used to control the coordinated actions between the conveying device 10, the assembling device 20, the screwing device 30, the glue dispensing device 40, the adjustment device 50 and the spraying device 60 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.

[0033] Combination Figures 3 to 5 In order to balance the production line and improve efficiency, the conveying device 10 includes two conveying rails 11 arranged side by side. The number of the assembly device 20, the screwing device 30 and the glue dispensing device 40 is one, and the three 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 60 is at least one, which can be fixed on the side of any conveying rail 11. Since the time required for adjusting the alignment is relatively long, the adjustment device 50 is set on the rear side of the glue dispensing device 40 in a one-to-one correspondence with the two conveying rails 11.

[0034] 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 70 so that the positioning fixture 70 can be detached from or fall back onto the conveying guide rail 11. The push member 123 is used to push the positioning fixture 70 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 70 between the two conveying guide rails 11, avoiding the problems of positioning and transfer when changing tracks by a robot.

[0035] Combination Figure 2 and Figure 6In a preferred embodiment of the present invention, in order to realize the support of the fastener 300 by the positioning fixture 70, the assembly alignment device 100 of the present invention further includes a loading device 80, which is disposed on the front side of the assembly device 20, and is used to place the fastener 300 on the positioning column 71 of the positioning fixture 70 and detect whether the fastener 300 is placed. Specifically, the loading device 80 includes a loading rail 81 that can be connected to the conveying rail 11, a loading robot (not shown in the figure) disposed on the upper side end of the loading rail 81, and a loading detection mechanism 82 disposed on the rear side end of the loading robot. The positioning fixture 70 with the stylus 200 fixed thereon, which is transported by the previous device, is transported on the loading rail 81, and the loading robot is used to take and place the fastener 300 in the material tray onto the positioning column 71 of the positioning fixture 70, and the groove 301 of the fastener 300 faces upward. The industrial camera 821 of the feeding detection mechanism 82 detects and identifies whether the fastener 300 is mounted on the positioning column 71 and whether the groove 301 of the fastener 300 is facing upward, and feeds back the identification information to the control system. The barcode scanner 822 of the feeding detection mechanism 82 is used to scan the positioning fixture 70 and the stylus 200 accordingly, and sends information to the control system to match the two.

[0036] Combination Figure 4 and Figure 7 , the assembly device 20 can rotate the transferred fastener 300 by a certain angle, so that the inner wall of the fastener 300 is opposite to the nozzle of the spraying device 60, and the assembly device 20 can also drive the fastener 300 to rotate relative to the nozzle, so as to spray the catalyst on the inner wall circumferentially. Specifically, the assembly device 20 includes a clamp 21 and an assembly drive mechanism 22 connected to the clamp 21. The assembly drive mechanism 22 can drive the clamp 21 to move in a straight line to grab and transfer the fastener 300. The rotation driver 221 of the clamp drive mechanism 22 can drive the clamp 21 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 of the spraying device 60. At this time, the fastener 300 is turned from horizontal to vertical, which is convenient for the nozzle to spray the catalyst, and the sprayed catalyst is not easy to flow out during the return process. The clamping jaw 21 can also rotate 360° relative to the nozzle under the drive of the rotary driver 222 of the clamping jaw driving mechanism 22, so that the nozzle does not need to rotate, and the clamping jaw 21 only needs to drive the fastener 300 to rotate, so as to achieve the circumferential coating of the inner wall of the fastener 300. In addition, an optical fiber sensor 223 is also provided at the clamping jaw 21 for sensing whether the clamping jaw 21 holds the fastener 300.

[0037] See also Figures 8 to 10The screwing device 30 includes a twist joint 90, which is tubular and has a slot 91 on its wall. The tube mouth of the twist joint 90 has a plug-in structure 92 that matches the top of the fastener 300 in a concave-convex manner. Specifically, the number of the slots 91 is multiple, so that it is convenient to observe and confirm whether the fastener 300 is assembled in place through the slots 91. Preferably, when the number of the slots 91 is an odd number, the effect is better when it is identified by side lighting. The plug-in structure 92 includes a convex tooth 921 arranged in a one-to-one correspondence with the multiple grooves 301 at the top of the fastener 300 and a plug-in groove 922 formed between adjacent convex teeth 921. When plugging, the convex teeth 921 of the twist joint 90 are plugged in one-to-one with the multiple grooves 301 at the top of the fastener 300, and at the same time, the top part between two adjacent grooves 301 of the fastener 300 is plugged in with the plug-in groove 922, so that the fastener 300 can be driven to rotate. Specifically, the screwing device 30 also includes a screwing drive mechanism 31 and an industrial camera 32. The screwing drive mechanism 31 can drive the twisting head 90 connected thereto to move linearly and rotate. The industrial camera 32 is arranged beside the twisting head 90 to identify the position of the fastener 300 and send a signal to the control system for the screwing operation of the twisting head 90. A torque sensor 312 and a damper 313 are also arranged between the rotation driver 311 of the screwing drive mechanism 31 and the twisting head 90, so as to accurately control the knob action of the twisting head 90.

[0038] In order to improve the accuracy of the knob, the screwing device 30 also includes a positioning member 33 and a positioning drive mechanism 34 arranged beside the transmission guide rail 11. The positioning drive mechanism 34 can drive the positioning member 33 connected thereto to reciprocate linearly, so that the positioning member 33 can approach or move away from the positioning fixture 70, so that the pen holder 302 in the positioning fixture 70 can be clamped from the upper and lower ends of the positioning fixture 70, wherein the clamping portion 331 at the lower end can pass through the window 71 of the positioning fixture 70 (see Figure 2 ) and extends into the positioning fixture 70 to fix the pen holder 302 from the bottom side, and the clamping portion 331 at the upper end is at the top of the positioning fixture 70 to fix the pen holder 302 from the top side.

[0039] See also Fig.11 The glue dispensing needle 41 of the glue dispensing device 40 is arranged to be deflectable, so that the glue dispensing needle 41 can extend into the pen barrel 202 through the slot 2021 opened on the barrel wall of the pen barrel 202 to dispense thread glue on the pen core 201. Specifically, the glue dispensing device 40 also includes a glue dispensing drive mechanism 42 and a rotating mechanism 43 (see Figure 5), the glue dispensing drive mechanism 42 can drive the glue dispensing needle 41 connected thereto to move linearly and rotate, so that the glue dispensing needle 41 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 43 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 70, so that the positioning fixture 70 can be separated from the conveying of the conveying device 10. The rotating mechanism 43 then drives the positioning fixture 70 to rotate, and each rotation of 120° can drive the pen barrel 202 to rotate when the glue dispensing needle 41 is relatively motionless. The pen core 201 is glued at three slots 2021 equally spaced on the barrel wall of the pen barrel 202, so that the glue is distributed more evenly and the bonding is more firm. In addition, the glue dispensing device 40 also includes an automatic glue cleaning mechanism 44 for cleaning the residual glue at the glue dispensing needle 41.

[0040] See also Fig.12 and Fig.13 The adjustment device 50 includes a twist joint 90 disposed above the transmission device 10. The twist joint 90 can move linearly to be plugged into or separated from the fastener 300. The twist joint 90 can also rotate to drive the fastener 300 to rotate around the pen core 201 until it is screwed into the assembly position w1. The specific structure of the twist joint 90 has been described in the knob device 30 and will not be repeated again. In addition, the adjustment device 50 also includes a knob driving mechanism 51 for driving the twist joint 90 to move linearly and rotate. Its specific structure is the same as that of the screw driving mechanism 31, except that: after driving the twist joint 90 to move linearly until it is inserted into the pen barrel 202 and connected with the fastener 300, the knob driving mechanism 51 also drives the twist joint 90 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 twist joint 90 is rotated to adjust the assembly gap h between the fastener 300 and the pen barrel 202 until it is adjusted to the desired assembly position w1.

[0041] Specifically, the adjustment device 50 also includes a positioning member 52 and an industrial camera 53. The positioning member 52 is arranged on the side of the conveying device 10, and can make a linear motion close to or away from the positioning fixture 70 to clamp or loosen the pen holder 202. An industrial camera 53 is arranged above and beside the conveying device 10. The industrial camera 53 above is used to identify the position of the fastener 300, and the industrial camera 53 on the side is used to identify the assembly gap h between the fastener 300 and the pen holder 202. Among them, the adjustment device 50 also includes a positioning drive mechanism 54 connected to the positioning member 52. The positioning drive mechanism 54 can drive the positioning member 52 to move linearly, so that the positioning member 52 can approach the positioning fixture to clamp the pen holder 202 in the positioning fixture 70 from the upper and lower ends of the positioning fixture 200. The industrial camera 53 at the side can identify the assembly gap h between the fastener 300 and the pen barrel 202 through the slot 2021 on the barrel wall of the pen barrel 202 and the slot 91 on the tube wall of the twist joint 90 under the action of the reflector 55.

[0042] Combined with Figure 1 To Attachment Fig.13 The working principle of the assembly alignment device 100 of the present invention is described as follows:

[0043] After starting the equipment, under the instruction of the control system, the loading device 80 places the fastener 300 on the positioning fixture 70 circulated by the previous equipment (or manually loaded), and identifies whether the fastener 300 is installed and the placement direction of the fastener 300, and feeds back the identification information to the control system, and also scans the corresponding codes of the positioning fixture 70 and the stylus 200, and sends information to the control system to bind the two; then, the conveying device 10 conveys the positioning fixture 70 carrying the fastener 300 and the stylus 200 received at the loading device 10 alternately on the two conveying guide rails 11; then, at the assembly device 20, the assembly device 20 removes the fastener 300 from the positioning fixture 70 and transfers it to the spraying device 60, and rotates the fastener 300 90° to get close to the spraying device 60. During the process of the spraying device 60 spraying the catalyst, the assembly device 20 drives the fastener 300 to rotate 360° around the nozzle of the spraying device 60. °, thereby spraying the catalyst uniformly on the circumference of its inner wall; then, the assembly device 20 sets the sprayed fastener 300 on the pen core 201, and the positioning fixture 70 continues to transport; the knob device 30 then screws the fastener 300 on the pen core 201 into the pen barrel 202 until it reaches the pre-installed position; then, the glue dispensing device 40 deflects a certain angle, and cooperates with the rotating mechanism 43 to drive the positioning fixture 70 to rotate, each rotation is 120°, and the thread glue is applied to the pen core 201 at the three slots 2021 of the pen barrel 202; then, the positioning fixture is pulled to the adjustment device 50, and the adjustment device 50 first rotates the fastener 300 in the forward and reverse directions to fully mix the catalyst and the thread glue, and then, with the cooperation of the industrial camera 53, accurately adjusts the assembly gap h between the fastener 300 and the pen core 201 until it is adjusted to the assembly position that meets the requirements; finally, after the assembly is completed, the positioning fixture 70 is transported on the conveying guide rail 11 to discharge the material.

[0044] 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.

[0045] Compared with the prior art, the assembly alignment device 100 of the present invention includes a assembling device 20, a screwing device 30, a dispensing device 40 and an adjusting device 50 arranged in sequence along the conveying direction of the conveying device 10, and a spraying device 60 arranged beside the assembling device 20. The fastener 300 supported on the positioning fixture 70 and the stylus 200 fixed in the positioning fixture 70 are transported by the conveying device 10, wherein the assembling device 20 transfers the fastener 300 on the positioning fixture 70 to the spraying device 60. The device 60 is used to spray the catalyst on the inner wall of the fastener 300 in cooperation with the spraying device 60, and then the fastener 300 is mounted on the pen core 201, and then the fastener 300 is screwed to the pre-installed position in the pen barrel 202 by the screwing device 30. At this time, the glue dispensing device 40 dispenses thread glue on the outer thread of the pen core 201. When the adjustment device 50 screws the fastener 300, under the action of the catalyst and the thread glue, the fastener 300 adjusted to the assembly position is firmly bonded to the assembly position. The assembly alignment device 100 of the present invention can realize automated flow operation, with a simple structure. The assembly accuracy is effectively guaranteed by first aligning and placing, then screwing and pre-aligning to the final adjustment operation. In addition, the catalyst is sprayed first and then the thread glue is dispensed, the glue dispensing accuracy is high, and the coordination of the catalyst and the thread glue effectively improves the firmness of the bonding, while improving production efficiency, effectively ensuring product quality.

[0046] 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 assembly alignment device, suitable for assembling fasteners between a stylus refill and a pen barrel, characterized in that: The assembly alignment device includes a conveying device, a assembling device, a screwing device, a dispensing device and an adjusting 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 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 sleeve the sprayed fastener on the pen core; the screwing device is used to screw the fastener sleeved on the pen core so that it is screwed into the pen barrel and located at the pre-installed position; the glue dispensing device is used to dispense thread glue on the outer thread of the pen core at the pre-installed position; The adjusting device is used to screw the fastener at the pre-installed position so that the fastener is adjusted and bonded at the assembly position.

2. The assembly alignment device according to claim 1, characterized in that: The conveying device includes two conveying rails arranged side by side, a connecting device, a screwing device and a gluing device are sequentially mounted above the two conveying rails and can move back and forth between the two conveying rails. The two adjustment devices are arranged on the rear side of the gluing 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 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 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.

5. The assembly alignment device according to claim 1, characterized in that: The assembly device includes a clamp and an assembly drive mechanism connected to the clamp. The assembly drive mechanism can drive the clamp to move linearly to grab and transfer the fastener. The clamp drive mechanism can also drive the clamp to rotate 90° first, so that the fastener turns from horizontal to vertical, and then drive the clamp to rotate 360° relative to the nozzle of the spray device, so that the inner wall of the fastener is sprayed with catalyst circumferentially.

6. The assembly alignment device according to claim 1, characterized in that: The screwing device comprises a twist joint, which is tubular and has a slotted hole on its wall. The pipe opening of the twist joint has a plug-in structure which is concave-convexly matched with the top end of the fastener.

7. The assembly alignment device according to claim 1, characterized in that: The glue dispensing needle nozzle of the glue dispensing device is arranged to be swingable, so that the glue dispensing needle nozzle can extend into the pen barrel through a slot hole provided on the barrel wall of the pen barrel to dispense thread glue to the pen core.

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

9. The assembly alignment device according to claim 8, characterized in that: The adjustment device also includes a positioning piece and an industrial camera. The positioning piece is arranged on the side of the conveying device and can make a linear motion close to or away from the positioning fixture to clamp or loosen the pen holder. An industrial camera is arranged above and on the side of the conveying device. The industrial camera above is used to identify the position of the fastener, and the industrial camera on the side is used to identify the assembly gap between the fastener and the pen holder.

10. The assembly alignment device according to claim 1, characterized in that: The assembly alignment equipment further comprises a loading device, which is arranged at the front side of the assembly device and is used to place the fastener on the positioning column of the positioning fixture and detect whether the fastener is placed.

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