Stylus pen assembly line

Abstract

The present invention discloses a stylus pen assembly production line, comprising a first assembly machine, a first static curing machine, a first inspection machine, a second assembly machine, a second static curing machine and a second inspection machine, wherein the first assembly machine is used for screwing a fastener sprayed with a catalyst to a first assembly position of a pen core dotted with thread glue, and the second assembly machine is used for screwing another fastener sprayed with a catalyst to a second assembly position of a pen core that has been assembled with a fastener and has been dotted with thread glue; the first static curing machine and the second static curing machine are respectively used for static storage of the stylus pen after the two fasteners are assembled and for transmission after curing; the first inspection machine and the second inspection machine respectively inspect the assembly firmness, assembly accuracy and glue amount of the two fasteners; the stylus pen assembly production line of the present invention has high assembly and glue dot accuracy, and the combination of the catalyst and the thread glue accelerates the curing speed of the thread glue, thereby effectively improving the bonding firmness.

Description

Technical Field

[0001] The invention relates to an assembly device, and in particular to a stylus pen assembly production line. Background Art

[0002] For ease of use, electronic products such as mobile phones, tablet computers, and electronic dictionaries are often controlled with a stylus. The stylus is generally plugged into a mobile phone or other electronic product 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, making the stylus more sophisticated, thereby increasing the difficulty of manufacturing the stylus. A stylus pen generally includes a pen barrel and a refill inserted into the pen barrel. Since the stylus pen has a certain length, in order to prevent the refill from shaking relative to the pen barrel, in some stylus pens, after the refill is aligned and assembled in the pen barrel, a fastener is added between the two to strengthen the connection and positioning. However, 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 numerical range. It is not easy to align and fix the smaller fasteners between the pen barrel and the refill with glue. After assembly, it is necessary to wait for the glue to solidify, and then perform precision inspection on the assembly. The tooling requirements are high. When the number of fasteners is more than one, the assembly becomes more difficult. At present, the assembly and gluing of the fasteners between the pen barrel and the refill are generally carried out manually. The alignment and gluing are performed based on the proficiency and experience of the operator. The efficiency is low, and the accuracy of assembly and gluing cannot be guaranteed.

[0003] Therefore, there is an urgent need for a stylus pen assembly production line that can realize automated assembly line operation with high assembly accuracy and 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 object of the present invention is to provide a stylus pen assembly production line with high assembly accuracy, high efficiency and firm assembly.

[0005] In order to achieve the above-mentioned purpose, the present invention discloses a stylus pen assembly production line, which is used for assembling and testing a first fastener and a second fastener between a refill and a pen barrel of a stylus pen, and comprises a first assembling machine, a first static curing machine, a first testing machine, a second assembling machine, a second static curing machine and a second testing machine which are electrically connected to a control system and connected in sequence, wherein the first assembling machine is used for spraying a catalyst on the inner wall of the first fastener, applying thread glue to a first assembly position where the refill is located in the pen barrel, rotating the first fastener to a pre-installed position and then adjusting it to be bonded to the first assembly position, and conveying the stylus pen with the first fastener assembled thereon; the first static curing machine is used for static storage of the stylus pen with the first fastener assembled thereon and conveying the stylus pen with the glue cured after static storage; the first testing machine is used for The first assembly machine is used to detect the assembly firmness, assembly accuracy and glue amount of a fastener and to divert and transport the stylus pen after the detection; the second assembly machine is used to detect and identify whether the stylus pen transported by the first detection machine is equipped with the first fastener, and to apply thread glue to the second assembly position of the pen core to which the first fastener has been assembled, and then after spraying a catalyst on the inner wall of the second fastener, the second fastener is screwed to be bonded to the second assembly position, and the stylus pen to which the second fastener has been assembled is transported; the second static curing machine is used to statically store the stylus pen to which the second fastener has been assembled and to transport the stylus pen after the glue has been cured after static storage; the second detection machine is used to detect the assembly firmness, assembly accuracy and glue amount of the second fastener assembled between the pen core and the pen barrel of the stylus pen and to transport the stylus pen after the detection; the control system is used to control the coordinated actions between the various machines.

[0006] Compared with the prior art, the stylus pen assembly production line of the present invention sprays a catalyst and applies thread glue to the first assembly positions of the first fastener and the pen core respectively through a first assembly machine, and firstly rotates the first fastener to be assembled in the pen barrel to a pre-installed position, and then adjusts the position to be bonded to the first assembly position, thereby ensuring the precise assembly of the first fastener, and the second assembly machine only applies glue and sprays a catalyst to the pen core and the second fastener assembled with the first fastener through detection, thereby reducing invalid operations and effectively improving efficiency, and for the assembly of the second fastener assembled at the barrel mouth of the pen barrel, it only needs to be aligned and screwed to be bonded to the second assembly position, and the structure is simpler; in addition, online static curing is achieved through two static curing machines, and there is no need to transfer products, which effectively ensures the uninterrupted operation of the flow-drawing production line and improves the assembly efficiency, and the assembly firmness, assembly accuracy and glue amount of the first fastener and the second fastener are also detected by two detection machines to further ensure the assembly quality. The stylus pen assembly production line of the present invention can realize automated assembly line operation with high assembly and dispensing accuracy. The combination of the catalyst and the thread glue not only accelerates the curing speed of the thread glue and effectively improves the bonding strength, but also, to a certain extent, 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. While improving production efficiency, it effectively guarantees product quality.

[0007] Preferably, the stylus pen is circulated between machines through a positioning jig, and the positioning jig includes a detachably connected upper carrier and a lower carrier, and the bottom ends of the two have a first connecting hole that is connected, and the left and right opposite sides of the upper carrier are each provided with a second connecting hole, and the upper carrier is provided with a slot for the stylus pen to be connected, and the upper carrier is also provided with two positioning columns for the placement of the first fastener and the second fastener.

[0008] Preferably, the upper carrier and the lower carrier are both provided with identification codes, and the input ends of the first assembly machine, the first static curing machine, the first inspection machine, the second assembly machine, the second static curing machine and the second inspection machine are all provided with identification devices for identifying the identification codes.

[0009] Preferably, the first assembly machine, the first inspection machine, the second assembly machine and the second inspection machine are each provided with two conveying rails for conveying the positioning jig, and the first static curing machine and the second static curing machine are each provided with one of the conveying rails.

[0010] Preferably, a track changing mechanism is provided at each of the head and tail ends of the two conveying rails, and the track changing mechanism is used to push the positioning fixture conveyed on one conveying rail to the other conveying rail.

[0011] Preferably, the first assembly machine and the second assembly machine both include a twist joint, which is tubular and has a slotted hole on its wall, and the tube mouth of the twist joint has a plug-in structure that is concave-convexly matched with the top of the first fastener and the second fastener.

[0012] Preferably, a loading and unloading device is respectively provided at the front and rear ends of the first static curing machine, and the loading and unloading devices at the front and rear ends are respectively used for loading and unloading the gasket for preventing glue overflow on the stylus.

[0013] Preferably, the upper carrier and the lower carrier in the first static curing machine are separable, and only the upper carrier is arranged on the static platform of the first static curing machine.

[0014] Preferably, the first detection machine includes an assembly accuracy detection device, a torque detection device, a glue quantity detection device and a diverter device arranged in sequence, the torque detection device is used to screw the first fastener to detect whether the bonding of the first fastener is firm, the assembly accuracy detection device is used to identify the assembly gap between the bottom end surface of the first fastener and the reference surface of the pen core to determine whether the first fastener is assembled in place, the glue quantity detection device is used to irradiate the first fastener with UV light to detect whether the glue quantity meets the requirements, and the diverter device is used to divert and transfer the stylus pen whose first fastener is assembled unqualified.

[0015] Preferably, the torque detection device, the assembly accuracy detection device and the glue quantity detection device are each provided with a diversion device, and the conveying direction of the diversion device is perpendicular to the conveying direction of the conveying guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of two fasteners of the present invention being assembled between the pen core and the pen barrel of the touch pen.

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

[0018] Figure 3 The figure is an overall layout diagram of the stylus pen assembly production line of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the two conveying guide rails of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the track changing mechanism of the present invention.

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

[0022] Figure 7It is a schematic diagram of the planar structure of the first assembling machine of the present invention.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the twist joint of the present invention.

[0024] Fig. 9 It is a schematic plan view of the structure of the first static curing machine of the present invention.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of part of the first static curing machine of the present invention.

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the positioning mechanism of the first static curing machine of the present invention.

[0027] Fig.12 It is a schematic diagram of the three-dimensional structure of the first detection machine of the present invention.

[0028] Fig.13 It is a schematic diagram of the planar structure of the first detection machine of the present invention.

[0029] Fig.14 It is a schematic diagram of the planar structure of the second set of connection devices of the present invention. DETAILED DESCRIPTION

[0030] 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.

[0031] 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 needs to be assembled between the refill 201 and the pen barrel 202. The fastener includes but is not limited to a nut. Three slots 2021 are equally divided along the circumference of the barrel wall of the pen barrel 202. The assembly position of the fastener in the refill 201 can be observed from the three slots 2021. Specifically, in the preferred embodiment of the present application, a fastener 300a and a fastener 300b are assembled between the refill 201 of the stylus pen 200 and the pen barrel 202. The two have the same structure and have a plurality of grooves 301 arranged at intervals at the top. The number of the grooves 301 can be 4 and arranged symmetrically. The first fastener 300a is assembled at the relative lower end between the pen core 201 and the pen barrel 202, and the second fastener 300b is assembled at the relative upper end between the pen core 201 and the pen barrel 202. The first fastener 300a is completely assembled in the pen barrel 202. When it is assembled to the required assembly position w1, the assembly gap h1 between its bottom end surface and the reference surface of the pen core 201 needs to be controlled at about 2.5mm, with an error of plus or minus 0.01mm. The second fastener 300b is assembled at the barrel mouth of the pen barrel 202, with one end of it located in the pen barrel 202 and the other end located outside the pen barrel 202. When it is assembled to the required assembly position w2, the assembly distance h2 between its top end surface and the tip of the pen core 201 needs to be controlled at about 5.3mm, with an error of plus or minus 0.02mm.

[0032] See also Figure 3The present invention discloses a stylus pen assembly production line 100, which is suitable for the alignment assembly, static curing and detection of fasteners 300a and 300b between a refill 201 and a pen barrel 202 of a stylus pen 200. The stylus pen assembly production line 100 of the present invention includes a first assembly machine 10, a first static curing machine 20, a first detection machine 30, a second assembly machine 40, a second static curing machine 50 and a second detection machine 60 which are electrically connected to a control system and connected in sequence. The first assembly machine 10 is mainly used to spray catalyst on the inner wall of the first fastener 300a, and apply thread glue to the first assembly position w1 of the pen core 201 in the pen barrel 201, and also rotate the first fastener 300a to the pre-installed position and then adjust it to be bonded to the first assembly position w1, and transport the stylus 200 assembled with the first fastener 300a; the first static curing machine 20 is used to statically store the stylus 200 assembled with the first fastener 300a and transport the stylus 200 after the glue is cured after static storage; the first inspection machine 30 is used to inspect the assembly firmness, assembly accuracy and glue amount of the first fastener 300a assembled between the pen core 201 and the pen barrel 202 of the stylus 200, and to divert and transport the stylus 200 after inspection; the second assembly machine 40 is used to detect and identify whether the stylus 200 transported by the first inspection machine 30 is equipped with the first fastener 300a, and to The thread glue is applied to the second assembly position w2 of the pen core 201 assembled with the first fastener 300a, and after the catalyst is sprayed on the inner wall of the second fastener 200, the second fastener 300b is screwed to be bonded to the second assembly position w2, and the stylus pen 200 assembled with the second fastener 300b is transported; the second static curing machine 50 is used for static storage of the stylus pen 200 assembled with the second fastener 300b and for transporting the stylus pen 200 after the glue is cured after static storage; the second inspection machine 60 is used for inspecting the assembly firmness, assembly accuracy and glue amount of the second fastener 300b assembled between the pen core 201 and the pen barrel 202 of the stylus pen 200 and for transporting the stylus pen 200 after inspection; the control system is used for controlling the coordinated actions between the various machines, wherein 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] See also Figure 2In the stylus pen assembly production line 100 of the present invention, the stylus pen 200 is mainly transferred between the machines through the positioning fixture 70. The positioning fixture 70 includes a detachably connected upper carrier 71 and a lower carrier 72, and the bottom ends of the two have a first connecting hole (not shown in the figure) that is connected. The left and right opposite sides of the upper carrier 71 are each provided with a second connecting hole 711. The upper carrier 71 is provided with a card slot for the stylus pen 200 to be connected. The upper carrier 71 is also provided with two positioning columns 712 for the placement of the first fastener 300a and the second fastener 300b. The cover plate of the upper carrier 71 is also provided with an opening 713 to fix the pen holder 202 in the upper carrier 71 during subsequent assembly and testing.

[0034] See also Figure 4 , the upper carrier 71 and the lower carrier 72 are both provided with identification codes, and the input ends of the first assembly machine 10, the first static curing machine 20, the first inspection machine 30, the second assembly machine 40, the second static curing machine 50 and the second inspection machine 60 are all provided with an identification device 101 for identifying the two identification codes, so as to match the stylus 200 fixed in the upper carrier 71 with the lower carrier 72. The identification device 101 includes a barcode scanner 1011 and a sensor 1012. The barcode scanner 1011 is used to scan the upper carrier 71 and the lower carrier 72 correspondingly, and send information to the control system to match the two. The sensor 1012 is used to sense whether the positioning fixture 70 has moved into place. Among them, the identification code on the upper carrier 71 can be derived from the stylus pen 200 fixed thereon. When the stylus pen 200 is assembled on the upper carrier 71, it is torn off from the stylus pen 200 by a human or a robot and pasted on the upper carrier 71. It is mainly used to bind the stylus pen 200 to the upper carrier 71 for subsequent assembly, static placement and detection. For example, in the first static curing machine 20, in order to achieve online static placement to improve efficiency, the static platform 104 of the first static curing machine 20 needs to accommodate more styluses 200, so the upper carrier 71 and the lower tool 72 need to be separated, and only the upper carrier 71 with a relatively small volume carrying the stylus pen 200 is moved to the static platform 104 to be arranged. At this time, the upper carrier 71 and the lower tool 72 will have a re-matching problem due to the static time. Therefore, when entering the first detection machine 30, the newly assembled upper carrier 71 and the lower tool 72 need to be scanned and identified.

[0035] See also Figure 5In order to balance the production line and improve efficiency, the first assembly machine 10, the first inspection machine 30, the second assembly machine 40 and the second inspection machine 50 are each provided with two conveying rails 102 for conveying the positioning fixture 70, and the first static curing machine 20 and the second static curing machine 50 are provided with a conveying rail 102. Among them, one of the two conveying rails 102 is the main one and the other is the auxiliary one. The conveying rails 102 that play the main conveying role in each machine can be docked in sequence. In each machine, in order to balance the production line, the positioning fixture 70 will be transferred to another conveying rail 102 for corresponding operations, and after completion, the positioning fixture 70 needs to be moved back to the main conveying rail 102 so that it can be circulated between the machines. Then, a track changing mechanism 103 is provided at the head and tail ends of the two conveying rails 102, and the track changing mechanism 103 is used to push the positioning fixture 70 conveyed on one conveying rail 102 to another conveying rail 102.

[0036] The track-changing mechanism 103 includes a push plate 1031 disposed at the head and tail ends of the two conveying rails 102 and located below the two, a receiving rail 1032 disposed between the two conveying rails 102 and having a conveying direction perpendicular to the conveying directions of the two, and two push members 1033 disposed at the head end of one conveying rail 102 and the tail end of the other conveying rail 102. The push plate 1031 is used to push or receive the positioning fixture 70 so that the positioning fixture 70 can be separated from or fall back onto the conveying rail 102, and the push member 1033 is used to push the positioning fixture 70 that has separated from the conveying rail 102 so that it can flow to the other conveying rail 102 through the receiving rail 1032. The track-changing mechanism 103 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 rails 102, and avoids the problems of positioning and transfer when changing tracks by a robot.

[0037] See below Figures 6 to 14 , the specific structure and working principle of the stylus pen assembly production line 100 of the present invention are described according to the processing sequence:

[0038] See also Figure 6In a preferred embodiment of the present invention, in order to realize the supporting and placing of two fasteners by the positioning fixture 70, the stylus pen assembly production line 100 of the present invention further includes a loader 80, which is disposed at the front side of the first assembly machine 10, and is used to place the first fastener 300a and the second fastener 300b on the positioning column 712 of the positioning fixture 70 and detect whether the first fastener 300a and the second fastener 300b are placed. Specifically, the loader 80 includes a loading guide rail 81, a loading robot (not shown in the figure) disposed at the upper side end of the loading guide rail 81, and a loading detection mechanism 82 disposed at the rear side end of the loading robot. The positioning fixture 70 with the stylus pen 200 fixed thereon, which is transported by the previous device, is transported on the loading guide rail 81, and the loading guide rail 81 is connected to the main transport guide rail 102 in the first assembly machine 10 to transport the positioning fixture 70 to the first assembly machine 10. The loading robot is used to pick up and place the first fastener 300a and the second fastener 300b in the material tray on the two positioning posts 712 of the positioning fixture 70 in a one-to-one correspondence, and the grooves 301 of the first fastener 300a and the second fastener 300b are both facing upward. The industrial camera 821 of the loading detection mechanism 82 identifies whether the first fastener 300a and the second fastener 300b are mounted on the positioning post 712, and whether the grooves 301 of the first fastener 300a and the second fastener 300b are both facing upward, and feeds back the identification information to the control system. The barcode scanner 822 of the loading detection mechanism 82 is used to scan the upper carrier 71 and the lower carrier 72 correspondingly, and send information to the control system to match the two.

[0039] It should be noted that a manual operation position is reserved in the feeder 80, so the stylus pen 200 can also be manually fed at the feeder 80. Specifically, the operator can align the stylus pen 200 and clamp it in the upper carrier 71, then tear off the identification code on the stylus pen 200 and stick it on the upper carrier 71, and after the first fastener 300a and the second fastener 300b are sleeved on the positioning column 712, the positioning fixture 70 is placed on the feeding guide rail 81 for transmission. In addition, in order to realize the recycling of the positioning fixture 70, a return guide rail 105 that can be docked is also provided under each machine.

[0040] See also Figure 7The first assembly machine 10 includes a assembling device 12, a screwing device 13, a dispensing device 14 and an adjusting device 15 arranged in sequence along the conveying direction of the conveying device 11, and a spraying device 16 arranged beside the assembling device 12. The first fastener 300a and the second fastener 300b carried on the positioning fixture 70 and the stylus 200 fixed in the positioning fixture 70 are transported on the conveying guide rail 101 of the conveying device 11; the assembling device 12 travels back and forth between the conveying device 11 and the spraying device 16, firstly transfers the first fastener 300a on the positioning fixture 70 to the spraying device 16, and cooperates with the spraying device 16 to spray the catalyst on the inner wall of the first fastener 300a, and then the first fastener 300a after spraying is transferred to the spraying device 16. The fastener 300a is sleeved on the pen core 201; then, the screwing device 13 screws the first fastener 300a sleeved on the pen core 201 so that it is screwed into the pen barrel 202 and located at the pre-installed position; then, the glue dispensing device 14 dispenses thread glue on the outer thread of the pen core 201 at the pre-installed position; finally, the adjustment device 15 screws the first fastener 300a at the pre-installed position, and through the industrial camera, the first fastener 300a is adjusted and bonded at the assembly position w1.

[0041] See also Figure 8 The screwing device 13 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 first fastener 300a 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 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 first fastener 300a 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 first fastener 300a. At the same time, the top part between two adjacent grooves 301 of the first fastener 300a is plugged in with the plug-in groove 922, so that the fastener 300 can be driven to rotate. Likewise, the second set of joints also includes a twist joint 90, and the twist joint 90 and the end of the second fastener 300b can also be plug-fitted.

[0042] See also Fig. 9After the first fastener 300a is assembled between the pen core 201 and the pen barrel 202, the stylus pen 200 is conveyed to the first static curing machine 20 driven by the positioning jig 70. The first static curing machine 20 includes a loading and unloading device 22, a loading device 23, a static device 24, a unloading device 25 and a loading and unloading device 26 arranged in sequence along the conveying direction of the conveying device 21. The positioning jig 70 is conveyed on the conveying guide rail 102 of the conveying device 21. The loading and unloading device 22 first assembles the gasket for anti-overflow glue on the stylus pen 200. The conveying device 21 then cooperates with the loading device 23 to separate the upper carrier 71 of the positioning jig 70 from the lower carrier 72. After the upper carrier 71 loaded with the stylus pen 200 is rotated to a certain angle, the loading device 23 transfers it to the static platform 104 of the static device 24. The rotated upper carrier 71 is closely arranged in the stationary device 104 at an angle convenient for arrangement. The stationary device 24 can also transfer the placed upper carrier 71 to the direction of the unloading device 25 in the order of placement, so as to realize first-in-first-out. The conveying device 21 cooperates with the unloading device 25 to reversely rotate the upper carrier 71 taken out by the stationary device 24 to a certain angle and then install it back on the lower carrier 72. The positioning fixture 70 then carries the solidified stylus 200 and continues to be conveyed to the disassembly device 26. The disassembly device 26 removes the gasket from the stylus 200 so that the gasket can be recycled and reused. The solidified stylus 200 continues to be conveyed to the direction of the first inspection machine 30 by the conveying device 21.

[0043] See also Fig.10 and Fig.11 Specifically, a positioning mechanism 27 is provided at each of the loading device 23 and the unloading device 25. The positioning mechanism 27 includes a push plate 271, a rotating member 272 and a limit plate 273. The push plate 271 is provided at the lower side of the conveying guide rail 102 and is located between the two conveying belts 1021 of the conveying guide rail 102. The push plate 271 can move linearly up and down relative to the conveying guide rail 102 under the drive of the push driver 274 connected thereto, so as to push the positioning carrier 70 to make it separate from the conveying guide rail 102. The limit plate 273 is provided at the edge of the conveying guide rail 102 in a direction that blocks the upper carrier 72 from moving upward, thereby realizing the separation of the upper carrier 72 from the upper carrier 71. The rotating member 272 is convexly provided on the push plate 271 and can move up and down with the push plate 271, and can be plugged into the first plug hole at the bottom end of the positioning fixture 70. The rotating member 272 can also be connected to the rotating driver 275 The lower relative push plate 271 is driven to rotate, thereby driving the upper carrier 71 that has separated from the upper carrier 72 to rotate a certain angle, so that the second plug-in hole 2011 at the side end of the upper carrier 71 is in a position convenient for the loading device 23 to pick up and deliver, and the upper carrier 71 at this angle is more convenient to be closely arranged in the stationary platform 104 of the stationary device 24.

[0044] See also Fig.12 and Fig.13 The first inspection machine 30 includes an assembly accuracy inspection device 32, a torque inspection device 33, a glue quantity inspection device 34 and a diverter device 35 which are sequentially arranged along the conveying direction of the conveying device 31. The torque inspection device 33 firstly screws the first fastener 300a on the pen core 201 to detect whether the first fastener 300a is firmly bonded, and then the assembly accuracy inspection device 32 identifies the assembly gap h1 between the bottom end surface of the first fastener 300a and the reference surface of the pen core 201 to determine whether the first fastener 300a is assembled in place, and the glue quantity inspection device 34 irradiates the first fastener 300a with UV light to detect whether the glue quantity meets the requirements, and the diverter device 35 diverts and transfers the stylus 200 that fails to be assembled after the first fastener 300a is inspected. Among them, a diverter device 35 can be installed at the output station of the machine, and a diverter device 35 can also be installed next to the torque detection device 33, the assembly accuracy detection device 32, and the glue quantity detection device 34. The conveying direction of the diverter device 35 is perpendicular to the conveying direction of the conveying device 31.

[0045] See also Fig.14 The second assembly machine 40 includes a dispensing device 42 , an assembly device 43 and a screwing device 44 arranged in sequence along the conveying direction of the conveying device 41 , and a spraying device 45 arranged beside the assembly device 43 . The conveying device 41 conveys the second fastener 300b still supported on the positioning column 712 and the stylus 200 fixed in the positioning fixture 70 on the conveying guide rail 102. The glue dispensing device 41 first dispenses thread glue on the outer thread of the pen core 201 located at the barrel mouth of the pen barrel 202. The assembly device 43 then cooperates with the spraying device 45. After the spraying device 45 sprays a catalyst on the inner wall of the second fastener 300b, the sprayed second fastener 300b is mounted on the pen core 201 after the glue is dispensed. Finally, the screwing device 44 screws the second fastener 300b mounted on the pen core 201, so that the second fastener 300b is adjusted and bonded at the assembly position w2. One end of the second fastener 300b at the assembly position w2 is screwed into the pen barrel 202, and the other end is located outside the pen barrel 202. Since the assembly position of the second fastener 300 b on the pen core 201 is relatively easy, the second assembly machine 40 does not need to be pre-aligned, and the knob assembly can be realized quickly and easily.

[0046] Afterwards, after the second fastener 300b is assembled on the refill 201, the stylus pen 200 flows out of the second assembly machine 40 and is sequentially transferred to the second static curing machine 50 and the second inspection machine 60. The second static curing machine 50 is substantially the same in structure and working principle as the first static curing machine 20. The only difference is that the setting of the static platform 104 is different due to the different time required for static curing. Similarly, the second inspection machine 60 is also the same in structure and working principle as the first inspection machine 30. The only difference is that what needs to be identified is the assembly distance h2 between the top surface of the second fastener 300b and the tip of the refill 201, and both are identified by industrial cameras. Therefore, the structures of the second static curing machine 50 and the second inspection machine 60 are not described in detail.

[0047] Compared with the prior art, the stylus pen assembly production line 100 of the present invention sprays a catalyst and applies thread glue to the first assembly position w1 of the first fastener 300a and the pen core 201 respectively through the first assembly machine 10, and firstly rotates the first fastener 300a to be assembled in the pen barrel 202 to the pre-installed position, and then adjusts the position to be bonded to the first assembly position w1, thereby ensuring the accurate assembly of the first fastener 300a, and the second assembly machine 40 only applies glue and sprays a catalyst to the pen core 201 and the second fastener 300b assembled with the first fastener 300a through detection, thereby reducing invalid operations and effectively improving efficiency. In addition, online static curing is realized through the first static curing machine 20 and the second static curing machine 50, and there is no need to transfer products, which effectively ensures the uninterrupted operation of the flow drawing production line and improves the assembly efficiency. In addition, the first inspection machine 30 and the second inspection machine 60 are used to detect the assembly firmness, assembly accuracy and glue amount of the first fastener 300a and the second fastener 300b, thereby further ensuring the assembly accuracy. The stylus pen assembly production line 100 of the present invention can realize automated assembly line operation with high assembly and dispensing accuracy. The combination of the catalyst and the thread glue not only accelerates the curing speed of the thread glue and effectively improves the bonding strength, but also, to a certain extent, avoids 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.

[0048] 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. A stylus pen assembly production line, used for assembling a first fastener and a second fastener between a stylus pen core and a pen barrel, characterized in that: The stylus pen assembly production line includes: A first assembly machine is used to spray a catalyst on the inner wall of the first fastener, apply thread glue to the first assembly position of the pen core in the pen barrel, rotate the first fastener to a pre-installed position and then adjust it to be bonded to the first assembly position, and transport the stylus pen with the first fastener assembled; A first static curing machine, used for statically storing the stylus pen assembled with the first fastener and for conveying the stylus pen after the glue has been cured; A first inspection machine, used for inspecting the assembly firmness, assembly accuracy and glue quantity of a first fastener assembled between the pen core and the pen barrel of the stylus pen and for diverting and transmitting the stylus pen after inspection; a second assembly machine, for detecting and identifying whether the stylus pen transmitted by the first detection machine is equipped with the first fastener, applying thread glue to the second assembly position of the pen core to which the first fastener has been assembled, spraying a catalyst on the inner wall of the second fastener, screwing the second fastener to be bonded to the second assembly position, and transmitting the stylus pen to which the second fastener has been assembled; A second static curing machine, used for statically storing the stylus pen assembled with the second fastener and for conveying the stylus pen after the glue has been cured; A second inspection machine is used to inspect the assembly firmness, assembly accuracy and glue quantity of the second fastener assembled between the pen core and the pen barrel of the stylus pen and to convey the stylus pen after inspection to the next material; as well as A control system is electrically connected to the first assembly machine, the first static curing machine, the first detection machine, the second assembly machine, the second static curing machine and the second detection machine, and is used to control the coordinated actions among the machines.

2. The stylus pen assembly production line according to claim 1, wherein: The stylus pen circulates between machines through a positioning jig, and the positioning jig includes a detachably connected upper carrier and a lower carrier, and the bottom ends of the two have a first connecting hole that is connected, and the left and right opposite sides of the upper carrier are each provided with a second connecting hole. The upper carrier is provided with a slot for the stylus pen to be connected, and the upper carrier is also provided with two positioning columns for the placement of the first fastener and the second fastener.

3. The stylus pen assembly production line according to claim 2, wherein: The upper carrier and the lower carrier are both provided with identification codes, and the input ends of the first assembly machine, the first static curing machine, the first inspection machine, the second assembly machine, the second static curing machine and the second inspection machine are all provided with identification devices for identifying the two identification codes.

4. The stylus pen assembly production line according to claim 2, wherein: The first assembly machine, the first inspection machine, the second assembly machine and the second inspection machine are all provided with two conveying guide rails for conveying the positioning jig, and the first static curing machine and the second static curing machine are each provided with one of the conveying guide rails.

5. The stylus pen assembly production line according to claim 4, wherein: A track changing mechanism is respectively provided at the head and tail ends of the two conveying guide rails, and the track changing mechanism is used to push the positioning fixture conveyed on one conveying guide rail to the other conveying guide rail.

6. The stylus pen assembly production line according to claim 2, wherein: The first assembly machine and the second assembly machine both include a twist joint, which is tubular and has a slotted hole on its wall. The pipe mouth of the twist joint has a plug-in structure that is concave-convexly matched with the top of the first fastener and the second fastener.

7. The stylus pen assembly production line according to claim 2, wherein: The front and rear ends of the first static curing machine are respectively provided with a loading and unloading device, and the loading and unloading devices at the front and rear ends are respectively used for loading and unloading the gasket for preventing glue overflow on the stylus.

8. The stylus pen assembly production line according to claim 2, wherein: The upper carrier and the lower carrier in the first static curing machine are separable, and only the upper carrier is arranged on the static platform of the first static curing machine.

9. The stylus pen assembly production line according to claim 4, wherein: The first detection machine includes an assembly accuracy detection device, a torque detection device, a glue quantity detection device and a diversion device arranged in sequence. The torque detection device is used to screw the first fastener to detect whether the bonding of the first fastener is firm. The assembly accuracy detection device is used to identify the assembly gap between the bottom end surface of the first fastener and the reference surface of the pen core to determine whether the first fastener is assembled in place. The glue quantity detection device is used to irradiate the first fastener with UV light to detect whether the glue quantity meets the requirements. The diversion device is used to divert and transfer the stylus pen whose first fastener is assembled unqualified.

10. The stylus pen assembly production line according to claim 9, wherein: The torque detection device, the assembly accuracy detection device and the glue quantity detection device are each provided with a diversion device, and the conveying direction of the diversion device is perpendicular to the conveying direction of the conveying guide rail.

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