Automatic assembling equipment and assembling method for pen body tube assembly of injection pen

Abstract

The automatic assembling equipment comprises a working platform, a main rotation line is arranged on the working platform, and a piston assembling station, a positioner assembling station, a screw assembling station and a spring assembling station are sequentially arranged on one side of the main rotation line in the conveying direction. A fixing seat assembling station, a pen barrel assembling station and a detecting and transferring station are sequentially arranged on the other side of the main rotary line in the conveying direction, and a rotary disc mechanism is arranged outside the end, located at the spring assembling station and the fixing seat assembling station, of the main rotary line; the rotating disc mechanism comprises a linkage gear assembling station, a transmission rod assembling station, a preassembling and transferring station and a vacancy detecting station which are sequentially arranged in the rotating direction. The preassembling and transferring station preassembles linkage gears and transmission rods and transfers the linkage gears and the transmission rods to the main rotating line. The device further comprises a discharging robot located behind the detecting and transferring station. Therefore, full-automatic assembling of the pen barrel assembly is achieved, the assembling efficiency is greatly improved, and the assembling effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of injection pen assembly equipment, in particular to an automatic assembly device for a body tube component of an injection pen and an assembly method thereof. Background Art

[0002] Pen-type injectors, also known as injection pens, are products that combine drugs and syringes into one. They are shaped like a fountain pen and are suitable for self-management of various chronic diseases, including insulin for diabetes, growth hormone, osteoporosis drugs, multiple sclerosis drugs, anemia drugs, and rheumatoid arthritis. With the promotion and use of full automation, in order to improve the assembly efficiency and ensure the stability of the injection pen, it is necessary to introduce a fully automated production line for the injection pen.

[0003] The assembly of the pen tube assembly is an important part of the automated assembly of the injection pen. In the automated assembly of the pen tube assembly, since the pen tube assembly contains many parts, it is necessary not only to coordinate the assembly time between the various workstations, but also to consider the order of assembly of the parts. In the prior art, there is no efficient automated equipment to achieve fast and automated installation of the pen tube assembly. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a structurally reasonable automatic assembly device for a pen barrel assembly of an injection pen and an assembly method thereof, thereby realizing fully automated assembly of the pen barrel assembly, greatly improving assembly efficiency and ensuring assembly effect.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A kind of automatic assembly equipment of the pen body tube component of an injection pen, the pen body tube component includes a piston, a positioner, a screw, a spring, a linkage gear, a transmission rod, a fixed seat, and a pen body tube. The automatic assembly equipment includes a working platform, on which a main rotating line is arranged, and a piston assembly station, a positioner assembly station, a screw assembly station, and a spring assembly station are arranged in sequence on one side of the main rotating line along the conveying direction, and a fixed seat assembly station, a pen body tube assembly station, and a detection and transfer station are arranged in sequence on the other side of the main rotating line along the conveying direction. A turntable mechanism is arranged outside the end of the main rotating line located at the spring assembly station and the fixed seat assembly station; the turntable mechanism includes a linkage gear assembly station, a transmission rod assembly station, a pre-installation transfer station, and a vacancy detection station arranged in sequence along the rotation direction, and the pre-installation transfer station pre-assembles the linkage gear and the transmission rod and transfers them to the main rotating line; and also includes a material unloading robot located behind the detection and transfer station.

[0007] As a further improvement of the above technical solution:

[0008] The accompanying jigs are arranged and transported at intervals on the main rotating line, and a single accompanying jig includes multiple accommodating positions. Both sides of a single accommodating position are provided with clamping members that passively move toward or away from each other; the clamping members clamp or loosen the screw during the assembly process.

[0009] The arrangement form and number of the clamping actuators in the positioner assembly station, screw assembly station, spring assembly station, fixed seat assembly station, pen body assembly station and turntable mechanism are consistent with the arrangement form and number of the accommodating positions on the accompanying fixture, and the parallel clamping actuators in the same station act independently.

[0010] The clamping actuator is a clamping cylinder, which is installed on a lower support. The lower support and the upper support are slidably installed on a vertical track with an upper and lower interval. An elastic component is installed between the upper support and the lower support, and the upper support is installed below the linear drive power.

[0011] The piston assembly station, the positioner assembly station, the screw assembly station, the spring assembly station, the fixed seat assembly station, the pen body assembly station, the linkage gear assembly station, and the transmission rod assembly station all use vibration plates to sort and feed materials, and the vibration plates are arranged in order along the main rotation line; the piston assembly station uses a suction cup adsorption clamping form to transfer the piston from the output end of the vibration plate to the accompanying fixture; the positioner assembly station, the screw assembly station, the spring assembly station, the fixed seat assembly station, the pen body assembly station, the linkage gear assembly station, and the transmission rod assembly station all use a clamping cylinder clamping form to take materials from the vibration plate.

[0012] The screw assembly station includes a screw transfer mechanism 1 and a screw transfer mechanism 2 which are arranged at intervals and move along the transfer direction respectively, and a visual inspection component 1 and a flipping mechanism are arranged below the screw transfer mechanism 1 and the screw transfer mechanism 2 in sequence; the screw transfer mechanism 1 includes a vertical driving power 3, and an end adjustment motor is installed at the downward output end of the vertical driving power 3, and the downward output end of the end adjustment motor clamps the axially horizontally arranged screw through a clamping cylinder; the flipping mechanism flips the screw from a horizontal state to a vertical state; the screw transfer mechanism 2 includes a press-fitting driving power, and a rotary motor is installed at the downward output end of the press-fitting driving power, and the downward output end of the rotary motor clamps the screw through a clamping cylinder; and it also includes a fixture opening and closing power.

[0013] The pen body tube assembly station includes a material end adjustment mechanism connected to the discharge end of the vibration plate, and a self-rotation mechanism is installed directly below the lower material barrel at the bottom of the material end adjustment mechanism; it also includes a pen body tube transferring mechanism 1 and a pen body tube transferring mechanism 2, which move along the transfer direction and are arranged at intervals, and a positioning mechanism is arranged below the pen body tube transferring mechanism 1; the pen body tube transferring mechanism 2 transfers the pen body tube to the main rotating line from the positioning mechanism and presses it down for assembly.

[0014] A material unloading turntable line is arranged between the inspection and transfer station and the unloading robot. The inspection and transfer station transfers the assembled pen body tube components to each rotary seat of the unloading turntable line. A stop mechanism is arranged on the unloading turntable at the unloading robot. A tray unloading conveyor line is arranged at the unloading robot. A preset number of rotary seats are blocked by the stop mechanism and arranged closely. The unloading robot transports a preset number of pen body tube components on the rotary seats to the tray at a time.

[0015] A cleaning station, an inspection station, and a manual operation station are arranged on the main rotary line behind the inspection and transfer station; the inspection and transfer station is also connected to the NG conveyor line, and the NG conveyor line is arranged parallel to the main rotary line.

[0016] An assembly method of the automatic assembly device for the injection pen barrel assembly comprises the following steps:

[0017] The piston assembly station loads the piston onto the accompanying jig of the main rotary line, and the positioner assembly station loads the positioner into the accompanying jig. The piston and the positioner are respectively positioned in the accommodation positions of the accompanying jig; the screw assembly station loads the screw into the accompanying jig, rotates the screw to assemble with the thread of the positioner below, and applies downward pressure on the screw to cause the positioner to buckle downward onto the piston; the spring assembly station loads the spring into the accompanying jig, and the spring is accommodated in the preset position of the positioner;

[0018] The linkage gear assembly station and the transmission rod assembly station in the turntable mechanism respectively load the linkage gear and the transmission rod onto the turntable, and the pre-installation transfer station applies force downward to the transmission rod so that the bottom end of the transmission rod is pre-installed with the linkage gear; the pre-installation transfer station transfers the pre-installed components to the accompanying fixture of the main rotary line;

[0019] The fixed seat assembly station loads the fixed seat onto the accompanying fixture, lowers the fixed seat while guiding the screw, and applies downward force to the fixed seat so that the fixed seat is buckled downward on the positioner;

[0020] The pen body assembly station loads the pen body onto the accompanying fixture, and the pen body is lowered to complete the assembly;

[0021] The inspection and transfer station is combined with the unloading robot to load the pen body tube assembly onto the tray and unload it.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention sequentially arranges a piston assembly station, a positioner assembly station, a screw assembly station, a spring assembly station, a turntable mechanism, a fixed seat assembly station, and a pen body assembly station along the main rotary line, and pre-installs a linkage gear and a transmission rod at the turntable mechanism and then transfers and installs them together to an accompanying fixture of the main rotary line, thereby reasonably arranging the assembly sequence of the pen body assembly in combination with automated equipment, realizing fully automated assembly of the pen body assembly, effectively coordinating and matching the assembly time of each station, greatly improving assembly efficiency, and ensuring assembly effect;

[0024] The present invention also includes the following advantages:

[0025] By setting a clamping part that moves passively toward or away from each other on the accompanying fixture of the main rotary line, the screw can be clamped or loosened in time during the assembly process, effectively preventing the screw from shaking or rotating unnecessary, and effectively ensuring the smooth assembly.

[0026] By arranging multiple accommodating positions on the accompanying fixture and arranging a corresponding number of clamping actuators at each workstation, it is possible to perform multiple assembly operations of the same part at the same time; by setting the parallel clamping actuators in the same workstation to independent action mode, it is possible to control whether the clamping actuator is working according to the current actual situation, especially when NG or other situations occur during the assembly process, the corresponding clamping actuators in each workstation may not work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the layout of the automatic assembly equipment of the present invention.

[0028] Figure 2 It is a schematic structural diagram of the automatic assembly equipment of the present invention.

[0029] Figure 3 It is a cross-sectional view of the pen body tube assembly of the present invention.

[0030] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0031] Figure 5 It is a structural schematic diagram of the portable fixture of the present invention.

[0032] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0033] Figure 7 It is a structural schematic diagram of the piston assembly station of the present invention (vibration plate loading is omitted).

[0034] Figure 8 It is a schematic diagram of the structure of the positioner assembly station of the present invention (vibration plate loading is omitted).

[0035] Fig. 9 It is a schematic diagram of the structure of the screw assembly station of the present invention (vibration plate feeding is omitted).

[0036] Fig.10 It is a schematic diagram of the structure of the spring assembly station of the present invention (vibration plate feeding is omitted).

[0037] Fig.11 It is a structural schematic diagram of the turntable mechanism of the present invention.

[0038] Fig.12 for Fig.11 A partial enlarged view of point C in the middle.

[0039] Fig.13 The figure is a schematic diagram of the installation of the jig seat and the guide rod on the turntable of the present invention.

[0040] Fig.14 This is a schematic diagram of the use status of the pre-loading and transferring station of the present invention.

[0041] Fig.15 It is a schematic diagram of the structure of the fixing seat assembly station of the present invention (vibrating plate feeding is omitted).

[0042] Fig.16 It is a schematic structural diagram of the guide seat and the clamping cylinder in the fixing seat assembly station of the present invention.

[0043] Fig.17 It is a structural schematic diagram of the pen body assembly station of the present invention.

[0044] Fig.18 It is a structural schematic diagram of the material end adjustment mechanism of the present invention.

[0045] Fig.19 It is a schematic diagram of the installation of the support seat and the material distribution mechanism in the material end adjustment mechanism of the present invention.

[0046] Fig. 20 It is a structural schematic diagram of the upper and lower pressing mechanisms in the material end adjustment mechanism of the present invention.

[0047] Fig.21 This is a schematic diagram of the layout of the detection transfer station and the unloading turn line of the present invention. DETAILED DESCRIPTION

[0048] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0049] like Figure 3 and Figure 4 As shown, the pen body assembly includes a piston 100, a positioner 200, a screw 300, a spring 400, a linkage gear 500, a transmission rod 600, a fixing seat 700, and a pen body 800. Figure 1 and Figure 2As shown, an automatic assembly device for the pen body tube assembly of an injection pen in this embodiment includes a work platform, on which a main rotating line 14 is arranged, and a piston assembly station 1, a positioner assembly station 2, a screw assembly station 3, and a spring assembly station 4 are arranged in sequence on one side of the main rotating line 14 along the conveying direction, and a fixed seat assembly station 6, a pen body tube assembly station 7, and a detection and transfer station 8 are arranged in sequence on the other side of the main rotating line 14 along the conveying direction. A turntable mechanism 5 is arranged on the outside of the end of the main rotating line 14 located at the spring assembly station 4 and the fixed seat assembly station 6; the turntable mechanism 5 includes a linkage gear assembly station 501, a transmission rod assembly station 502, a pre-installation transfer station 503, and an empty position detection station arranged in sequence along the rotation direction, and the pre-installation transfer station 503 pre-assembles the linkage gear 500 and the transmission rod 600 and transfers them to the main rotating line 14; and also includes a unloading robot 11 located behind the detection and transfer station 8.

[0050] In this embodiment, the piston assembly station 1, the positioner assembly station 2, the screw assembly station 3, the spring assembly station 4, the turntable mechanism 5, the fixed seat assembly station 6, and the pen body assembly station 7 are arranged in sequence along the main rotating line 14, and the linkage gear 500 and the transmission rod 600 are pre-installed at the turntable mechanism 5 and then transferred and installed together to the accompanying fixture 15 of the main rotating line 14, so that the assembly sequence of the pen body assembly is reasonably arranged in combination with the automated equipment, and the fully automated assembly of the pen body assembly is realized.

[0051] The accompanying jigs 15 are arranged and transported at intervals on the main rotary line 14. Each accompanying jig 15 includes multiple accommodating positions. Both sides of each accommodating position are provided with clamping members 151 that passively move toward or away from each other; the clamping members 151 clamp or release the screw 300 during the assembly process.

[0052] In this embodiment, by providing a clamping member 151 that passively moves toward or away from the main rotating line 14 accompanying fixture 15, the screw 300 can be clamped or released in time during the assembly process, effectively preventing the screw 300 from shaking or rotating unnecessarily, thereby effectively ensuring the smooth assembly.

[0053] like Figure 5 and Figure 6As shown, driving plates 152 are symmetrically arranged on both sides of a single accommodating position of the accompanying fixture 15, and two parallel planes are arranged on the opposite sides of the driving plates 152 along the moving direction, and the two planes are connected via an inclined plane; a roller tangent to the inner side of the driving plate 152 is installed on the clamping member 151, and end plates 153 are installed at both ends of the paired driving plates 152; an external force (such as the fixture opening and closing power 150) is applied to one of the two end plates 153, driving the driving plate 152 to move, and one of the planes on the side of the driving plate 152 is in contact with the roller, driving the two rollers between the paired driving plates 152 to move toward each other or away from each other under the action of the elastic member, thereby realizing the toward or away movement of the clamping member 151, and realizing clamping or release.

[0054] The bottom surface of the accommodation position below the clamping member 151 is configured in the same shape as the piston 100 and the positioner 200. When the piston 100 and the positioner 200 are placed in the accommodation position, the configuration plays a role in positioning.

[0055] The arrangement form and number of the clamping actuators in the positioner assembly station 2, the screw assembly station 3, the spring assembly station 4, the fixing seat assembly station 6, the pen body assembly station 7 and the turntable mechanism 5 are consistent with the arrangement form and number of the accommodating positions on the accompanying fixture 15, and the clamping actuators arranged in parallel in the same station act independently.

[0056] In this embodiment, by arranging multiple accommodating positions on the accompanying fixture 15 and arranging a corresponding number of clamping actuators at each workstation, multiple assembly operations of the same parts can be performed simultaneously at the same time; by setting the parallel clamping actuators in the same workstation to independent action mode, the operation of the clamping actuator can be controlled according to the current actual situation, especially when NG or other situations occur during the assembly process, the corresponding clamping actuators in each workstation may not work.

[0057] In this embodiment, five accommodating positions are arranged in the same row on the accompanying fixture 15, corresponding to the arrangement of the clamping actuators on each workstation, and five pen body tube assemblies are assembled simultaneously.

[0058] The clamping actuator is a clamping cylinder, which is installed on a lower support. The lower support and the upper support are slidably installed on a vertical track with an upper and lower interval. An elastic component is installed between the upper support and the lower support, and the upper support is installed below the linear driving power. Therefore, under the operation of the linear driving power, the lower support is acted on after passing through the upper support and the elastic component, so that the lower support has a certain elastic buffer, which effectively avoids hard contact of the clamping actuator.

[0059] In this embodiment, the clamping actuator may also be an adsorption structure, such as the suction nozzle 107 in the piston assembly station 1, which clamps and transfers the material through the adsorption structure. The suction nozzle 107 in the piston assembly station 1 is also elastically buffered by an elastic component.

[0060] In one embodiment, the elastic component may be: comprising a vertical pole whose bottom end is fixedly mounted on a lower support, the vertical pole passing upward through an upper support, an elastic body being mounted on the vertical pole located between the upper support and the lower support; an anti-detachment limit block is arranged at the top of the vertical pole, the limit block prevents the vertical pole from detaching from the upper support.

[0061] The piston assembly station 1, the positioner assembly station 2, the screw assembly station 3, the spring assembly station 4, the fixed seat assembly station 6, the pen body assembly station 7, the linkage gear assembly station 501, and the transmission rod assembly station 502 all use vibration plates to sort and feed materials, and the vibration plates are arranged in an orderly manner along the main rotary line 14; thereby achieving an overall orderly, compact and reasonable layout of the automatic assembly equipment, which is particularly convenient for actual production use.

[0062] The piston assembly station 1 adopts a suction cup adsorption clamping form to transfer the piston 100 from the output end of the vibration disk to the accompanying fixture 15; the positioner assembly station 2, the screw assembly station 3, the spring assembly station 4, the fixed seat assembly station 6, the pen body assembly station 7 and the linkage gear assembly station 501 and the transmission rod assembly station 502 all adopt a clamping cylinder clamping form to take materials from the vibration disk.

[0063] like Figure 7 As shown, the structure of the piston assembly station 1 is: it includes an external linear module extending from the vibration plate to the main rotation line 14, a lifting plate 103 is installed on the side of the translation seat 101 on the external linear module through a lifting driving power 102, a plurality of vertical rails are installed in an orderly manner at intervals on the side of the lifting plate 103, an upper support 104, an elastic component 105, and a lower support 106 are installed in sequence from top to bottom along the vertical rails, and a suction nozzle 107 with a suction port facing downward is installed on the lower support 106.

[0064] When in use, the external linear module works to drive the suction nozzle 107 to move to the discharge port of the vibration plate. Combined with the operation of the lifting drive power 102, the suction nozzle 107 absorbs the piston 100, and then transfers and places it in the corresponding accommodation position of the accompanying fixture 15 of the main rotary line 14.

[0065] like Figure 8As shown, the structure of the positioner assembly station 2 is as follows: it includes a linear module extending from the vibration disk to the main rotation line 14, a lifting plate 23 is installed on the side of the translation seat 21 on the linear module through the lifting drive power 22, and a plurality of vertical rails are installed in an orderly manner at intervals on the side of the lifting plate 23, and an upper support 25, an elastic component 26, and a lower support 27 are installed from top to bottom along the vertical rail, the upper support 25 is connected to the downward output end of the vertical drive power 24, and a clamping cylinder is installed on the bottom surface of the lower support 27, and the clamping cylinder clamps the positioner 200 from the vibration disk and places it on the accompanying fixture 15; a limit block 28 is installed on the side of the clamping cylinder body, and the bottom end of the limit block 28 abuts against the top surface of the positioner 200, and the limit block 28 is used to limit the height when the clamping cylinder clamps the positioner 200.

[0066] When in use, the linear module works, driving the clamping cylinder to move to the discharge port of the vibration plate. Combined with the operation of the lifting drive power 22, the clamping cylinder clamps the positioner 200, and then transfers and places it in the corresponding accommodation position of the accompanying fixture 15 of the main rotary line 14.

[0067] like Fig. 9 As shown, the screw assembly station 3 includes a screw transfer mechanism 1 31 and a screw transfer mechanism 2 34 which are arranged at intervals and move along the transfer direction respectively, and a visual detection component 1 32 and a flip mechanism 33 are arranged in sequence below the screw transfer mechanism 1 31 and the screw transfer mechanism 2 34; the screw transfer mechanism 1 31 includes a vertical driving power 312 which is orderly and parallelly installed on a translation seat 311, and an end adjustment motor 313 is installed at the downward output end of the vertical driving power 312, and the downward output end of the end adjustment motor 313 is clamped by a clamping cylinder to clamp the axially horizontally arranged screw 300; the flipping mechanism 33 is installed with a clamping cylinder to clamp the screw 300 through a flipping plate connected to the motor, and the screw 300 is flipped from a horizontal state to a vertical state through the operation of the motor; the screw transfer mechanism 2 34 includes a lifting plate 343 installed on a lifting drive power 341, and a press-fitting drive power 342 is installed in order and in parallel above the lifting plate 343. The downward output end of the press-fitting drive power 342 is installed with a rotary motor 344 through a support plate 345, and the downward output end of the rotary motor 344 clamps the screw 300 through a clamping cylinder; it also includes a fixture opening and closing power 150.

[0068] When in use, the screw transfer mechanism 31 moves to the top of the vibration plate, and the screw 300 arranged horizontally at the discharge port of the vibration plate is clamped by the vertical driving power 312 and the clamping cylinder. The screw 300 is transferred to the top of the visual inspection component 32 by the screw transfer mechanism 31. The camera in the visual inspection component 32 is driven by the camera moving module 321 to take pictures and judge the ends of the screw 300 one by one. The end adjustment motor 313 works to horizontally rotate the screw 300 with an error at the end by 180° to a preset state; then the screw transfer mechanism 31 hands the screw 300 to the clamping cylinder of the flipping mechanism 33. The motor in the flipping mechanism 33 works to flip the screw 300 from a horizontal state to a vertical state; the clamping cylinder in the screw transfer mechanism 34 takes over the clamping screw 300 from the flipping mechanism 33 and transfers it to the accommodation position of the accompanying fixture 15, and the rotation motor 344 works in combination with the press-fitting drive power 342, prompting the clamping cylinder to drive the screw 300 downward while rotating, thereby realizing the threaded fitting of the bottom end of the screw 300 and the locator 200, and then the press-fitting drive power 342 works through the screw 300 to push the locator 200 to move downward synchronously, so that the locator 200 and the piston 100 below are press-fitted.

[0069] After the screw 300 is installed, the fixture opening and closing power 150 works to push the driving plate 152 in the accompanying fixture 15 to move, and the clamping parts 151 move toward each other to clamp the screw 300, so that the screw 300 is wrapped stably.

[0070] In actual use, a detection station 30 may be arranged behind the screw assembly station 3 to detect whether the screw 300 is installed in place downwards by means of a sensor or visual inspection.

[0071] like Fig.10 As shown, the structure of the spring assembly station 4 is as follows: it includes a translation seat 4 installed on the external linear module, a lifting plate 42 is installed on the translation seat 4 through a lifting driving power 4, a vertical track 4 is installed on the side of the lifting plate 42, a support plate 44 is slidably mounted on the vertical track 4, the support plate 44 is connected to the output end of the vertical driving power 41 above, a guide rod 45 is installed on the support plate 44 through a vertical guide rail 43, and a hole for the screw 300 to extend into is opened axially below the guide rod 45; a clamping cylinder is also installed on the support plate 44, and the end of the guide rod 45 extends to the upper side between the clamping claws on both sides of the clamping cylinder. It also includes a fixture opening and closing power 150 arranged opposite to each other.

[0072] When in use, the clamping cylinder clamps the spring 400 from the discharge port of the vibration plate and transfers it to the accompanying jig 15. When the spring 400 is mounted on the upper part of the screw 300, the top of the screw 300 gradually extends into the hole of the guide rod 45, and the opening and closing power 150 of the jig on one side works to release the clamping piece 151 from clamping the screw 300; the vertical drive power 41 continues to work until the spring 400 is lowered to a preset height, at which time the spring 400 is located at the corresponding position of the locator 200; after the clamping cylinder withdraws from the accompanying jig 15, the opening and closing power 150 of the jig on the other side works to allow the clamping piece 151 to clamp the screw 300 again.

[0073] In actual use, a second inspection station 40 may be arranged behind the spring assembly station 4 to detect whether the spring 400 is installed downward to the preset position of the positioner 200 through a sensor or visual inspection.

[0074] like Fig.11 , Fig.12 and Fig.13 As shown, the turntable mechanism 5 is provided with a turntable 50 with four stations, a fixture seat 51 is installed on the turntable 50, and a guide rod 52 extending upward is slidably installed on the fixture seat 51 through an elastic member 53, and a step surface for supporting the transmission rod 600 is provided on the guide rod 52; the pre-loading transfer station 503 includes a horizontal and vertical moving mechanism composed of a horizontal module 5031 and a lifting drive power 5032, and a lifting plate 5033 is installed on the side of the lifting drive power 5032. Vertical track, the vertical track has upper support five 5035, elastic component five 5036, lower support five 5037 from top to bottom, the upper support five 5035 is connected to the output end of the vertical driving power five 5034, the bottom surface of the lower support five 5037 is installed with a clamping cylinder, and the side of the clamping cylinder body is installed with a pressure block 5038, the pressure block 5038 extends to above the clamping claws on both sides of the clamping cylinder, and a blind hole matched with the top of the transmission rod 600 is opened in the middle of the bottom surface of the pressure block 5038.

[0075] When in use, the linkage gear assembly station 501 loads the linkage gear 500 and sets it on the guide rod 52. The linkage gear 500 is supported by the top surface of the fixture seat 51. The transmission rod assembly station 502 loads the transmission rod 600 and places it on the step surface of the guide rod 52. With the operation of the vertical driving power 5034, the pressing block 5038 and the clamping cylinder move downward synchronously, and the pressing block 5038 applies force downward to the top of the transmission rod 600, driving the transmission rod 600 and the guide rod 52 to compress the elastic member 53 and move downward, until the transmission rod 600 is pre-assembled with the linkage gear 500 through the vertical groove 601. The elastic member 53 elastically causes the linkage gear 500 to move upward with the transmission rod 600 and detach from the top surface of the fixture seat 51, and then the linkage gear 500 is lifted up by the clamping cylinder through the clamping claws. Fig.14As shown, the pre-assembled part is transferred to the accompanying fixture 15 of the main rotary line 14 . At this time, the transmission rod 600 is sleeved on the screw rod 300 above the clamping part 151 .

[0076] like Fig.15 and Fig.16 As shown, the structure of the fixed seat assembly station 6 is as follows: it includes a lifting driving power 61 slidably installed on the linear module via a translation seat, the lifting driving power 61 drives the lifting plate 611 to move up and down, and the side of the lifting plate 611 is orderly installed with vertical guide rails 621, and the vertical guide rails 621 are sequentially installed from top to bottom with an upper support 63, an elastic component 64, and a lower support 65, the upper support 63 is connected to the output end of the vertical driving power 62, and the lower support 665 is connected to the output end of the vertical driving power 62. A guide seat 66 is installed on the side through a guide driving power 661, and a clamping cylinder 667 is also installed on the side of the lower support 665, and a pressure seat 671 is installed on the main body of the clamping cylinder 67; the guide block 660 installed on the lower part of the guide seat 66, the lower pressure cylinder 672 installed on the bottom surface of the pressure seat 671, and the clamping parts of the clamping claws 673 on both sides are located on the same straight line from top to bottom; the guide block 660 is axially provided with a hole for the transmission rod 600 to be assembled and passed through; and it also includes a fixture opening and closing power 150.

[0077] When in use, the fixing seat 700 is moved from the external vibration plate to the top of the accompanying fixture 15 by the clamping cylinder 667 through the clamping claw 673, the vertical driving power 662 works, the clamping claw 673 moves downward, and the fixing seat 700 is mounted on the bottom end of the transmission rod 600. In this process, the clamping member 151 is driven to loosen the clamping of the screw rod 300 in cooperation with the fixture opening and closing power 150, the transmission rod 600 and the pre-assembled parts of the linkage gear 500 move downward, and the top end of the transmission rod 600 passes through the lower pressure cylinder 672 and the guide block 660 upward, and the guide block 660 limits the axial self-rotation of the transmission rod 600; the clamping cylinder 667 is used to fix the fixing seat 700 on the bottom end of the transmission rod 600. 7 Release the clamping of the fixed seat 700, the vertical driving power six 62 continues to work, the bottom surface of the lower pressure cylinder 672 contacts and applies force to the fixed seat 700, driving the fixed seat 700 to move downward and be clamped on the positioner 200, so that the piston 100, the positioner 200, the screw rod 300, the spring 400, the linkage gear 500, the transmission rod 600, and the fixed seat 700 are installed as a whole; then the clamping cylinder six 67 is clamped on the fixed seat 700 again for temporary fixation, the guide driving power 661 drives the guide block 660 to disengage from the transmission rod 600 upward, and the clamping cylinder six 67 releases the clamping to complete the operation of this station.

[0078] like Fig.17As shown, the pen body tube assembly station 7 includes a material end adjustment mechanism 71 connected to the discharge end of the vibration plate, and a self-rotation mechanism 72 is installed directly below the lower material cylinder 716 at the bottom of the material end adjustment mechanism 71; it also includes a pen body tube transferring mechanism 1 73 and a pen body tube transferring mechanism 2 75 which are moved and arranged at intervals along the transferring direction, and a positioning mechanism 74 is arranged below the pen body tube transferring mechanism 1 73; the pen body tube transferring mechanism 2 75 transfers the pen body tube 800 from the positioning mechanism 74 to the main rotating line 14 and presses it down for assembly.

[0079] like Fig.18 , Fig.19 and Fig. 20 As shown, the structure of the material end adjustment mechanism 71 is as follows: it includes a support seat 712 connected and installed on the discharge end 711 of the vibration plate, and a feed trough 7122 for the pen body tube 800 to enter horizontally is provided on the support seat 712; a material distribution mechanism 713 is installed above the support seat 712, and a material distribution plate 7131 in the material distribution mechanism 713 is provided with a material storage trough 71311 for accommodating the horizontally arranged pen body tube 800, and the material distribution plate 7131 is pushed and moved by the cylinder so that the material storage trough 71311 is opposite to one of the feed trough 7122 and the discharge trough 7121; an upper pressing mechanism 715 and a lower pressing mechanism 717 are installed at the end of the support seat 712 away from the discharge end 711, The support seat 712 is provided with a feeding trough 7121 for the pen body 800 to fall down, and a feeding barrel 716 is connected and installed below the feeding trough 7121. The cross section of the feeding barrel 716 is a structure with a large upper part and a small lower part. A swing mechanism 714 is installed on the upper part of the feeding barrel 716; the upper pressing mechanism 715 and the lower pressing mechanism 717 include pressing blocks arranged above and below the pen body 800, and the end faces facing each other of the two pressing blocks are arranged as an inwardly concave arc structure that matches the circumference of the pen body 800. The middle part of the inwardly concave arc structure is provided with a cavity connected to an external air source, and a through hole is provided on the support seat 712 for the lower pressing block to pass upward; one end of the pen body 800 is provided with an inner and outer through hole. The swing mechanism 714 includes a swing block 7141 driven to swing by a swing motor 7142, and the swing block 7141 is located at the upper opening of the feeding barrel 716.

[0080] When in use, the pen body tube 800 enters the material storage groove 71311 of the dividing plate 7131 from the discharge end 711 of the vibration plate through the material feeding groove 7122 of the support seat 712, and the upper pressing mechanism 715 and the lower pressing mechanism 717 move towards each other, and the upper and lower pressing blocks are respectively attached to the same circumference of the end of the pen body tube 800, and the air source connected to the cavity works, and the direction of the end of the pen body tube 800 is determined by the pressure maintenance condition inside the cavity; the swing mechanism 714 moves according to the end The judgment of the direction drives the pendulum block 7141 to swing; the dividing plate 7131 in the dividing mechanism 713 moves, pushing the pen body tube 800 to move above the discharge chute 7121, and the pen body tube 800 falls from the discharge chute 7121 into the discharge cylinder 716. The falling pen body tube 800 is guided by the pendulum block 7141 and falls downward with a preset end, for example, the end of the pen body tube 800 with a through hole faces upward, thereby realizing the end adjustment of the pen body tube 800.

[0081] The pen body tube 800 after the end adjustment falls and is clamped on the clamping cylinder of the self-rotating mechanism 72. With the detection of the detection mechanism such as the sensor, the motor in the self-rotating mechanism 72 works to drive the pen body tube 800 to rotate with its own axis as the center, so as to adjust the through hole to the preset direction; the self-rotating mechanism 72 is horizontally moved out under the drive of the linear module, and the pen body tube transfer mechanism 1 73 transfers the pen body tube 800 from the self-rotating mechanism 72 to the positioning mechanism 74, and the profiling member on the positioning mechanism 74 centers the pen body tube 800. The pen body tube transfer mechanism 2 75 transfers the pen body tube 800 on the positioning mechanism 74 to the accompanying fixture 15 of the main rotating line 14, and the downward driving power in the pen body tube transfer mechanism 2 75 works to drive the pen body tube 800 to be pressed down and mounted on the circumferential outside of the positioner 200, thereby completing the assembly of the pen body tube assembly.

[0082] A material unloading rotary line 9 is arranged between the detection and transfer station 8 and the unloading robot 11. Fig.21 As shown, the detection and transfer station 8 includes a first transfer mechanism 81 and a second transfer mechanism 82 which are installed at intervals and move independently along the transfer direction, and an intermediate clamping position 83 and a second visual detection component 84 are arranged below; the detection and transfer station 8 transfers the assembled pen body tube components to each rotating seat of the unloading turntable 9, and a stop mechanism 92 is arranged on the unloading turntable 9 located at the unloading robot 11, and a tray unloading conveyor line 10 is arranged at the unloading robot 11; a preset number of rotating seats are blocked by the stop mechanism 92 and arranged closely, and the unloading robot 11 transports the pen body tube components on the preset number of rotating seats to the tray at a time.

[0083] A cleaning station, an inspection station, and a manual operation station 13 are provided on the main turntable 14 located behind the inspection and transfer station 8. For example, the accompanying fixture 15 is cleaned by air blowing or the like, and the sensor detects whether the accompanying fixture 15 is free of material after cleaning. The inspection and transfer station 8 is also connected to the NG conveyor line 12, and the NG conveyor line 12 is arranged parallel to the main turntable 14.

[0084] When in use, the first transfer mechanism 81 transfers the pen body tube assembly from the accompanying fixture 15 to the middle clamping position 83, and the pen body tube assembly is inspected by the second visual inspection component 84 below. According to the inspection result, the second transfer mechanism 82 transfers the qualified pen body tube assembly from the middle clamping position 83 to the rotating seat of the unloading turntable 9, and transfers the unqualified pen body tube assembly to the NG conveyor line 12 for unloading. Since the second transfer mechanism 82 transfers multiple pen body tube assemblies at a time, some of them may be unqualified and unloaded onto the NG conveyor line 12, resulting in that after the second transfer mechanism 82 unloads the pen body tube assemblies onto the turntable on the unloading turntable line 9 at a time, there may be a situation where there is no material on some turntables; in the process of the turntable flowing along the unloading turntable line 9 toward the unloading robot 11, the detection and pushing mechanism 91 detects whether there is material on the turntable, and pushes the turntable without material to the opposite direction toward the detection and transfer station 8; the turntables loaded with pen body tube assemblies are stopped by the stop mechanism 92 and tightly arranged in a preset number, and the unloading robot 11 unloads them into the material tray in batches.

[0085] In this embodiment, the loading and unloading conveyor line 10 includes two parallel lines, one for stacking empty trays for loading materials, and the other for stacking full trays for unloading materials. The stacking and unstacking of the trays are automated using existing technology, and the loading and unloading of the pen body tube assembly is achieved in combination with the unloading robot 11.

[0086] The assembly method of the automatic assembly device for the injection pen barrel assembly of this embodiment comprises the following steps:

[0087] The piston assembly station 1 loads the piston 100 onto the accompanying jig 15 of the main rotary line 14, and the positioner assembly station 2 loads the positioner 200 into the accompanying jig 15, and the piston 100 and the positioner 200 are respectively positioned in the accommodation positions of the accompanying jig 15; the screw assembly station 3 loads the screw 300 into the accompanying jig 15, rotates the screw 300 and threads it with the positioner 200 below, and applies downward pressure on the screw 300 to cause the positioner 200 to be buckled downward onto the piston 100; the spring assembly station 4 loads the spring 400 into the accompanying jig 15, and the spring 400 is accommodated in the preset position of the positioner 200.

[0088] The linkage gear assembly station 501 and the transmission rod assembly station 502 in the turntable mechanism 5 respectively load the linkage gear 500 and the transmission rod 600 onto the turntable 50, and the pre-installation transfer station 503 applies downward force to the transmission rod 600 so that the bottom end of the transmission rod 600 is pre-installed with the linkage gear 500; the pre-installation transfer station 503 transfers the pre-installed components to the accompanying fixture 15 of the main rotary line 14.

[0089] The fixed seat assembly station 6 loads the fixed seat 700 onto the accompanying fixture 15, lowers the fixed seat 700 while guiding the screw 300, and applies downward force to the fixed seat 700, so that the fixed seat 700 is buckled downward on the locator 200; the pen body tube assembly station 7 loads the pen body tube 800 onto the accompanying fixture 15, and the pen body tube 800 moves downward to complete the assembly; the inspection and transfer station 8 combines with the unloading robot 11 to load the pen body tube assembly onto a tray.

[0090] The present invention realizes the fully automated assembly of the pen body tube assembly, effectively coordinates and matches the assembly time of each workstation, greatly improves the assembly efficiency, and ensures the assembly effect.

[0091] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0092] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. An automatic assembly device for an injection pen barrel assembly, the barrel assembly comprising a piston (100), a positioner (200), a screw (300), a spring (400), a linkage gear (500), a transmission rod (600), a fixing seat (700), and a barrel (800), the automatic assembly device comprising a working platform, characterized in that: The working platform is provided with a main rotary line (14), and a piston assembly station (1), a positioner assembly station (2), a screw assembly station (3), and a spring assembly station (4) are arranged in sequence on one side of the main rotary line (14) along the conveying direction; a fixed seat assembly station (6), a pen body assembly station (7), and a detection and transfer station (8) are arranged in sequence on the other side of the main rotary line (14) along the conveying direction; the main rotary line (14) at the spring assembly station (4) and the fixed seat assembly station (6) A turntable mechanism (5) is arranged outside the end of the line (14); the turntable mechanism (5) includes a linkage gear assembly station (501), a transmission rod assembly station (502), a pre-installation transfer station (503), and an empty position detection station arranged in sequence along the rotation direction; the pre-installation transfer station (503) pre-assembles the linkage gear (500) and the transmission rod (600) and transfers them to the main rotary line (14); and also includes a material unloading robot (11) located behind the detection transfer station (8).

2. The automatic assembly equipment for the injection pen barrel assembly according to claim 1, characterized in that: The main rotary line (14) is provided with accompanying jigs (15) arranged at intervals for transportation, each accompanying jig (15) comprising a plurality of accommodating positions, and each accommodating position is provided with clamping members (151) on both sides thereof that passively move toward or away from each other; the clamping members (151) clamp or release the screw rod (300) during the assembly process.

3. The automatic assembly equipment for the injection pen barrel assembly according to claim 2, characterized in that: The arrangement form and the number of the clamping actuators in the positioner assembly station (2), the screw assembly station (3), the spring assembly station (4), the fixing seat assembly station (6), the pen body assembly station (7) and the turntable mechanism (5) are consistent with the arrangement form and the number of the accommodating positions on the accompanying fixture (15), and the parallel clamping actuators in the same station act independently.

4. The automatic assembly equipment for the injection pen barrel assembly according to claim 3, characterized in that: The clamping actuator is a clamping cylinder, which is installed on a lower support. The lower support and the upper support are slidably installed on a vertical track with an upper and lower interval. An elastic component is installed between the upper support and the lower support, and the upper support is installed below the linear drive power.

5. The automatic assembly equipment for the injection pen barrel assembly according to claim 1, characterized in that: The piston assembly station (1), the positioner assembly station (2), the screw assembly station (3), the spring assembly station (4), the fixed seat assembly station (6), the pen body assembly station (7), the linkage gear assembly station (501), and the transmission rod assembly station (502) all use a vibration disk to sort and feed materials, and the vibration disk is arranged in an orderly manner along the main rotation line (14); the piston assembly station (1) uses a suction cup adsorption clamping form to transfer the piston (100) from the output end of the vibration disk to the accompanying fixture (15); the positioner assembly station (2), the screw assembly station (3), the spring assembly station (4), the fixed seat assembly station (6), the pen body assembly station (7), the linkage gear assembly station (501), and the transmission rod assembly station (502) all use a clamping form of clamping cylinders to take materials from the vibration disk.

6. The automatic assembly equipment for the injection pen barrel assembly according to claim 1, characterized in that: The screw assembly station (3) comprises a screw transfer mechanism (31) and a screw transfer mechanism (34) which are arranged at intervals and move along the transfer direction respectively, and a visual detection component (32) and a flip mechanism (33) are arranged in sequence below the screw transfer mechanism (31) and the screw transfer mechanism (34); the screw transfer mechanism (31) comprises a vertical drive power (312), and an end adjustment motor (313) is installed at the output end of the vertical drive power (312) facing downwards, and the end adjustment motor (313) is installed at the output end of the vertical drive power (312). The downward output end of the adjustment motor (313) clamps the axially horizontally arranged screw (300) through a clamping cylinder; the flipping mechanism (33) flips the screw (300) from a horizontal state to a vertical state; the second screw transfer mechanism (34) includes a press-fitting driving power (343), the downward output end of the press-fitting driving power (343) is installed with a rotary motor (342), and the downward output end of the rotary motor (342) clamps the screw (300) through a clamping cylinder; and also includes a fixture opening and closing power (150).

7. The automatic assembly equipment for the injection pen barrel assembly according to claim 1, characterized in that: The pen body tube assembly station (7) comprises a material end adjustment mechanism (71) connected to the material discharge end of the vibration plate, and a self-rotating mechanism (72) is installed directly below the material discharge cylinder (716) at the bottom of the material end adjustment mechanism (71); it also comprises a pen body tube transfer mechanism 1 (73) and a pen body tube transfer mechanism 2 (75) which are arranged at intervals and move along the transfer direction, and a positioning mechanism (74) is arranged below the pen body tube transfer mechanism 1 (73); the pen body tube transfer mechanism 2 (75) transfers the pen body tube (800) from the positioning mechanism (74) to the main rotating line (14) and presses it down for assembly.

8. The automatic assembly equipment for the injection pen barrel assembly according to claim 1, characterized in that: A material unloading rotary line (9) is arranged between the detection and transfer station (8) and the unloading robot (11); the detection and transfer station (8) transfers the assembled pen body tube components to each rotating seat of the material unloading rotary line (9); a stop mechanism (92) is arranged on the unloading rotary line (9) at the unloading robot (11); and a tray unloading conveyor line (10) is arranged at the unloading robot (11); a preset number of rotating seats are blocked by the stop mechanism (92) and arranged closely, and the unloading robot (11) carries the pen body tube components on the preset number of rotating seats to the material tray at a time.

9. The automatic assembly equipment for the injection pen barrel assembly according to claim 1, characterized in that: A cleaning station, a testing station, and a manual operation station are arranged on the main rotary line (14) located behind the testing and transferring station (8); the testing and transferring station (8) is also connected to the NG conveying line (12), and the NG conveying line (12) is arranged in parallel with the main rotary line (14).

10. An assembly method of the automatic assembly equipment for the injection pen barrel assembly according to claim 3, characterized in that: The steps include: The piston assembly station (1) loads the piston (100) onto the accompanying jig (15) of the main rotary line (14); the positioner assembly station (2) loads the positioner (200) into the accompanying jig (15); the piston (100) and the positioner (200) are respectively positioned in the receiving positions of the accompanying jig (15); the screw assembly station (3) loads the screw (300) into the accompanying jig (15), rotates the screw (300) to threadably mate with the positioner (200) below, and applies downward pressure to the screw (300) to cause the positioner (200) to buckle downward onto the piston (100); the spring assembly station (4) loads the spring (400) into the accompanying jig (15), and the spring (400) is accommodated in the preset position of the positioner (200); The linkage gear assembly station (501) and the transmission rod assembly station (502) in the turntable mechanism (5) respectively load the linkage gear (500) and the transmission rod (600) onto the turntable (50); the pre-installation transfer station (503) applies force downward to the transmission rod (600) so that the bottom end of the transmission rod (600) is pre-installed with the linkage gear (500); the pre-installation transfer station (503) transfers the pre-installed components to the accompanying fixture (15) of the main rotary line (14); The fixing seat assembly station (6) loads the fixing seat (700) onto the accompanying jig (15), lowers the fixing seat (700) while the guide screw (300) is being guided, and applies force downward to the fixing seat (700), so that the fixing seat (700) is buckled downward onto the positioner (200); The pen body tube assembly station (7) loads the pen body tube (800) onto the accompanying fixture (15), and the pen body tube (800) moves downward to complete the assembly; The detection and transfer station (8) is combined with the unloading robot (11) to load and unload the pen body tube assembly.

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