Syringe assembly process

Abstract

The invention relates to the technical field of assembly processes, in particular to an injector assembly process. An injector assembly technology comprises the following steps that S1, penholder feeding and detection are conducted, specifically, penholders are fed to a machining station of a conveying belt, and the heights of push rods in the penholders are detected; s2, feeding and detecting the cartridge bottle bracket; s4, feeding and detecting the pen cap; s5, feeding and detecting the cartridge bottle: feeding the cartridge bottle and detecting the height of a rubber plug of the cartridge bottle; s6, forward screwing of the penholder: calculating the number of turns of forward screwing of the penholder according to the height of the push rod obtained in the step S1 and the height of the rubber plug obtained in the step S5, and performing forward screwing on the penholder by a penholder forward screwing station according to the calculated number of turns of screwing; s7, the penholder and the cartridge bottle are pre-assembled; s8, pressing the pen holder and the cartridge bottle; s9, reversely screwing and resetting the pen holder; s10, the pen holder and the pen cap are assembled; and S11, discharging is conducted. The injector assembly process is high in assembly efficiency and high in yield.

Description

Technical Field

[0001] The present application relates to the technical field of assembly technology, and in particular to a syringe assembly process. Background Art

[0002] Insulin syringes are pressure injection devices formed by automated assembly of pen holders, pen caps, cartridge holders and cartridges. The existing automated assembly process has complicated assembly steps, and lacks inspection links before and after assembly of each link. It is impossible to ensure that each finished product after assembly can achieve consistent quality and appearance, and the overall assembly efficiency is low, and the yield rate is low. Summary of the invention

[0003] Based on this, it is necessary to provide a syringe assembly process with high assembly efficiency and high yield rate.

[0004] A syringe assembly process comprises the following steps:

[0005] S1. Pen loading and testing: Load the pen onto the processing station on the conveyor belt and test the height of the push rod inside the pen;

[0006] S2. Loading and testing of cassette bottle holders: Load the cassette bottle holders to the processing station of the conveyor belt, and perform in-place testing on the cassette bottle holders;

[0007] S3, pen cap loading and inspection: load the pen cap to the processing station on the conveyor belt, and inspect the pen cap for in-place status;

[0008] S4, loading and testing the cartridge: loading the cartridge onto the cartridge holder in step S2, and testing the height of the stopper of the cartridge;

[0009] S5, forward twisting of the pen holder: according to the push rod height obtained in step S1 and the rubber plug height obtained in step S4, the number of turns of the pen holder forward twisting is calculated, and the pen holder forward twisting station forward twists the pen holder according to the calculated number of turns;

[0010] S6, pre-assembling the pen holder and the cartridge: placing the pen holder screwed in step S5 onto the cartridge in step S4;

[0011] S7, pressing the pen holder and the cartridge bottle together: applying pressure on the pen holder to press the pen holder and the cartridge bottle together, and synchronously detecting the pressing force and the pressing position during the pressure application process, and stopping the pressing when the pressing force and the pressing position are both within a specified range;

[0012] S8, reversely twisting and resetting the pen holder: reversely twisting the pen holder after pressing, and resetting the scale on the pen holder;

[0013] S9, assembling the pen body and pen cap: assemble the pen body reset in step S8 onto the pen cap in step S3.

[0014] In one of the embodiments, the method is based on a syringe assembly system; the syringe assembly system includes a conveyor belt, a processing station, a pen barrel loading station, a pen barrel detection station, a cassette bottle holder loading station, a cassette bottle holder detection station, a pen cap loading station, a pen cap detection station, a cassette bottle loading station, a cassette bottle detection station, a pen barrel forward screwing station, a pre-assembly station, a pressing station, a pen barrel reverse screwing station, a pen barrel resetting station, an assembly station, a unloading station and a control unit; the processing stations are arranged in plurality and are spaced apart on the conveyor belt; each of the processing stations is provided with a pen barrel slot, a pen cap slot and a cassette bottle holder slot; the conveyor belt can rotate cyclically to drive the processing stations to move to different station positions.

[0015] In one embodiment, the syringe assembly process includes the following steps:

[0016] S1, pen loading and testing: the conveyor belt drives the processing station to move to the pen loading station position, and the pen loading station loads the pen onto the pen slot; then, the conveyor belt drives the processing station to move to the pen testing station position, and the pen testing station tests the height of the push rod in the pen;

[0017] S2, cassette bottle holder loading and inspection: the conveyor belt drives the processing station to move to the cassette bottle holder loading station position, and the cassette bottle holder loading station loads the cassette bottle holder onto the cassette bottle holder slot; then, the conveyor belt drives the processing station to move to the cassette bottle holder inspection station position, and the cassette bottle holder at the cassette bottle holder inspection station performs in-place inspection;

[0018] S3, pen cap loading and detection: the conveyor belt drives the processing station to move to the pen cap loading station, and the pen cap loading station loads the pen cap onto the pen cap slot; then, the conveyor belt drives the processing station to move to the pen cap detection station, and the pen cap detection station performs a detection on the pen cap in place;

[0019] S4, cartridge bottle loading and inspection: the conveyor belt drives the processing station to move to the cartridge bottle loading station, and the cartridge bottle loading station loads the cartridge bottle on the processing station onto the cartridge bottle holder in step S2; then, the conveyor belt drives the processing station to move to the cartridge bottle inspection station, and the cartridge bottle inspection station inspects the height of the rubber stopper of the cartridge bottle;

[0020] S5, forward twisting of the pen holder: the conveyor belt drives the processing station to move to the pen holder forward twisting station position, and the number of turns of the pen holder forward twisting is calculated according to the push rod height obtained in step S1 and the rubber plug height obtained in step S4, and the pen holder forward twisting station forward twists the pen holder according to the calculated number of turns;

[0021] S6, pre-assembling the pen holder and the cartridge bottle: the conveyor belt drives the processing station to move to the pre-assembly station position, and the pre-assembly station places the pen holder screwed in step S5 on the cartridge bottle in step S4;

[0022] S7, pressing the pen holder and the cartridge bottle: the conveyor belt drives the processing station to move to the pressing station position, and the pressing station applies pressure to the pen holder to press the pen holder and the cartridge bottle together. During the pressing process, the pressing force and the pressing position are simultaneously detected, and the pressing is stopped when the pressing force and the pressing position are both within the specified range;

[0023] S8, reverse twisting and resetting of the pen holder: the conveyor belt drives the processing station to move to the pen holder reverse twisting station position, and the pen holder reverse twisting station reversely twists the pen holder after the pressing is completed; then, the conveyor belt drives the processing station to move to the pen holder resetting station position, and the pen holder resetting station resets the scale on the pen holder;

[0024] S9, assembling the pen barrel and pen cap: the conveyor belt drives the processing station to move to the assembly station, and the assembly station assembles the pen barrel reset in step S8 on the processing station to the pen cap in step S3, and the assembly is completed;

[0025] S10, unloading: The conveyor belt drives the processing station to move to the unloading station, and the unloading station unloads the workpiece assembled on the processing station.

[0026] In one of the embodiments, the pen barrel loading station, the cartridge bottle holder loading station, the pen cap loading station and the cartridge bottle loading station are respectively provided with material trays on the sides, and each of the material trays is respectively provided with a plurality of material slots; the pen barrel loading station, the cartridge bottle holder loading station, the pen cap loading station and the cartridge bottle loading station respectively take materials from the material trays to the processing station, the number of materials taken at a time is at least two, and there is at least one material interval between the materials taken.

[0027] In one embodiment, the pen holder detection station includes a bracket, an upper detection component and a lower detection component. In the height direction, the upper detection component is arranged at the upper part of the bracket, and the lower detection component is arranged at the lower part of the bracket. There is a gap between the upper detection component and the lower detection component for the processing station to enter;

[0028] The upper detection component includes an upper mounting frame, a first lifting driving member, a detection rod, a pressure block and a detection sensor. The first lifting driving member is arranged on the bracket and connected to the upper mounting frame. The detection rod is arranged on the upper mounting frame so as to be movable up and down. The pressure block is arranged at the bottom of the detection rod.

[0029] The lower detection component includes a lower mounting frame, a second lifting drive member, a moving rod, and a displacement sensor. The second lifting drive member is arranged on the bracket and connected to the lower mounting frame. The moving rod is arranged on the lower mounting frame so as to be movable up and down. The displacement sensor is arranged on the top of the moving rod.

[0030] The steps of the pen holder detection station in step S1 detecting the height of the push rod in the pen holder are as follows:

[0031] S1.1, the processing station is located within the spacing between the upper detection component and the lower detection component;

[0032] S1.2, the first lifting drive member starts to drive the upper mounting frame to move downward, the detection rod and the upper mounting frame move downward synchronously, the pressing block abuts against the top of the pen holder on the processing station and pushes the detection rod to move upward, the detection sensor detects the upward movement of the detection rod, and determines that there is a pen holder on the processing station;

[0033] S1.3, the second lifting drive component starts to drive the lower mounting frame to move upward, the moving rod and the lower mounting frame move upward synchronously, and the displacement sensor component penetrates into the pen barrel from the bottom of the pen barrel on the processing station, and abuts against the push rod in the pen barrel to detect the height of the push rod.

[0034] In one embodiment, the number of the pen holder slots is at least two; the pen holder forward screwing station comprises a first screwing head, a first rotary drive, a first coupling, a first torque detector, a second screwing head, a second rotary drive, a second coupling and a second torque detector; the first screwing head is connected to the first rotary drive via a first coupling, and the first torque detector is disposed on the first coupling; the second screwing head is connected to the second rotary drive via a second coupling, and the second torque detector is disposed on the second coupling; the first rotary drive, the first torque detector, the second rotary drive and the second torque detector are electrically connected to the control unit respectively;

[0035] The steps of forwardly twisting the pen holder in step S5 are as follows:

[0036] S5.1, the control unit calculates the number of turns required for each pen holder to be screwed in the forward direction according to the push rod height obtained in step S1 and the plug height obtained in step S4, and transmits the data to the first rotary drive member and the second rotary drive member accordingly;

[0037] S5.2. The first rotary drive member drives the first screwing head to rotate according to the number of turns of forward screwing required for the corresponding position of the pen shaft, thereby driving the pen shaft to be screwed forward; after being screwed into place, the first torque detection member detects the increase in torque and transmits a signal to the control unit, and the control unit controls the first rotary drive member to stop; the second rotary drive member drives the second screwing head to rotate according to the number of turns of forward screwing required for the corresponding position of the pen shaft, thereby driving the pen shaft to be screwed forward; after being screwed into place, the second torque detection member detects the increase in torque and transmits a signal to the control unit, and the control unit controls the second rotary drive member to stop.

[0038] In one embodiment, the laminating station comprises a laminating support, a pressing head that can move up and down, a laminating driving member, a movable frame, a displacement monitoring member and a pressure monitoring member, wherein the laminating driving member is connected to the pressing head and is used to drive the pressing head to move up and down; the movable frame is movably arranged on the laminating support; along the moving direction of the movable frame, one end of the movable frame is connected to the pressing head, and the other end is connected to the displacement monitoring member and the pressure monitoring member;

[0039] The steps of pressing the pen shaft and the cartridge bottle in step S7 are as follows: the pressing drive component drives the pressure head to move downward to apply pressure on the pen shaft to press the pen shaft and the cartridge bottle, the pressure head drives the movable frame to move downward, the displacement monitoring component and the pressure monitoring component synchronously detect the displacement value and the pressure value in the pressing process according to the downward movement of the movable frame, and feed back to the control unit, after the control unit determines that the pressing force and the pressing position are both within the specified range, it controls the pressing drive component to stop, and the pressing operation ends.

[0040] In one embodiment, the syringe assembly system also includes a visual inspection station, a residual material inspection station and a dust removal station. The visual inspection station is used to take pictures to detect whether the scale of the workpiece to be unloaded is at zero; the residual material inspection station is used to detect whether there are no workpieces unloaded at the processing station; and the dust removal station is used to perform dust removal operations on the processing station after unloading is completed.

[0041] In one embodiment, the unloading station includes a good product unloading device and a defective product unloading device. The good product unloading device is used to unload the workpiece to be unloaded whose scale is at zero position, and the defective product unloading device is used to unload the workpiece to be unloaded whose scale is not at zero position.

[0042] Step S10 includes the following steps:

[0043] S10.1. The conveyor belt drives the processing station to move to the visual inspection station. The visual inspection station takes a photo of the workpiece to be unloaded on the processing station and feeds back to the control unit whether the scale of the workpiece to be unloaded is at zero position;

[0044] S10.2, the conveyor belt drives the processing station to move to the position of the good product unloading device, and the good product unloading device receives feedback from the control unit and unloads the workpiece to be unloaded whose scale on the processing station is at zero position;

[0045] S10.3. The conveyor belt drives the processing station to move to the position of the defective product unloading device. The defective product unloading device receives feedback from the control unit and unloads the workpieces to be unloaded whose scale on the processing station is not at zero.

[0046] In one embodiment, the syringe assembly process further comprises the following steps:

[0047] S11, residual material detection: The conveyor belt drives the processing station after unloading to move to the residual material detection station position, and the residual material detection station detects whether there are no workpieces unloaded at the processing station; if residual material is detected, the material is unloaded; if no residual material is detected, the next step is continued;

[0048] S12, Dust removal: The conveyor belt drives the processing station to move to the dust removal station, and the dust removal station cleans the dust on the processing station.

[0049] Compared with the prior art, the syringe assembly process achieves consistent appearance and good quality for each finished product by synchronously coordinating the detection link in each processing link, with high overall yield rate, high consistency and strong reliability. During the assembly process, the height of the push rod is first detected, and then the height of the cartridge bottle piston is detected. After calculation by the system, the number of turns required for each pen holder to be screwed forward is accurately obtained, so that the initial positions of the push rod and piston of each pen holder are consistent, further improving the quality of the finished product. In the pen holder and cartridge bottle pressing and assembly link, the pressing force and pressing position are detected in real time to ensure that the final assembly state of each product remains consistent, further improving the quality of the finished product. The various steps of the entire assembly process cooperate with each other and complement each other. The overall steps are clear and reasonable, with high assembly efficiency and high yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0051] Figure 1 Flow chart of the syringe assembly process provided for this application.

[0052] Figure 2 A detailed step flow chart of the syringe assembly process step S1 provided in this application.

[0053] Figure 3 A detailed step flow chart of the syringe assembly process step S5 provided in this application.

[0054] Figure 4 A detailed step flow chart of the syringe assembly process step S10 provided in this application.

[0055] Figure 5 A schematic diagram of the structure of the syringe assembly system provided in this application.

[0056] Figure 6 A three-dimensional schematic diagram of the syringe assembly system provided in this application.

[0057] Figure 7 This is a schematic diagram of the structure of the processing station provided in this application.

[0058] Figure 8 A schematic diagram of the structure of the material tray provided in this application.

[0059] Fig. 9 A schematic diagram of the structure of the pen holder inspection station provided for this application.

[0060] Fig.10 A side view schematic diagram of the pen holder inspection station provided in this application.

[0061] Fig.11 This is a schematic structural diagram of the pen holder forward screwing station provided in this application.

[0062] Fig.12 This is a schematic diagram of the structure of the pressing station provided in this application.

[0063] Fig.13 A side view schematic diagram of the pressing station provided in this application.

[0064] 1. Conveyor belt; 2. Processing station; 21. Pen holder slot; 22. Pen cap slot; 23. Cassette bottle holder slot; 3. Pen holder loading station; 4. Pen holder detection station; 41. Bracket; 42. Upper detection component; 421. Upper mounting frame; 422. First lifting drive member; 423. Detection rod; 424. Press block; 425. Detection sensor; 43. Lower detection component; 431. Lower mounting frame; 432. Second lifting drive member; 433. Moving rod; 434. Displacement sensor; 5. Cassette bottle holder loading station; 6. Cassette bottle holder detection station; 7. Pen cap loading station; 8. Pen cap detection station; 9. Cassette bottle loading station; 10. Cassette bottle detection station; 20. Pen Rod forward screwing station; 201, first screwing head; 202, first rotary drive member; 203, first coupling; 205, second screwing head; 206, second rotary drive member; 207, second coupling; 30, pre-assembly station; 40, pressing station; 401, pressing bracket; 402, pressure head; 403, movable frame; 404, displacement monitoring member; 405, pressure monitoring member; 50, pen holder reverse screwing station; 60, pen holder reset station; 70, assembly station; 80, unloading station; 81, good product unloading device; 82, defective product unloading device; 91, visual inspection station; 92, residual material inspection station; 93, dust removal station; 100, material tray; 101, material trough. DETAILED DESCRIPTION

[0065] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0066] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0070] See also Figures 1 to 4 The present application provides a syringe assembly process, which comprises the following steps:

[0071] S1, pen holder loading and testing: loading the pen holder onto the processing station 2 of the conveyor belt 1, and testing the height of the push rod in the pen holder;

[0072] S2, loading and testing of the cassette bottle holder: loading the cassette bottle holder onto the processing station 2 of the conveyor belt 1, and performing a placement test on the cassette bottle holder;

[0073] S3, loading and testing of pen caps: loading the pen caps onto the processing station 2 of the conveyor belt 1, and testing the pen caps for their position;

[0074] S4, loading and testing the cartridge: loading the cartridge onto the cartridge holder in step S2, and testing the height of the stopper of the cartridge;

[0075] S5, forward twisting of the pen holder: according to the push rod height obtained in step S1 and the rubber plug height obtained in step S4, the number of turns of the pen holder forward twisting is calculated, and the pen holder forward twisting station 20 forward twists the pen holder according to the calculated number of turns;

[0076] S6, pre-assembling the pen holder and the cartridge: placing the pen holder screwed in step S5 onto the cartridge in step S4;

[0077] S7, pressing the pen holder and the cartridge bottle together: applying pressure on the pen holder to press the pen holder and the cartridge bottle together, and synchronously detecting the pressing force and the pressing position during the pressure application process, and stopping the pressing when the pressing force and the pressing position are both within a specified range;

[0078] S8, reversely twisting and resetting the pen holder: reversely twisting the pen holder after pressing, and resetting the scale on the pen holder;

[0079] S9, assembling the pen body and pen cap: assemble the pen body reset in step S8 onto the pen cap in step S3.

[0080] It is understandable that in the entire assembly process, whether it is loading, pre-assembly, or pressing and assembling, the detection link will be coordinated synchronously, so that each finished product obtained by processing can achieve consistent appearance and good quality, with high overall yield rate, high consistency, and strong reliability. During the assembly process, the height of the push rod is first detected, and then the height of the cartridge bottle piston is detected. After calculation by the system, the number of turns required for each pen holder to be screwed forward is accurately obtained, so that the initial positions of the push rod and piston of each pen holder are consistent, further improving the quality of the finished product. In the pressing and assembling link of the pen holder and the cartridge bottle, the pressing force and pressing position are detected in real time to ensure that the final assembly state of each product remains consistent, further improving the quality of the finished product. The various steps of the entire assembly process cooperate with each other and complement each other. The overall steps are clear and reasonable, with high assembly efficiency and high yield rate.

[0081] See also Figures 5 to 13 , the syringe assembly process is based on the syringe assembly system. Specifically, the syringe assembly system includes a conveyor belt 1, a processing station 2, a pen barrel loading station 3, a pen barrel detection station 4, a cassette bottle holder loading station 5, a cassette bottle holder detection station 6, a pen cap loading station 7, a pen cap detection station 8, a cassette bottle loading station 9, a cassette bottle detection station 10, a pen barrel forward screwing station 20, a pre-assembly station 30, a pressing station 40, a pen barrel reverse screwing station 50, a pen barrel reset station 60, an assembly station 70, a blanking station 80 and a control unit. The processing station 2 is set to a plurality of processing stations 2, which are distributed at intervals on the conveyor belt 1. Each processing station 2 is respectively provided with a pen barrel groove 21, a pen cap groove 22 and a cassette bottle holder groove 23. The pen barrel can be loaded into the pen barrel groove 21, the pen cap can be loaded into the pen cap groove 22, and the cassette bottle holder can be loaded into the cassette bottle holder groove 23. The conveyor belt 1 can rotate cyclically to drive the processing workers to move to different workstations.

[0082] For example, the control unit adopts a PLC or a single chip microcomputer, and the above-mentioned stations and the conveyor belt 1 can be electrically connected to the control unit, and the operation of the entire syringe assembly system is controlled by the control unit. The principle of the circular rotation of the conveyor belt 1 is prior art and will not be described in detail.

[0083] See also Figure 8 The pen barrel loading station 3, the bottle holder loading station 5, the pen cap loading station 7 and the bottle holder loading station 9 are provided with material trays 100 on their sides, and each material tray 100 is provided with a plurality of material slots 101. The pen barrel loading station 3, the bottle holder loading station 5, the pen cap loading station 7 and the bottle holder loading station 9 take materials from the material tray 100 to the processing station 2. The number of materials taken at a time is at least two, and there is at least one material interval between the materials taken.

[0084] For example, the material placed in the material tray 100 on the side of the pen holder loading station 3 is a pen holder. The material placed in the material tray 100 on the side of the bottle holder loading station 5 is a bottle holder. The material placed in the material tray 100 on the side of the pen cap loading station 7 is a pen cap.

[0085] Further, the material slots 101 on the material tray 100 are arranged in multiple rows, and each row is compactly distributed with multiple material slots 101. The number of material slots 101 in each row is preferably set to 20, which can of course be selected according to actual needs.

[0086] Furthermore, the pen barrel loading station 3, the cassette bottle holder loading station 5, the pen cap loading station 7 and the cassette bottle loading station 9 are all manipulators, which can grab the materials on the corresponding material tray 100 and load them to the processing station 2. When taking materials, first take out the materials in 1 and 3 of the first row of material slots 101, then take out the materials in 2 and 4, and then take out the materials in 5 and 7, and take out one material each time, so that the manipulator has enough space to take materials, which is convenient for taking materials.

[0087] In one embodiment, see Figures 9 and 10 The pen holder detection station 4 includes a bracket 41, an upper detection component 42 and a lower detection component 43. In the height direction, the upper detection component 42 is arranged on the upper part of the bracket 41, and the lower detection component 43 is arranged on the lower part of the bracket 41. There is a gap between the upper detection component 42 and the lower detection component 43 for the processing station 2 to enter.

[0088] Among them, the upper detection component 42 includes an upper mounting frame 421, a first lifting drive component 422, a detection rod 423, a pressure block 424 and a detection sensor 425. The first lifting drive component 422 is arranged on the bracket 41 and is connected to the upper mounting frame 421; the detection rod 423 is inserted into the upper mounting frame 421 so as to be movable up and down, and the pressure block 424 is arranged at the bottom of the detection rod 423.

[0089] Among them, the lower detection component 43 includes a lower mounting frame 431, a second lifting drive component 432, a moving rod 433, and a displacement sensor 434. The second lifting drive component 432 is arranged on the bracket 41 and is connected to the lower mounting frame 431; the moving rod 433 is arranged on the lower mounting frame 431 so as to be movable up and down, and the displacement sensor 434 is arranged on the top of the moving rod 433.

[0090] Exemplarily, the first lifting driving member 422 is a cylinder, the detection sensor 425 is a fiber optic sensor, an image sensor, a contact displacement sensor, etc. The second lifting driving member 432 is a cylinder, and the displacement sensor 434 is a contact displacement sensor.

[0091] In one embodiment, at least two pen barrel slots 21 are provided, at least two pen cap slots 22 are provided, and at least two cartridge bottle holder slots 23 are provided. In this embodiment, at least two pen barrel slots 21, pen cap slots 22, and cartridge bottle holder slots 23 are provided.

[0092] Exemplarily, the number of the above-mentioned detection rods 423, detection sensors 425, moving rods 433, and displacement sensors 434 are all set to correspond to the number of pen barrel slots 21, so that each product is individually detected.

[0093] See also Fig.11 In one embodiment, the pen holder forward screwing station 20 comprises a first screwing head 201, a first rotary drive member 202, a first coupling 203, a first torque detector, a second screwing head 205, a second rotary drive member 206, a second coupling 207 and a second torque detector. The first screwing head 201 is connected to the first rotary drive member 202 through the first coupling 203, and the first torque detector is arranged on the first coupling 203. The second screwing head 205 is connected to the second rotary drive member 206 through the second coupling 207, and the second torque detector is arranged on the second coupling 207. The first rotary drive member 202, the first torque detector, the second rotary drive member 206 and the second torque detector are electrically connected to the control unit respectively.

[0094] Exemplarily, the first rotation driving member 202 is a servo motor, and the second rotation driving member 206 is a servo motor. The first torque detecting member is a torque sensor, which is arranged on the first coupling 203. The second torque detecting member is a torque sensor, which is arranged on the first coupling 203.

[0095] See also Figure 12 to Figure 13In one embodiment, the laminating station 40 includes a laminating support 401, a pressing head 402 that can move up and down, a laminating driving member, a movable frame 403, a displacement monitoring member 404, and a pressure monitoring member 405. The laminating driving member is connected to the pressing head 402 and is used to drive the pressing head 402 to move up and down. The movable frame 403 is movably arranged on the laminating support 401. Along the moving direction of the movable frame 403, one end of the movable frame 403 is connected to the pressing head 402, and the other end is connected to the displacement monitoring member 404 and the pressure monitoring member 405.

[0096] Exemplarily, the pressing driving member is a cylinder, the displacement monitoring member 404 is a contact displacement sensor, and the pressure monitoring member 405 is a pressure sensor.

[0097] Furthermore, the syringe assembly system also includes a visual inspection station 91, a residual material inspection station 92 and a dust removal station 93. The visual inspection station 91 is used to take a photo to detect whether the scale of the workpiece to be unloaded is at zero. The residual material inspection station 92 is used to detect whether there are no unloaded workpieces on the processing station 2. The dust removal station 93 is used to perform dust removal operations on the processing station 2 after unloading. The visual inspection station 91, the residual material inspection station 92 and the dust removal station 93 are respectively electrically connected to the control unit.

[0098] For example, the visual inspection station 91 uses a micro camera, the residual material inspection station 92 uses an infrared sensor, and the dust removal station 93 uses a vacuum generator or an air pump.

[0099] Further, the unloading station 80 includes a good unloading device 81 and a bad unloading device 82. The good unloading device 81 is used to unload the workpieces to be unloaded whose scale is at zero position, and the bad unloading device 82 is used to unload the workpieces to be unloaded whose scale is not at zero position.

[0100] Exemplarily, both the good product unloading device 81 and the bad product unloading device 82 use manipulators, which are electrically connected to the control unit. The control unit determines whether the finished product meets the standard based on the image taken by the visual inspection station 91, and controls the corresponding manipulator to unload the product. The specific principle is the existing technology and will not be described in detail.

[0101] Exemplarily, the structures of the above-mentioned cartridge bottle holder detection station 6, pen cap detection station 8, cartridge bottle detection station 10, and pen barrel reset station 60 are consistent with the structure of the pen barrel detection station 4 without the lower detection component 43, and are not described in detail.

[0102] Exemplarily, the structure of the penholder reverse twisting station 50 is consistent with the structure of the penholder forward twisting station 20. In other embodiments, the penholder reverse twisting station 50 may also be provided with only one servo motor to drive the two twisting heads to rotate at the same time.

[0103] Exemplarily, the pre-assembly station 30 and the assembly station 70 both use robots.

[0104] See also Figures 1 to 4 In one embodiment, the syringe assembly process includes the following steps:

[0105] S1, pen loading and testing: the conveyor belt 1 drives the processing station 2 to move to the pen loading station 3, and the pen loading station 3 loads the pen onto the pen slot 21; then, the conveyor belt 1 drives the processing station 2 to move to the pen testing station 4, and the pen testing station 4 tests the height of the push rod in the pen;

[0106] S1.1, processing station 2 is located within the spacing between the upper detection component 42 and the lower detection component 43;

[0107] S1.2, the first lifting drive member 422 starts to drive the upper mounting frame 421 to move downward, the detection rod 423 moves downward synchronously with the upper mounting frame 421, the pressing block 424 contacts the top of the pen holder on the processing station 2 and pushes the detection rod 423 to move upward, the detection sensor 425 detects the upward movement of the detection rod 423, and determines that there is a pen holder on the processing station 2;

[0108] S1.3, the second lifting drive member 432 starts to drive the lower mounting frame 431 to move upward, the moving rod 433 and the lower mounting frame 431 move upward synchronously, and the displacement sensor 434 penetrates into the pen barrel from the bottom of the pen barrel on the processing station 2, and abuts against the push rod in the pen barrel to detect the height of the push rod.

[0109] S2, loading and testing of cassette bottle holders: the conveyor belt 1 drives the processing station 2 to move to the position of the cassette bottle holder loading station 5, and the cassette bottle holder loading station 5 loads the cassette bottle holder onto the cassette bottle holder slot 23; then, the conveyor belt 1 drives the processing station 2 to move to the position of the cassette bottle holder testing station 6, and the cassette bottle holder at the cassette bottle holder testing station 6 is tested for in-place status;

[0110] S3, pen cap loading and detection: the conveyor belt 1 drives the processing station 2 to move to the pen cap loading station 7, and the pen cap loading station 7 loads the pen cap onto the pen cap slot 22; then, the conveyor belt 1 drives the processing station 2 to move to the pen cap detection station 8, and the pen cap detection station 8 performs a detection on the pen cap in place;

[0111] S4, cartridge bottle loading and inspection: the conveyor belt 1 drives the processing station 2 to move to the cartridge bottle loading station 9, and the cartridge bottle loading station 9 loads the cartridge bottle on the processing station 2 onto the cartridge bottle holder in step S2; then, the conveyor belt 1 drives the processing station 2 to move to the cartridge bottle inspection station 10, and the cartridge bottle inspection station 10 inspects the height of the rubber stopper of the cartridge bottle;

[0112] S5, forward twisting of the pen holder: the conveyor belt 1 drives the processing station 2 to move to the pen holder forward twisting station 20, and the number of turns of the pen holder forward twisting is calculated according to the push rod height obtained in step S1 and the rubber plug height obtained in step S4, and the pen holder forward twisting station 20 forward twists the pen holder according to the calculated number of turns;

[0113] S5.1, the control unit calculates the number of turns required for each pen holder to be screwed in the forward direction according to the push rod height obtained in step S1 and the plug height obtained in step S4, and transmits the data to the first rotary drive member 202 and the second rotary drive member 206 accordingly;

[0114] S5.2. The first rotary drive member 202 drives the first screwing head 201 to rotate according to the number of turns of forward screwing required for the corresponding position of the pen shaft, thereby driving the pen shaft to be screwed forward; after being screwed into place, the first torque detection member detects the increase in torque and transmits a signal to the control unit, and the control unit controls the first rotary drive member 202 to stop; the second rotary drive member 206 drives the second screwing head 205 to rotate according to the number of turns of forward screwing required for the corresponding position of the pen shaft, thereby driving the pen shaft to be screwed forward; after being screwed into place, the second torque detection member detects the increase in torque and transmits a signal to the control unit, and the control unit controls the second rotary drive member 206 to stop.

[0115] S6, pre-assembling the pen holder and the cartridge bottle: the conveyor belt 1 drives the processing station 2 to move to the pre-assembly station 30, and the pre-assembly station 30 places the pen holder screwed in step S5 on the cartridge bottle in step S4;

[0116] S7, pressing the pen holder and the cartridge bottle: the conveyor belt 1 drives the processing station 2 to move to the pressing station 40, and the pressing station 40 applies pressure to the pen holder to press the pen holder and the cartridge bottle together. During the pressing process, the pressing force and the pressing position are simultaneously detected, and the pressing is stopped when the pressing force and the pressing position are both within the specified range;

[0117] The pressing driving member drives the pressing head 402 to move downward to apply pressure on the pen holder to press the pen holder and the cartridge bottle together. The pressing head 402 drives the movable frame 403 to move downward. The displacement monitoring member 404 and the pressure monitoring member 405 synchronously detect the displacement value and the pressure value in the pressing process according to the downward movement of the movable frame 403, and feed back to the control unit. After the control unit determines that the pressing force and the pressing position are both within the specified range, it controls the pressing driving member to stop, and the pressing operation ends.

[0118] S8, reverse twisting and resetting of the pen holder: the conveyor belt 1 drives the processing station 2 to move to the pen holder reverse twisting station 50, and the pen holder reverse twisting station 50 reversely twists the pen holder after the pressing is completed; then, the conveyor belt 1 drives the processing station 2 to move to the pen holder resetting station 60, and the pen holder resetting station 60 presses the button on the pen holder to reset the scale on the pen holder;

[0119] S9, assembling the pen holder and pen cap: the conveyor belt 1 drives the processing station 2 to move to the assembly station 70, and the assembly station 70 assembles the pen holder reset in step S8 on the processing station 2 onto the pen cap in step S3, and the assembly is completed;

[0120] S10, unloading: the conveyor belt 1 drives the processing station 2 to move to the unloading station 80, and the unloading station 80 unloads the workpiece assembled on the processing station 2;

[0121] S10.1, the conveyor belt 1 drives the processing station 2 to move to the position of the visual inspection station 91, the visual inspection station 91 takes a photo to inspect the workpiece to be unloaded on the processing station 2, and feeds back to the control unit whether the scale of the workpiece to be unloaded is at zero position;

[0122] S10.2, the conveyor belt 1 drives the processing station 2 to move to the position of the good product unloading device 81, and the good product unloading device 81 receives feedback from the control unit and unloads the workpiece to be unloaded whose scale on the processing station 2 is at zero position;

[0123] S10.3, the conveyor belt 1 drives the processing station 2 to move to the position of the defective product unloading device 82, and the defective product unloading device 82 receives feedback from the control unit and unloads the workpiece to be unloaded whose scale on the processing station 2 is not at the zero position.

[0124] S11, residual material detection: the conveyor belt 1 drives the processing station 2 after unloading to move to the residual material detection station 92, and the residual material detection station 92 detects whether there are any unloaded workpieces on the processing station 2; if residual material is detected, the material is unloaded; if no residual material is detected, the next step is continued;

[0125] S12, dust removal: the conveyor belt 1 drives the processing station 2 to move to the dust removal station 93, and the dust removal station 93 cleans the dust on the processing station 2.

[0126] Understandably, the pen barrel slot 21, the pen cap slot 22, and the cassette bottle holder slot 23 on the processing station 2 are all set in multiple numbers, so that multiple syringes can be processed at a time, thereby improving processing efficiency. However, since there are multiple workpieces to be processed at a time, after multiple steps of operation, the data required to screw the multiple workpieces will be slightly different. On this basis, in this embodiment, the number of detection parts in the pen barrel detection station 4 is set to correspond to the number of workpieces, and the number of detection heads in the cassette bottle detection station 10 is also set to correspond to the number of workpieces. Thus, the push rod height and the plug height of the cassette bottle are detected separately for each workpiece. Finally, the data required for each workpiece to be screwed forward are calculated separately based on these two data. The screwing head in the pen barrel forward screwing station 20 is also set to be driven by a separate rotating drive member to ensure that each pen barrel to be processed can be screwed accurately, improve the processing quality of the finished product, and improve the yield rate.

[0127] Secondly, multiple inspection stations were set up to distinguish between good and defective products during unloading, further improving the quality of the finished products.

[0128] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0129] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A syringe assembly process, characterized in that: The following steps are involved: S1, loading and testing of pen holders: loading the pen holders onto the processing station (2) of the conveyor belt (1), and testing the height of the push rod in the pen holder; S2, loading and testing of the cassette bottle holder: loading the cassette bottle holder onto the processing station (2) of the conveyor belt (1), and performing a check on the cassette bottle holder; S3, loading and testing the pen caps: loading the pen caps onto the processing station (2) of the conveyor belt (1), and testing the pen caps to see if they are in place; S4, loading and testing the cartridge: loading the cartridge onto the cartridge holder in step S2, and testing the height of the stopper of the cartridge; S5, forward twisting of the pen holder: according to the push rod height obtained in step S1 and the rubber plug height obtained in step S4, the number of turns of the pen holder forward twisting is calculated, and the pen holder is forward twisted according to the calculated number of turns; S6, pre-assembling the pen holder and the cartridge: placing the pen holder screwed in step S5 onto the cartridge in step S4; S7, pressing the pen holder and the cartridge bottle together: applying pressure on the pen holder to press the pen holder and the cartridge bottle together, and synchronously detecting the pressing force and the pressing position during the pressure application process, and stopping the pressing when the pressing force and the pressing position are both within a specified range; S8, reversely twisting and resetting the pen holder: reversely twisting the pen holder after the pressing is completed, and resetting the scale on the pen holder; S9, assembling the pen body and pen cap: assemble the pen body reset in step S8 onto the pen cap in step S3.

2. The syringe assembly process according to claim 1, characterized in that: The method is based on a syringe assembly system; the syringe assembly system comprises a conveyor belt (1), a processing station (2), a pen barrel loading station (3), a pen barrel detection station (4), a cartridge bottle holder loading station (5), a cartridge bottle holder detection station (6), a pen cap loading station (7), a pen cap detection station (8), a cartridge bottle loading station (9), a cartridge bottle detection station (10), a pen barrel forward screwing station (20), a pre-assembly station (30), a pressing station (40), a pen barrel reverse screwing station (50), a pen barrel reset station (60), an assembly station (70), a loading station (80) and a control unit; the processing station (2) is arranged in a plurality and is distributed at intervals on the conveyor belt (1); each of the processing stations (2) is respectively provided with a pen barrel slot (21), a pen cap slot (22) and a cartridge bottle holder slot (23); the conveyor belt (1) can rotate cyclically to drive the processing stations to move to different station positions.

3. The syringe assembly process according to claim 2, characterized in that: The syringe assembly process includes the following steps: S1, pen barrel loading and testing: the conveyor belt (1) drives the processing station (2) to move to the pen barrel loading station (3), and the pen barrel loading station (3) loads the pen barrel onto the pen barrel groove (21); then, the conveyor belt (1) drives the processing station (2) to move to the pen barrel testing station (4), and the pen barrel testing station (4) tests the height of the push rod in the pen barrel; S2, loading and testing of the cassette bottle holder: the conveyor belt (1) drives the processing station (2) to move to the cassette bottle holder loading station position, and the cassette bottle holder loading station loads the cassette bottle holder onto the cassette bottle holder slot (23); then, the conveyor belt (1) drives the processing station (2) to move to the cassette bottle holder testing station position, and the cassette bottle holder testing station performs an in-place test on the cassette bottle holder; S3, pen cap loading and detection: the conveyor belt (1) drives the processing station (2) to move to the pen cap loading station (7), and the pen cap loading station (7) loads the pen cap onto the pen cap groove (22); then, the conveyor belt (1) drives the processing station (2) to move to the pen cap detection station (8), and the pen cap detection station (8) performs a detection on the pen cap in place; S4, cartridge bottle loading and inspection: the conveyor belt (1) drives the processing station (2) to move to the cartridge bottle loading station (9), and the cartridge bottle loading station (9) loads the cartridge bottle on the processing station (2) onto the cartridge bottle holder in step S2; then, the conveyor belt (1) drives the processing station (2) to move to the cartridge bottle inspection station (10), and the cartridge bottle inspection station (10) inspects the height of the rubber stopper of the cartridge bottle; S5, forward twisting of the pen holder: the conveyor belt (1) drives the processing station (2) to move to the pen holder forward twisting station (20), and the number of turns of the pen holder forward twisting is calculated according to the push rod height obtained in step S1 and the rubber plug height obtained in step S4. The pen holder forward twisting station (20) twists the pen holder forward according to the calculated number of turns; S6, pre-assembling the pen holder and the cartridge bottle: the conveyor belt (1) drives the processing station (2) to move to the pre-assembly station (30), and the pre-assembly station (30) places the pen holder screwed in step S5 on the processing station (2) onto the cartridge bottle in step S4; S7, pressing the pen holder and the cartridge bottle together: the conveyor belt (1) drives the processing station (2) to move to the pressing station (40), and the pressing station (40) applies pressure to the pen holder to press the pen holder and the cartridge bottle together. During the pressing process, the pressing force and the pressing position are simultaneously detected, and the pressing is stopped when the pressing force and the pressing position are both within a specified range; S8, reverse twisting and resetting of the pen holder: the conveyor belt (1) drives the processing station (2) to move to the pen holder reverse twisting station (50), and the pen holder reverse twisting station (50) reversely twists the pen holder after the pressing is completed; then, the conveyor belt (1) drives the processing station (2) to move to the pen holder resetting station (60), and the pen holder resetting station (60) resets the scale on the pen holder; S9, assembling the pen body and the pen cap: the conveyor belt (1) drives the processing station (2) to move to the assembly station (70), and the assembly station (70) assembles the pen body reset in step S8 on the processing station (2) onto the pen cap in step S3, and the assembly is completed; S10, unloading: the conveyor belt (1) drives the processing station (2) to move to the unloading station (80), and the unloading station (80) unloads the workpiece assembled on the processing station (2).

4. The syringe assembly process according to claim 3, characterized in that: The pen barrel loading station (3), the cassette bottle holder loading station, the pen cap loading station (7) and the cassette bottle loading station (9) are respectively provided with material trays (100) on their sides, and each of the material trays (100) is respectively provided with a plurality of material slots (101); the pen barrel loading station (3), the cassette bottle holder loading station, the pen cap loading station (7) and the cassette bottle loading station (9) respectively take materials from the material trays (100) to the processing station (2), the number of materials taken at a time is at least two, and there is at least one material interval between the taken materials.

5. The syringe assembly process according to claim 3, characterized in that: The penholder detection station (4) comprises a bracket (41), an upper detection component (42) and a lower detection component (43); in the height direction, the upper detection component (42) is arranged on the upper part of the bracket (41), and the lower detection component (43) is arranged on the lower part of the bracket (41); there is a spacing between the upper detection component (42) and the lower detection component (43) for the processing station (2) to enter; The upper detection component (42) comprises an upper mounting frame (421), a first lifting driving member (422), a detection rod (423), a pressure block (424) and a detection sensor (425); the first lifting driving member (422) is arranged on the bracket (41) and connected to the upper mounting frame (421); the detection rod (423) is arranged on the upper mounting frame (421) so as to be movable up and down; and the pressure block (424) is arranged at the bottom of the detection rod (423); The lower detection component (43) comprises a lower mounting frame (431), a second lifting driving member (432), a moving rod (433), and a displacement sensing member (434); the second lifting driving member (432) is arranged on the bracket (41) and connected to the lower mounting frame (431); the moving rod (433) is arranged on the lower mounting frame (431) so as to be movable up and down; and the displacement sensing member (434) is arranged on the top of the moving rod (433); The steps of detecting the height of the push rod in the pen holder by the pen holder detection station (4) in step S1 are as follows: S1.1, the processing station (2) is located within the spacing between the upper detection component (42) and the lower detection component (43); S1.2, the first lifting drive member (422) starts to drive the upper mounting frame (421) to move downward, the detection rod (423) and the upper mounting frame (421) move downward synchronously, the pressing block (424) contacts the top of the pen holder on the processing station (2) and pushes the detection rod (423) to move upward, the detection sensor (425) detects the upward movement of the detection rod (423), and determines that there is a pen holder on the processing station (2); S1.3, the second lifting drive member (432) starts to drive the lower mounting frame (431) to move upward, and the moving rod (433) and the lower mounting frame (431) move upward synchronously, and the displacement sensor (434) penetrates into the pen barrel from the bottom of the pen barrel on the processing station (2), and abuts against the push rod in the pen barrel to detect the height of the push rod.

6. The syringe assembly process according to claim 3, characterized in that: The number of the penholder slots (21) is at least two; the penholder forward screwing station (20) comprises a first screwing head (201), a first rotary drive member (202), a first coupling (203), a first torque detector, a second screwing head (205), a second rotary drive member (206), a second coupling (207) and a second torque detector; the first screwing head (201) is connected to the first rotary drive member (202) via the first coupling (203), and the first torque detector is arranged on the first coupling (203); the second screwing head (205) is connected to the second rotary drive member (206) via the second coupling (207), and the second torque detector is arranged on the second coupling (207); the first rotary drive member (202), the first torque detector, the second rotary drive member (206) and the second torque detector are respectively electrically connected to the control unit; The steps of forwardly twisting the pen holder in step S5 are as follows: S5.1, the control unit calculates the number of turns required for each pen holder to be screwed in the forward direction according to the push rod height obtained in step S1 and the plug height obtained in step S4, and transmits the data to the first rotary drive member (202) and the second rotary drive member (206) accordingly; S5.

2. The first rotary drive member (202) drives the first screwing head (201) to rotate according to the number of turns required for the pen shaft at the corresponding position to be screwed in the forward direction, thereby driving the pen shaft to be screwed in the forward direction; after being screwed in place, the first torque detection member detects the increase in torque and transmits a signal to the control unit, and the control unit controls the first rotary drive member (202) to stop; the second rotary drive member (206) drives the second screwing head (205) to rotate according to the number of turns required for the pen shaft at the corresponding position to be screwed in the forward direction, thereby driving the pen shaft to be screwed in the forward direction; after being screwed in place, the second torque detection member detects the increase in torque and transmits a signal to the control unit, and the control unit controls the second rotary drive member (206) to stop.

7. The syringe assembly process according to claim 3, characterized in that: The laminating station (40) comprises a laminating support (401), a pressing head (402) that can move up and down, a laminating driving component, a movable frame (403), a displacement monitoring component (404) and a pressure monitoring component (405); the laminating driving component is connected to the pressing head (402) and is used to drive the pressing head (402) to move up and down; the movable frame (403) is movably arranged on the laminating support (401); along the moving direction of the movable frame (403), one end of the movable frame (403) is connected to the pressing head (402), and the other end is connected to the displacement monitoring component (404) and the pressure monitoring component (405); The steps of pressing the pen shaft and the cartridge bottle in step S7 are as follows: the pressing drive component drives the pressure head (402) to move downward to apply pressure on the pen shaft to press the pen shaft and the cartridge bottle, the pressure head (402) drives the movable frame (403) to move downward, the displacement monitoring component (404) and the pressure monitoring component (405) synchronously detect the displacement value and the pressure value in the pressing process according to the downward movement of the movable frame (403), and feed back to the control unit, after the control unit determines that the pressing force and the pressing position are both within the specified range, it controls the pressing drive component to stop, and the pressing operation ends.

8. The syringe assembly process according to claim 3, characterized in that: The syringe assembly system further comprises a visual inspection station (91), a residual material inspection station (92) and a dust removal station (93), wherein the visual inspection station (91) is used to take photos to detect whether the scale of the workpiece to be unloaded is at zero; the residual material inspection station (92) is used to detect whether there are no unloaded workpieces on the processing station (2); and the dust removal station (93) is used to perform dust removal operations on the processing station (2) after unloading is completed.

9. The syringe assembly process according to claim 8, characterized in that: The unloading station (80) comprises a good product unloading device (81) and a bad product unloading device (82), wherein the good product unloading device (81) is used to unload workpieces to be unloaded whose scale is at zero position, and the bad product unloading device (82) is used to unload workpieces to be unloaded whose scale is not at zero position; Step S10 includes the following steps: S10.1, the conveyor belt (1) drives the processing station (2) to move to the position of the visual inspection station (91), the visual inspection station (91) takes a photo to inspect the workpiece to be unloaded on the processing station (2), and feeds back to the control unit whether the scale of the workpiece to be unloaded is at zero position; S10.2, the conveyor belt (1) drives the processing station (2) to move to the position of the good product unloading device (81), and the good product unloading device (81) receives feedback from the control unit and unloads the workpiece to be unloaded whose scale on the processing station (2) is at zero position; S10.3, the conveyor belt (1) drives the processing station (2) to move to the position of the defective product unloading device (82), and the defective product unloading device (82) receives feedback from the control unit and unloads the workpiece to be unloaded whose scale on the processing station (2) is not at the zero position.

10. The syringe assembly process according to claim 9, characterized in that: The syringe assembly process also includes the following steps: S11, residual material detection: the conveyor belt (1) drives the processing station (2) after unloading to move to the residual material detection station (92), and the residual material detection station (92) detects whether there are any unloaded workpieces on the processing station (2); if residual material is detected, the material is unloaded; if no residual material is detected, the next step is continued; S12, dust removal: the conveyor belt (1) drives the processing station (2) to move to the dust removal station (93), and the dust removal station (93) cleans the dust on the processing station (2).

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