A correction assembly method and correction assembly device

Abstract

The present application relates to a kind of correction assembly method and correction assembly device, for correcting and assembling medicine needle, and include the following steps: obtaining medicine needle in preassembled state;While applying rotating correction force and pressing correction force to medicine needle in preassembled state;Wherein, under the action of rotating correction force, needle seat assembly and barrel sleeve assembly have the movement tendency of relative rotation around axis;Under the action of pressing correction force, needle seat assembly and barrel sleeve assembly have the movement tendency of mutual approach along axis.The above-mentioned correction assembly method, using the structural characteristics of medicine needle, uses mechanical automatic position correction means to correct and assemble.Needle seat assembly and barrel sleeve assembly will automatically relative rotate and relatively move to the state of angle accurate, assembly in place under the action of rotating correction force and pressing force.In this way, after correction by correction assembly method, the matching angle accuracy of needle seat assembly and barrel sleeve assembly is improved, and the assembly qualified rate of medicine needle is also improved accordingly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical consumable production, in particular to a correction assembly method and correction assembly device. BACKGROUND

[0002] The medicine needle is a medical consumable for injecting medicine, such as an insulin needle for injecting insulin, a reagent injection needle, a cosmetic needle, etc. The medicine needle is widely used in the medical field and has a huge demand. Therefore, the automatic assembly of the medicine needle is particularly important for the large-scale production of the medicine needle. Taking the medicine needle for injecting insulin as an example, the medicine needle comprises a barrel sleeve assembly and a needle seat assembly, wherein the barrel sleeve assembly comprises a protective sleeve and a barrel sleeve. The barrel sleeve assembly and the needle seat assembly are matched by a guide rib and a guide groove, and the protective sleeve and the barrel sleeve are matched by a clamping part and a matching part. For the assembly of the medicine needle, the angle between the parts should be as accurate as possible, so that qualified products can be obtained.

[0003] However, in the related art, the barrel sleeve assembly or the needle seat assembly cannot be screened in a specific direction through the feeding process, and the structure of the medicine needle is relatively small, so it is difficult to ensure the assembly angle between the barrel sleeve assembly and the needle seat assembly during the assembly process, and the medicine needle cannot be positioned at one time. Therefore, the medicine needle finally assembled may have the problem of inaccurate assembly angle between the barrel sleeve assembly and the needle seat assembly, which affects the assembly qualification rate of the product. At present, the technical means of CCD visual identification and angle correction is generally used, which detects and corrects the angle of the barrel sleeve assembly and the needle seat assembly before assembly. This scheme has high cost and needs to additionally increase the CCD detection and correction device, making the equipment structure more complex. SUMMARY

[0004] Therefore, it is necessary to provide a correction assembly method and correction assembly device to solve the problem that the barrel sleeve assembly and the needle seat assembly cannot be positioned at one time in the related art, and to improve the assembly qualification rate of the medicine needle.

[0005] To solve the above problems, on the one hand, the present application provides a correction assembly method for correcting and assembling a medicine needle, wherein the medicine needle comprises a needle seat assembly and a barrel sleeve assembly, the needle seat assembly is at least partially coaxially sleeved in the barrel sleeve assembly, one of the needle seat assembly and the barrel sleeve assembly is configured with a guide rib, and the other is configured with a guide groove matched with the guide rib, and the correction assembly method comprises the following steps:

[0006] S10: obtaining the medicine needle in a pre-assembly state;

[0007] S20: simultaneously applying a rotation correction force and a compression correction force to the medicine needle in the pre-assembly state;

[0008] Under the action of the rotation correction force, the needle seat assembly and the barrel sleeve assembly have a movement tendency of relative rotation around the axial direction; under the action of the compression correction force, the needle seat assembly and the barrel sleeve assembly have a movement tendency of moving towards each other along the axial direction, so as to correct the relative position between the barrel sleeve assembly and the needle seat assembly and complete the assembly.

[0009] Compared with the prior art, the technical effects achieved by the technical scheme are as follows: the above-mentioned correction and assembly method can utilize the structural characteristics of the medicament needle itself and adopt a mechanical automatic position correction means to correct and assemble. For the medicament needle in the pre-assembly state, if the assembly angle of the needle seat assembly and the barrel sleeve assembly is not aligned, the needle seat assembly and the barrel sleeve assembly will automatically rotate and move relative to each other to the state of accurate angle and assembly in place under the action of the rotation correction force and the compression correction force. In this way, after the correction and assembly method is used for correction, the accuracy of the assembly angle of the needle seat assembly and the barrel sleeve assembly is improved, and the assembly qualification rate of the medicament needle is also improved. In addition, the correction and assembly method does not need to be detected and judged by a detection device in advance, but directly corrects and assembles, and the automatic correction method is simple and efficient.

[0010] In one of the embodiments, the step S20 comprises:

[0011] S21: simultaneously applying a first rotation correction force and a compression correction force to the medicament needle in the pre-assembly state;

[0012] S22: simultaneously applying a second rotation correction force and a compression correction force to the medicament needle in the pre-assembly state;

[0013] The directions of the first rotation correction force and the second rotation correction force are opposite.

[0014] Compared with the prior art, the technical effects achieved by the technical scheme are as follows: the first rotation correction force and the second rotation correction force are applied in opposite directions in sequence, which can avoid the problem of inaccurate correction that may exist in a single direction of rotation correction. After two directions of correction, the angle alignment between the needle seat assembly and the barrel sleeve assembly can be ensured more accurately and installed in place.

[0015] In one of the embodiments, the first rotation correction force and the second rotation correction force are both fixed values.

[0016] Compared with the prior art, the technical effects achieved by the technical scheme are as follows: the rotation correction force of the fixed value size is equivalent to the judgment standard of whether the assembly of the needle seat assembly and the barrel sleeve assembly is in place, and the medicament needle in the pre-assembly state that does not meet the assembly standard will rotate under the driving of the rotation correction force. The medicament needle in the pre-assembly state that is installed in place can not be affected by the rotation correction force.

[0017] In one embodiment, after the step S20, further comprising:

[0018] S31, drive the needle seat assembly and the barrel sleeve assembly away from each other along the axial direction, and rotate N times around the axial direction, N is a positive integer;

[0019] S32, drive the needle seat assembly and the barrel sleeve assembly to be close to each other along the axial direction to be assembled together.

[0020] Compared with the prior art, the technical effects achieved by adopting the technical scheme are: after ensuring the angle between the needle seat assembly and the barrel sleeve assembly, driving the two away from each other, the guide ribs and the guide grooves are separated from each other, and the needle seat assembly and the barrel sleeve assembly can rotate relative to each other again. At this time, driving the needle seat assembly and the barrel sleeve assembly to rotate relative to each other will drive the positioning springs connected to the needle seat assembly and the barrel sleeve assembly at two ends to twist, achieving the effect of increasing the torsion of the positioning spring. The elastic force of the positioning spring after increasing the torsion is enhanced, so that it can meet the elastic triggering requirement of the protective sleeve. Only when the size of the external force reaches a certain degree, the protective sleeve can be triggered by overcoming the elastic force.

[0021] In one embodiment, before the step S10, further comprising:

[0022] S41: detecting whether the clamping part of the protective sleeve in the barrel sleeve assembly cooperates with the guide rib constructed on the barrel sleeve;

[0023] S42: if the clamping part cooperates with the guide rib, driving the barrel sleeve and the protective sleeve away from each other along the axial direction, and rotating relative to each other around the axial direction by a first set angle, and driving the barrel sleeve and the protective sleeve to be close to each other along the axial direction to be assembled together; if the clamping part does not cooperate with the guide rib, no action is taken.

[0024] Compared with the prior art, the technical effects achieved by adopting the technical scheme are: the assembly relationship between the protective sleeve and the barrel sleeve can be verified and corrected in a simple way, and the assembly qualification rate of the medicament needle is improved.

[0025] In one embodiment, after the step S42, further comprising:

[0026] S60: driving the protective sleeve and the barrel sleeve to rotate relative to each other by a second set angle.

[0027] Compared with the prior art, the technical effects achieved by adopting the technical scheme are: after rotating by a certain angle, the clamping part and the cooperating part of the protective sleeve and the barrel sleeve are clamped with each other, and the positioning of the protective sleeve and the barrel sleeve is completed. At this time, the protective sleeve can accurately stretch and contract.

[0028] In another aspect, the present application also provides a correction assembly device for correcting and assembling the medicine needle in the pre-assembly state by using the correction and assembly method.

[0029] a driving assembly;

[0030] a clamping assembly, the clamping assembly comprising a first clamping member and a second clamping member arranged at intervals, the first clamping member being configured to clamp the needle seat assembly, and the second clamping member being configured to clamp the barrel sleeve assembly; at least one of the first clamping member and the second clamping member is in transmission connection with the driving assembly;

[0031] The driving assembly is capable of driving the first clamping member and the second clamping member to rotate relative to each other and to move relative to each other at the same time.

[0032] Compared with the prior art, the correction and assembly device can drive the first clamping member and the second clamping member to rotate relative to each other and to move relative to each other at the same time by using the driving assembly to generate a rotating correction force and a pressing correction force, thereby realizing the correction and assembly method, correcting and assembling the medicine needle in the pre-assembly state, and obtaining the medicine needle with the angle alignment and the installation in place. In addition, the material structure of the medicine needle is usually small and not convenient for manual operation, and manual operation is more likely to cause the workers to be pricked in the operation process. Therefore, the correction and assembly by using the correction and assembly device can reduce the use of the CCD equipment, is lower in cost, and is simpler, more efficient and safer.

[0033] In one embodiment, the driving assembly is capable of driving the first clamping member and the second clamping member to rotate relative to each other along a first turning direction;

[0034] The driving assembly is also capable of driving the first clamping member and the second clamping member to rotate relative to each other along a second turning direction;

[0035] The first turning direction is opposite to the second turning direction.

[0036] Compared with the prior art, the correction and assembly device can correct and assemble the medicine needle in the pre-assembly state by using the correction and assembly method, and the medicine needle in the pre-assembly state receives the correction from two opposite turning directions, which can more ensure the angle alignment and installation in place between the needle seat assembly and the barrel sleeve assembly.

[0037] In one embodiment, the driving assembly is a servo motor with a torque mode.

[0038] Alternatively, the driving assembly (251) is an elastic connecting member, a magnetic attraction connecting member or a driving source with a rated torque.

[0039] Compared with the prior art, the technical effects achieved by adopting the technical scheme are as follows: the servo motor with the fixed-torque mode or the elastic connecting piece, the magnetic attraction connecting piece and the driving source with the rated torque can output the rotary correction force with a fixed value, and the rotary correction force with the fixed size is taken as the accurate judgment standard, and the medicine needle in the pre-assembly state that does not reach the assembly standard will rotate under the driving of the rotary correction force and automatically complete the accurate assembly when the needle seat assembly and the barrel sleeve assembly are rotated to the angle alignment under the action of the compression correction force.

[0040] In one of the embodiments, the correction assembly device further comprises a detection assembly and an adjusting assembly, the detection assembly is configured to detect the cooperation between the clamping part of the protective sleeve in the barrel sleeve assembly and the guide rib configured on the barrel sleeve;

[0041] The adjusting assembly comprises a main body, a positioning mechanism and an adjusting mechanism, the positioning mechanism is fixedly connected to the main body and is configured to clamp the barrel sleeve, and the adjusting mechanism is drivingly connected to the main body and is configured to clamp the protective sleeve, and the adjusting mechanism can rotate relative to the positioning mechanism and move relative to the positioning mechanism under the driving of the main body.

[0042] Compared with the prior art, the technical effects achieved by adopting the technical scheme are as follows: the problems can be found in time through the detection assembly, and the adjustment is performed through the adjusting device, which helps to improve the assembly qualified rate of the medicine needle.

[0043] In summary, the above-mentioned various embodiments of the present application can have one or more of the following advantages or beneficial effects:

[0044] 1. The structure characteristics of the insulin needle itself can be utilized to perform the correction assembly by using the mechanical means. Under the action of the rotary correction force and the compression force, the needle seat assembly and the barrel sleeve assembly of the medicine needle in the pre-assembly state are automatically ensured to be aligned and installed in place. The medicine needle in the pre-assembly state does not need to be detected and judged by the detection equipment in advance, but is directly subjected to the correction assembly, and the method is simple and efficient.

[0045] 2. The assembly work of the insulin needle can be automatically realized, and the assembly is efficient, accurate and has a high qualified rate.

[0046] 3. The parts for automatically correcting and assembling the medicine needle are used to replace the manual assembly, and the assembly accuracy, efficiency and safety are improved. BRIEF DESCRIPTION OF DRAWINGS

[0047] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is one of the flowcharts illustrating the calibration and assembly method in one embodiment of the present invention;

[0049] Figure 2 This is a second schematic flowchart of the calibration assembly method in one embodiment of the present invention;

[0050] Figure 3 This is a third schematic flowchart of the calibration assembly method in one embodiment of the present invention;

[0051] Figure 4 This is a fourth schematic flowchart of the calibration assembly method in one embodiment of the present invention;

[0052] Figure 5 This is a fourth schematic flowchart of the calibration assembly method in one embodiment of the present invention;

[0053] Figure 6 This is a schematic diagram of the pre-installed device in one embodiment of the present invention;

[0054] Figure 7 for Figure 6 A partially enlarged schematic diagram of the pre-assembled device at point A;

[0055] Figure 8 for Figure 6 The front view of the pre-assembled device shown;

[0056] Figure 9 This is a schematic diagram of the spring assembly device in one embodiment of the present invention;

[0057] Figure 10 for Figure 9 A partially enlarged schematic diagram of the spring assembly device at point B;

[0058] Figure 11 for Figure 9 The front view of the spring assembly shown;

[0059] Figure 12 This is a schematic diagram of the structure of the calibration assembly device in one embodiment of the present invention;

[0060] Figure 13 for Figure 12 An enlarged schematic diagram of the calibration assembly device at point C;

[0061] Figure 14 Fig. 2 shows a side view of the correction assembling device; Figure 12 Fig. 3 shows a front view of the correction assembling device.

[0062] Figure 15 Fig. 4 shows a front view of the correction assembling device. Figure 12 Fig. 5 shows a front view of the correction assembling device.

[0063] 10, barrel sleeve assembly; 30, needle seat assembly; 50, adjusting spring; 210, pre-assembly device; 211, fixing mechanism; 213, assembling mechanism; 230, spring assembling device; 231, spring taking member; 233, spring clamping member; 250, correction assembling device; 251, driving assembly; 253, clamping assembly; 2531, first clamping member; 2533, second clamping member. DETAILED DESCRIPTION

[0064] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details. In other instances, well-known process steps have not been described in detail in order to avoid obscuring the present application. Accordingly, the specific embodiments disclosed below do not define or constrain the scope of the present application.

[0065] In the description of the present application, it should be understood that the terms "length", "upper", "lower", "front", "vertical", "horizontal", "bottom", "inner", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0066] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0067] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a mediating element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or a mediating element can be present at the same time.

[0069] Please refer to Figure 13 The present application relates to a medicament needle, which comprises a barrel sleeve assembly 10 and a needle seat assembly 30, and the needle seat assembly 30 is at least partially coaxially sleeved in the barrel sleeve assembly 10. One of the needle seat assembly 30 and the barrel sleeve assembly 10 is configured with a guide rib, and the other is configured with a guide groove matched with the guide rib, and the guide rib extends in the axial direction. The matched guide rib and guide groove limit the needle seat assembly 30 and the barrel sleeve assembly 10, so that the needle seat assembly 30 and the barrel sleeve assembly 10 cannot rotate relative to the axial direction of the medicament needle.

[0070] Specifically, the needle seat assembly 30 is configured with a guide groove, and the barrel sleeve assembly 10 is configured with a guide rib, and both the guide rib and the guide groove can be multiple, the guide groove can be formed by adjacent guide pieces, and the guide rib can be matched by being clamped between two adjacent guide pieces.

[0071] In an embodiment, the medicament needle can be a safety insulin needle for injecting insulin medicament, and it can be understood that in other embodiments, the medicament needle can also be a medical needle for injecting other drugs, such as a reagent injection needle, a cosmetic needle, etc., which is not limited here.

[0072] Further, the barrel sleeve assembly 10 comprises a barrel sleeve and a protective sleeve which are coaxially sleeved. The protective sleeve is configured with a clamping portion, and the barrel sleeve is configured with a matching portion, and both the clamping portion and the matching portion extend in the axial direction of the medicament needle, which can limit the barrel sleeve and the protective sleeve in the axial rotation direction, and at the same time can allow and guide the protective sleeve to slide along the guide rib to complete the telescopic action. The clamping portion and the matching portion can be matched clamping grooves, rib strips, etc.

[0073] The medicine needle further comprises a position adjusting spring 50 and a spring lock. The spring lock is arranged in the barrel assembly 10, and the position adjusting spring 50 is connected between the needle seat assembly 30 and the barrel assembly 10. Specifically, one end of the position adjusting spring 50 is connected to the barrel assembly 10 through the spring lock, and the other end is connected to the needle seat assembly 30.

[0074] The spring lock is configured with a sliding protrusion in the axial direction, which abuts against the guide rib of the barrel assembly 10 and can slide along the guide rib. In other words, after the spring lock is accurately positioned in the angle position, it can slide along the axial direction of the barrel assembly 10 while being limited in the turning direction.

[0075] The spring lock abuts against the protective sleeve and provides an elastic force to drive and maintain the protective sleeve to protrude relative to the barrel and be in the protection state. When the protective sleeve is subjected to an external force which is sufficient to overcome the elastic force, the protective sleeve pushes the spring lock to slide along the guide rib and retract into the barrel to switch to the injection state, in which the needle in the needle seat assembly 30 is exposed.

[0076] As described in the background, during the assembly of the medicine needle, the medicine needle is actually in a pre-assembly state after the needle seat assembly 30 and the barrel assembly 10 are assembled due to the small structure of the medicine needle. The medicine needle in the pre-assembly state cannot guarantee the accurate angle between the needle seat assembly 30 and the barrel assembly 10, and needs to be corrected and assembled to improve the qualification rate of the final medicine needle.

[0077] Please refer to Figure 1 An embodiment of the present application provides a correction assembly method for correcting and assembling the medicine needle described above, which comprises the following steps:

[0078] S10: obtaining a medicine needle in a pre-assembly state;

[0079] S20: simultaneously applying a rotation correction force and a compression correction force to the medicine needle in the pre-assembly state;

[0080] Under the action of the rotation correction force, the needle seat assembly 30 and the barrel assembly 10 have a movement trend of relative rotation around the axial direction; under the action of the compression correction force, the needle seat assembly 30 and the barrel assembly 10 have a movement trend of approaching each other along the axial direction, so as to correct the relative position between the barrel assembly and the needle seat assembly 30 and complete the assembly.

[0081] As mentioned above, the pre-assembled syringe needle refers to the syringe needle in which the needle hub assembly 30 and the barrel sleeve assembly 10 have been pre-assembled, but the full assembly steps have not been completed, and the angle between the barrel sleeve assembly 10 and the needle hub assembly 30 cannot be guaranteed to be accurate. In other words, the pre-assembled syringe needle cannot guarantee that the guide ribs are clamped into the guide grooves, and correction assembly is required.

[0082] The rotation correction force and the compression correction force are applied to the pre-assembled syringe needle at the same time, and the needle hub assembly 30 and the barrel sleeve assembly 10 have a relative rotation movement tendency under the driving of the rotation correction force. Among them, the rotation correction force generates a rotation torque in the axial direction, and the direction of the compression correction force is from one of the needle hub assembly 30 and the barrel sleeve assembly 10 to the other. The rotation correction force and the compression correction force are applied to at least one of the needle hub assembly 30 and the barrel sleeve assembly 10 as a driving force that can make the two rotate or move in the desired direction, and whether rotation or movement actually occurs also depends on whether the needle hub assembly 30 and the barrel sleeve assembly 10 are aligned and assembled in place.

[0083] If the needle hub assembly 30 and the barrel sleeve assembly 10 in the pre-assembled syringe needle are angularly aligned and assembled in place, the guide ribs are clamped into the guide grooves, and the guide ribs and the guide grooves that cooperate with each other limit the relative rotation of the needle hub assembly 30 and the barrel sleeve assembly 10 in the axial direction. At this time, the rotation correction force cannot actually drive the two to rotate relative to each other, and the compression correction force cannot drive the needle hub assembly 30 and the barrel sleeve assembly 10 that have been assembled in place to continue to move closer in the axial direction.

[0084] If the needle hub assembly 30 and the barrel sleeve assembly 10 in the pre-assembled syringe needle are not aligned and assembled in place, the guide ribs are not clamped into the guide grooves, and under the limitation of the guide ribs and the guide grooves, the rotation correction force can drive the needle hub assembly 30 and the barrel sleeve assembly 10 to actually rotate. In other words, if the needle hub assembly 30 and the barrel sleeve assembly 10 can rotate relative to each other under the action of the rotation correction force, it means that the two are not angularly aligned. At this time, when the needle hub assembly 30 and the barrel sleeve assembly 10 are rotated to be angularly aligned, the needle hub assembly 30 and the barrel sleeve assembly 10 can also move closer to each other under the action of the compression correction force, until the guide ribs are clamped into the guide grooves, and the needle hub assembly 30 and the barrel sleeve assembly 10 are assembled in place.

[0085] In other words, for the pre-assembled syringe needle that is assembled in place, the rotation correction force and the compression correction force do not change, and for the pre-assembled syringe needle that is not assembled in place, the needle seat assembly 30 rotates relative to the barrel sleeve assembly 10 under the action of the rotation correction force, and when the angle is aligned, the accurate assembly is automatically completed under the action of the compression correction force. Therefore, whether the assembly between the needle seat assembly 30 and the barrel sleeve assembly 10 is accurate or not does not need to output the result, but under the action of the rotation correction force and the compression correction force, the correction assembly is automatically completed to ensure that the angle of the needle seat assembly 30 and the barrel sleeve assembly 10 of the pre-assembled syringe needle is accurate after correction, and the assembly is in place.

[0086] The above correction assembly method can use the structural characteristics of the syringe needle itself to correct the assembly by using a mechanical automatic position correction means. For the pre-assembled syringe needle, if the assembly angle of the needle seat assembly 30 and the barrel sleeve assembly 10 is not aligned, the needle seat assembly 30 and the barrel sleeve assembly 10 will automatically rotate and move relative to each other to the state of accurate angle and assembly in place under the action of the rotation correction force and the compression force. In this way, after the correction assembly method is corrected, the matching angle accuracy of the needle seat assembly 30 and the barrel sleeve assembly 10 is improved, and the assembly qualification rate of the syringe needle is also improved. In addition, the correction assembly method does not need to be detected and judged by a detection device in advance, but directly corrects the assembly, and the automatic correction method is simple and efficient.

[0087] Please refer to Figure 2 , further, step S20, i.e. the step of simultaneously applying a rotation correction force and a compression correction force to the pre-assembled syringe needle, comprises:

[0088] S21: simultaneously applying a first rotation correction force and a compression correction force to the pre-assembled syringe needle;

[0089] S22: simultaneously applying a second rotation correction force and a compression correction force to the pre-assembled syringe needle;

[0090] Among them, the directions of the first rotation correction force and the second rotation correction force are opposite.

[0091] The two rotation correction forces in opposite directions can make the needle seat assembly 30 and the barrel sleeve assembly 10 have the movement trend of rotating relative to each other around the axis in opposite two directions.

[0092] The first rotation correction force and the second rotation correction force are both rotation torques applied to the pre-assembled syringe needle, and the torque directions of the two are collinear but opposite. Under the action of the first rotation correction force and the second rotation correction force, the needle seat assembly 30 and the barrel sleeve assembly 10 respectively generate the movement trend of rotating clockwise around the axis and the movement trend of rotating counterclockwise around the axis.

[0093] The first rotation correction force and the second rotation correction force are applied in opposite directions, which can avoid the problem of inaccurate correction that may exist in a single direction rotation correction force. After the correction of the two rotation correction forces, the angular alignment between the needle seat assembly 30 and the barrel sleeve assembly 10 can be more ensured, and the installation is in place.

[0094] Further, in step S20, the size of the rotation correction force is a fixed value. It can be understood that the size of the first rotation correction force and the second rotation correction force are both fixed values.

[0095] The size of the fixed value should meet the requirement that the rotation correction force is sufficient to drive the relative rotation of the needle seat assembly 30 and the barrel sleeve assembly 10 when they are misaligned in the pre-assembled state, and insufficient to drive the relative rotation of the needle seat assembly 30 and the barrel sleeve assembly 10 when they are aligned in the pre-assembled state, so as to avoid forcibly rotating and damaging the needle seat assembly 30 and the barrel sleeve assembly 10.

[0096] The rotation correction force with a fixed value size is equivalent to the judgment standard of whether the needle seat assembly 30 and the barrel sleeve assembly 10 are assembled in place. Any pre-assembled drug needle that does not meet the assembly standard will rotate under the driving of the rotation correction force. The pre-assembled drug needle that is installed in place can not be affected by the rotation correction force. The fixed value can be, but is not limited to, 0.2 N·m.

[0097] In other embodiments, the size of the rotation correction force can also gradually increase. In step S20, while the rotation correction force is applied, it is detected whether the needle seat assembly 30 and the barrel sleeve assembly 10 rotate relative to each other, and the size of the rotation correction force is detected. If the needle seat assembly 30 and the barrel sleeve assembly 10 do not rotate relative to each other, and the rotation correction force is greater than or equal to a set value, the application of the rotation correction force and the compression correction force is stopped.

[0098] The set value should be greater than the minimum rotation correction force required to drive the relative rotation of the needle seat assembly 30 and the barrel sleeve assembly 10 that are not assembled in place, and should not be too large to avoid damaging the structure of the needle seat assembly 30 and the barrel sleeve assembly 10. When the rotation correction force reaches the set value, the needle seat assembly 30 and the barrel sleeve assembly 10 still cannot rotate relative to each other, which indicates that the rotation between the needle seat assembly 30 and the barrel sleeve assembly 10 is limited, and the assembly angle of the needle seat assembly 30 and the barrel sleeve assembly 10 is accurate.

[0099] Please refer to Figure 3In some embodiments, the correction assembly method further comprises, after the step S20 of simultaneously applying the rotation correction force and the compression correction force to the medicament needle in the pre-assembly state:

[0100] S31, drive the needle seat assembly 30 and the barrel sleeve assembly 10 to move away from each other along the axial direction, and rotate relatively around the axial direction for N times, N being a positive integer;

[0101] S32, drive the needle seat assembly 30 and the barrel sleeve assembly 10 to move close to each other along the axial direction to be assembled together.

[0102] After ensuring the angle accuracy between the needle seat assembly 30 and the barrel sleeve assembly 10, drive them to move away from each other so that the guide ribs and the guide grooves are disengaged, and the needle seat assembly 30 and the barrel sleeve assembly 10 can rotate relatively again. At this time, driving the needle seat assembly 30 and the barrel sleeve assembly 10 to rotate relatively will cause the positioning spring 50 connected to the needle seat assembly 30 and the barrel sleeve assembly 10 at two ends to twist, achieving the effect of increasing the torsion of the positioning spring 50. At the same time of increasing the torsion of the positioning spring 50, if the angle position of the spring lock is not accurate and the sliding protrusion of the spring lock is not in abutment with the guide rib, the positioning spring 50 will drive the spring lock to rotate until the sliding protrusion of the spring lock is in abutment with the guide rib. The guide rib limits the rotation of the spring lock, and after the spring lock is limited, the relative rotation of the needle seat assembly 30 and the barrel sleeve assembly 10 can continuously increase the torsion of the positioning spring 50.

[0103] The positioning spring 50 after increasing the torsion has an enhanced elastic force, which can meet the elastic triggering requirement of the protective sleeve. Only when the size of the external force reaches a certain degree, the protective sleeve can be triggered by overcoming the elastic force.

[0104] In addition, since the relative rotation angle of the two is an integer number of turns, in other words, an integer multiple of 360°, the relative angle of the two before and after rotation will not change, and when they are close to each other again, the guide rib can still smoothly enter the guide groove. Understandably, the larger the value of N, the more obvious the effect of increasing the torsion. In this embodiment, N is 1, and in some other embodiments, N can also be 2, 3, etc., which is not limited here.

[0105] Further, the correction assembly method further comprises, after the step S32 of driving the needle seat assembly 30 and the barrel sleeve assembly 10 to move close to each other along the axial direction to be assembled together:

[0106] detecting whether the barrel sleeve assembly 10 and the needle seat assembly 30 are compressed, and whether the positioning spring 50 is compressed into the bottom of the needle seat assembly 30 away from the barrel sleeve assembly 10;

[0107] If the cartridge sleeve assembly 10 and the needle holder assembly 30 are not pressed together, or the positioning spring 50 is not pressed into the bottom of the needle holder assembly 30 away from the cartridge sleeve assembly 10, the product is determined as unqualified and is rejected. If the cartridge sleeve assembly 10 and the needle holder assembly 30 are pressed together, and the positioning spring 50 is pressed into the bottom of the needle holder assembly 30 away from the cartridge sleeve assembly 10, the process enters step S3:

[0108] Detecting whether the medicament needle is damaged and whether the protective sleeve is in the predetermined position.

[0109] If the medicament needle is damaged or the protective sleeve is not in the predetermined position, the product is determined as unqualified and is rejected.

[0110] If the medicament needle is not damaged and the protective sleeve is in the predetermined position, the product is transferred to film welding packaging.

[0111] Please refer to Figure 4 In some embodiments, the correction assembly method further comprises the following steps before step S10, i.e., obtaining the medicament needle in the pre-assembly state:

[0112] S41: detecting whether the clamping part of the protective sleeve in the cartridge sleeve assembly 10 matches the guide rib constructed on the cartridge sleeve.

[0113] S42: if the clamping part matches the guide rib, driving the cartridge sleeve and the protective sleeve to move away from each other along the axial direction, and to rotate relatively around the axial direction by a first set angle, and then driving the cartridge sleeve and the protective sleeve to move close to each other along the axial direction to be assembled into one body. If the clamping part does not match the guide rib, no action is taken.

[0114] It can be understood that the correction assembly method further comprises the following steps before step S41, i.e., detecting whether the clamping part of the protective sleeve in the cartridge sleeve assembly 10 matches the guide rib of the cartridge sleeve:

[0115] S50: providing the cartridge sleeve and the protective sleeve, and coaxially sleeving the protective sleeve on one end of the cartridge sleeve to obtain the cartridge sleeve assembly 10.

[0116] First, the protective sleeve and the cartridge sleeve are obtained, the protective sleeve is sleeved on one end of the cartridge sleeve, and then whether the assembly of the two is accurate is checked. An important standard for measuring whether the two are accurate is to detect whether the clamping part of the protective sleeve misfits the guide rib of the cartridge sleeve.

[0117] If the clamping part of the protective sleeve misfits the guide rib of the cartridge sleeve, it means that the angle between the protective sleeve and the cartridge sleeve is not accurate, and the misfit can be resolved by rotating by a first set angle. If the clamping part of the protective sleeve does not misfit the guide rib of the cartridge sleeve, no rotation is needed, and the subsequent process can be directly entered.

[0118] The first set angle can be set according to the density of the engaging portions and the guide ribs provided on the protective sleeve and the barrel sleeve, that is, the angle between adjacent engaging portions or guide ribs, and other factors. The first set angle can be 5°, 3°, or 7°, etc., so as to be suitable for disengaging the misfitting by one rotation. After correction, return to step S41 to detect the correction result, and in the case of one-time correction failure, the correction can also be achieved by multiple rotations.

[0119] In this way, the assembly relationship between the protective sleeve and the barrel sleeve can be verified and corrected in a simple manner, so as to facilitate subsequent correction assembly and improve the assembly qualification rate of the medicament needle.

[0120] The barrel sleeve assembly 10 obtained through steps S41 and S42 is subsequently pre-assembled with the needle seat assembly 30 to obtain a medicament needle in a pre-assembled state.

[0121] In some embodiments, the correction assembly method further includes, before step S10 and specifically after step S50:

[0122] A position adjusting spring 50 is installed in the barrel sleeve assembly 10 and one end of the position adjusting spring 50 is connected to the barrel sleeve assembly 10;

[0123] The needle seat assembly 30 and the barrel sleeve assembly 10 are driven to move axially towards each other to be assembled into one, and the other end of the position adjusting spring 50 is connected to the needle seat assembly 30, so as to obtain a medicament needle in a pre-assembled state.

[0124] Connecting the two ends of the position adjusting spring 50 to the needle seat assembly 30 and the barrel sleeve assembly 10 respectively is conducive to subsequent torque increase of the position adjusting spring 50.

[0125] Please refer to Figure 5 In some embodiments, in step S42, if the engaging portions and the guide ribs are fitted, the protective sleeve and the barrel sleeve are driven to move axially away from each other and rotate relatively around the axis by a first set angle, and the protective sleeve and the barrel sleeve are driven to move axially towards each other to be assembled into one; if the engaging portions and the guide ribs are not fitted, the step of not acting is followed by further including:

[0126] S60: driving the protective sleeve and the barrel sleeve to rotate relatively by a second set angle.

[0127] It can be understood that at least one of the protective sleeve and the barrel sleeve can be driven to rotate relative to the other. Specifically, the protective sleeve can be positioned, and the barrel sleeve can be driven to rotate. Step S60 can specifically be performed before step S10 to drive the protective sleeve and the barrel sleeve of the medicament needle in the pre-assembled state to rotate relatively by a second set angle.

[0128] The second set angle can be, but is not limited to, 10°, 20°, 30°, 40°, 50°, or 60°, etc.

[0129] After rotating by a certain angle, the engaging part and the cooperating part of the protective sleeve and the barrel sleeve are engaged with each other, and the positioning of the protective sleeve and the barrel sleeve is completed. At this time, the protective sleeve can accurately perform the telescopic movement. In addition, during this process, the spring lock with inaccurate angle position can rotate with the protective sleeve relative to the barrel sleeve to a certain extent, and the sliding protrusion can resist the guide rib during this process to complete the positioning of the protective sleeve, the barrel sleeve and the spring lock.

[0130] The above-mentioned correction assembly method first assembles the barrel sleeve and the protective sleeve into a barrel sleeve assembly 10, detects the cooperation relationship of the two, and adjusts the barrel sleeve assembly 10 with mis-cooperation of the protective sleeve and the barrel sleeve accordingly. After obtaining the barrel sleeve assembly 10, the positioning spring 50 is obtained and installed in the barrel sleeve assembly 10, the needle seat assembly 30 is directly opposite to the barrel sleeve assembly 10 and the positioning spring 50 to complete the cooperation, and the needle seat assembly 30 and the barrel sleeve assembly 10 are driven to be assembled into one to obtain a pre-assembled state of the medicine needle. The driving drives the protective sleeve and the barrel sleeve to rotate by a certain angle. Then, by applying a rotation correction force to the medicine needle in the pre-assembled state, the assembly of the barrel sleeve assembly 10 and the needle seat assembly 30 in the pre-assembled state is detected to complete the correction assembly, and the medicine needle obtained after the correction is subjected to the torque increase of the positioning spring 50 and a series of subsequent detections, and then the formal packaging and assembly are completed.

[0131] By using the above-mentioned correction assembly method, the assembly between the barrel sleeve assembly 10 and the needle seat assembly 30 is corrected by the rotation correction force and the compression correction force, which can effectively reduce the use amount of the CCD equipment, improve the detection efficiency and reduce the cost, and can complete the correction adjustment while detecting, which is very convenient and efficient.

[0132] Please refer to Figures 6 to 11 The present application provides a pre-assembly device 210 and a spring assembly device 230, the pre-assembly device 210 is used for pre-assembling the needle seat assembly 30 and the barrel sleeve assembly 10 to obtain a medicine needle in a pre-assembled state. The pre-assembly device 210 includes a fixing mechanism 211 and an assembly mechanism 213, the fixing mechanism 211 obtains and clamps the barrel sleeve assembly 10. The assembly mechanism 213 obtains and clamps the needle seat assembly 30, and can drive it to move and rotate around its own axis.

[0133] The spring assembly device 230 is arranged upstream of the pre-assembly device 210, the spring assembly device 230 includes a spring taking member 231 and a spring clamping member 233, the spring taking member 231 can obtain the positioning spring 50 and drive the positioning spring 50 to overturn. The profile of the spring taking member 231 is generally conical, which can extend into and obtain the positioning spring 50, and can drive the positioning spring 50 to overturn to an angle convenient for clamping by the spring clamping member 233 after obtaining the positioning spring 50. The spring clamping member 233 is used for clamping the positioning spring 50 and can drive it to move and rotate around its own axis.

[0134] The spring assembling device 230 is used to obtain the positioning spring 50 through the spring clamp 233, and drive the positioning spring 50 to move into the barrel sleeve assembly 10 to connect the barrel sleeve assembly 10.

[0135] The assembling mechanism 213 of the pre-assembly device 210 clamps the needle seat assembly 30 and turns to an angle to facilitate the assembly of the needle seat assembly 30 and the barrel sleeve assembly 10, and the needle seat assembly 30 is opposite to the barrel sleeve assembly 10 clamped and fixed by the fixing mechanism 211, and moves into the barrel sleeve assembly 10 to be connected with the positioning spring 50. Finally, the needle seat assembly 30 and the barrel sleeve assembly 10 are driven to move close to each other in the axial direction, and the needle seat assembly 30 and the barrel sleeve assembly 10 are assembled to obtain the medicament needle in the pre-assembly state.

[0136] Please refer to Figures 12 to 15 The present application also provides a correction assembling device 250, which is used to correct and assemble the medicament needle in the pre-assembly state by using the correction assembling method. The correction assembling device 250 comprises a driving assembly 251 and a clamping assembly 253. The clamping assembly 253 comprises a first clamping member 2531 and a second clamping member 2533 arranged at intervals, the first clamping member 2531 is configured to clamp the needle seat assembly 30, and the second clamping member 2533 is configured to clamp the barrel sleeve assembly 10. At least one of the first clamping member 2531 and the second clamping member 2533 is in transmission connection with the driving assembly 251.

[0137] The driving assembly 251 can drive the first clamping member 2531 and the second clamping member 2533 to move relative to each other while driving the first clamping member 2531 and the second clamping member 2533 to rotate relative to each other.

[0138] The driving assembly 251 and the clamping assembly 253 can be arranged downstream of the pre-assembly device 210, and the clamping assembly 253 is configured to clamp the medicament needle in the pre-assembly state. Specifically, the clamping assembly 253 clamps the needle seat assembly 30 through the first clamping member 2531, and clamps the barrel sleeve assembly 10 through the second clamping member 2533.

[0139] It can be understood that the driving assembly 251 drives the first clamping member 2531 and the second clamping member 2533 to rotate relative to an axis and simultaneously drives the first clamping member 2531 and the second clamping member 2533 to move relative to the axis, and when the clamping assembly 253 clamps the pre-assembled medicament needle, the axis coincides with the axial direction of the pre-assembled medicament needle. When the clamping assembly 253 clamps the pre-assembled medicament needle, the driving assembly 251 drives the first clamping member 2531 and the second clamping member 2533 to rotate, which aims to apply a rotational correction force to the pre-assembled medicament needle. At the same time, the driving assembly 251 drives the first clamping member 2531 and the second clamping member 2533 to move relative to each other, specifically to move closer to each other, which aims to apply a compression correction force to the pre-assembled medicament needle.

[0140] The above-mentioned correction assembly device 250 can generate the rotational correction force and the compression correction force by driving the first clamping member 2531 and the second clamping member 2533 to rotate relative to each other and simultaneously move relative to each other through the driving assembly 251, so as to realize the correction assembly method, correct and assemble the pre-assembled medicament needle, and obtain the angle-aligned and installed medicament needle. In addition, since the material structure of the medicament needle is usually thin and not convenient for manual operation, manual operation is more likely to cause workers to be pricked in the operation process. Therefore, the correction assembly device 250 is used for correction assembly, which can reduce the use of CCD equipment, has lower cost, and is simpler, more efficient and safer.

[0141] It can be understood that in other embodiments, the elastic force of the spring, gravity and the like can also be used as the compression correction force, as long as the force can be applied to the pre-assembled medicament needle when the driving assembly 251 drives the first clamping member 2531 and the second clamping member 2533 to rotate relative to each other, and can make the originally misaligned needle seat assembly 30 and the barrel sleeve assembly 10 close to each other to complete the assembly when aligned, which is not limited here.

[0142] Further, the first clamping member 2531 is arranged above the second clamping member 2533, and the driving assembly 251 is in transmission connection with the first clamping member 2531.

[0143] In other words, the first clamping member 2531 is a movable clamping member, and the second clamping member 2533 is a fixed clamping member. The first clamping member 2531 rotates and moves under the driving of the driving assembly 251, that is, rotates and moves relative to the fixed second clamping member 2533, so as to drive the clamped needle seat assembly 30 to rotate and move relative to the clamped barrel sleeve assembly 10 of the second clamping member 2533. In addition, the first clamping member 2531 is arranged above the second clamping member 2533, which is beneficial to the correction assembly of the needle seat assembly 30 and the barrel sleeve assembly 10 having an upper and lower assembly relationship. In this way, the driving mode is simpler, and the correction assembly is easier.

[0144] In some embodiments, the driving assembly 251 is capable of driving the first clamping member 2531 and the second clamping member 2533 to rotate relatively in a first rotation direction. The driving assembly 251 is also capable of driving the first clamping member 2531 and the second clamping member 2533 to rotate relatively in a second rotation direction. The first rotation direction is opposite to the second rotation direction.

[0145] The driving assembly 251 is capable of driving the first clamping member 2531 and the second clamping member 2533 to rotate relatively in a first rotation direction to apply a first rotation correction force to the medicament needle in the pre-assembly state. The driving assembly 251 is also capable of driving the first clamping member 2531 and the second clamping member 2533 to rotate relatively in a second rotation direction to apply a second rotation correction force to the medicament needle in the pre-assembly state.

[0146] The medicament needle in the pre-assembly state receives the correction from two opposite rotation directions, which can more ensure the angular alignment between the needle seat assembly 30 and the barrel sleeve assembly 10, and the installation in place.

[0147] In a specific embodiment, two correction assembly devices 250 are arranged in sequence, and the driving assembly 251 of each of the two correction assembly devices 250 is capable of generating rotation in the first rotation direction and the second rotation direction. The first rotation direction is clockwise, and the second rotation direction is counterclockwise. The medicament needle in the pre-assembly state receives the correction assembly of one correction assembly device 250 and then receives the correction assembly of another correction assembly device 250.

[0148] In other embodiments, the driving assembly 251 can also be a motor capable of generating two rotation directions, and a single correction assembly device 250 uses the driving assembly 251 to generate the first rotation direction and the second rotation direction in sequence.

[0149] In some embodiments, the driving assembly 251 is a servo motor with a torque mode, or the driving assembly 251 is a resilient connecting member, a magnetic attraction connecting member, or a driving source with a rated torque.

[0150] It can be understood that the driving source can be a rotary cylinder, a cylinder with a gear rack structure, etc., as long as it can output a rated torque, which is not specifically limited here.

[0151] When the correction assembly device 250 is two arranged in sequence, the driving assembly 251 of each of the two correction assembly devices 250 is a servo motor with a torque mode.

[0152] The servo motor with fixed torque mode or the elastic connecting piece, magnetic attraction connecting piece and driving source with rated torque can output a rotating correction force with a fixed value, and the rotating correction force with a fixed value is taken as an accurate judgment standard. The medicine needle in a pre-assembly state which does not reach the assembly standard will rotate under the driving of the rotating correction force, and automatically complete accurate assembly when the needle seat assembly 30 and the barrel sleeve assembly 10 rotate to angular alignment under the action of the compression correction force.

[0153] In some embodiments, the correction assembly device 250 further comprises a detection assembly and an adjusting assembly (not shown in the figure). The detection assembly is configured to detect the cooperation between the clamping part of the protective sleeve in the barrel sleeve assembly 10 and the guide ribs constructed on the barrel sleeve. The adjusting assembly comprises a main body, a positioning mechanism and an adjusting mechanism. The positioning mechanism is fixedly connected to the main body and is configured to clamp the barrel sleeve. The adjusting mechanism is drivingly connected to the main body and is configured to clamp the protective sleeve. The adjusting mechanism can rotate relative to the positioning mechanism and move relative to the positioning mechanism under the driving of the main body.

[0154] The adjusting mechanism can rotate relative to the positioning mechanism and move relative to the positioning mechanism to drive the protective sleeve clamped thereby to move axially and rotate about the axis.

[0155] The detection assembly and the adjusting assembly can be arranged upstream of the pre-assembly device 210. The detection assembly detects the assembly of the barrel sleeve and the protective sleeve in the barrel sleeve assembly 10 obtained by the protective sleeve feeding device. The detection assembly can be, but is not limited to, a CCD detection assembly.

[0156] If the clamping part of the barrel sleeve assembly 10 does not cooperate with the guide ribs detected by the detection assembly, the adjusting assembly can be skipped and the next process can be directly entered. If the clamping part of the barrel sleeve assembly 10 cooperates with the guide ribs, the barrel sleeve assembly 10 needs to be transferred to the adjusting assembly for adjustment. The positioning mechanism of the adjusting assembly clamps the barrel sleeve, the adjusting mechanism clamps the protective sleeve, and drives the protective sleeve to separate from the barrel sleeve axially and rotate relative to the barrel sleeve about the axis by a first set angle, and then drives the barrel sleeve and the protective sleeve to be reassembled axially. The first set angle can be 5°. Then the adjusted barrel sleeve assembly 10 can be transferred to the detection assembly again for detection until it passes the detection of the detection assembly.

[0157] In this way, the detection assembly can timely find problems, and the adjusting device can be adjusted, which helps to improve the assembly qualification rate of the medicine needle.

[0158] In some embodiments, the correction assembly device 250 further comprises a rotating assembly (not shown in the figure). The rotating assembly can be arranged downstream of the detection assembly and the adjusting assembly and upstream of the driving assembly 251 and the clamping assembly 253.

[0159] The twisting assembly comprises a positioning member and a rotating member arranged above the positioning member, the positioning member is used for clamping the protective sleeve, and the rotating member is used for clamping the barrel sleeve and can drive the barrel sleeve to rotate by a certain angle.

[0160] After the twisting assembly drives the barrel sleeve to rotate by a certain angle, the clamping part and the matching part of the protective sleeve and the barrel sleeve are clamped with each other, and the positioning of the protective sleeve and the barrel sleeve is completed. At this time, the protective sleeve can be accurately extended and retracted. In addition, the sliding protrusion of the spring lock catch can also abut against the guide rib in this process, and the positioning of the protective sleeve, the barrel sleeve and the spring lock catch is completed.

[0161] In some embodiments, after the driving assembly 251 and the clamping assembly 253 of the correction assembly device 250 obtain the pre-assembled medicine needle and correct it, the needle seat assembly 30 and the barrel sleeve assembly 10 can be driven to move away from each other along the axial direction, and after rotating N times relative to each other around the axial direction, the needle seat assembly 30 and the barrel sleeve assembly 10 are driven to move close to each other along the axial direction to be assembled into one. N is a positive integer.

[0162] When the needle seat assembly 30 and the barrel sleeve assembly 10 rotate relative to each other, the ends of the positioning spring 50 connected between the needle seat assembly 30 and the barrel sleeve assembly 10 through the clamping hook are twisted, and the effect of increasing the torsion of the positioning spring 50 is achieved. The elastic force of the positioning spring 50 after increasing the torsion is enhanced, so that it can meet the elastic triggering requirement of driving the protective sleeve. Only when the size of the external force reaches a certain degree, the protective sleeve can be triggered by overcoming the elastic force.

[0163] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0164] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A calibration assembly method for calibrating and assembling a drug needle, the drug needle comprising a needle seat assembly (30) and a sleeve assembly (10), the needle seat assembly (30) being at least partially coaxially sleeved within the sleeve assembly (10), one of the needle seat assembly (30) and the sleeve assembly (10) having a guide rib, and the other having a guide groove cooperating with the guide rib, characterized in that, The calibration assembly method includes the following steps: S10: Obtain the drug needle in the pre-assembled state; S20: Simultaneously apply a rotational correction force and a clamping correction force to the drug needle in the pre-assembled state; Under the action of the rotational correction force, the needle seat assembly (30) and the sleeve assembly (10) have a tendency to rotate relative to each other about the axial direction; under the action of the clamping correction force, the needle seat assembly (30) and the sleeve assembly (10) have a tendency to move closer to each other along the axial direction, so as to correct the relative position between the sleeve assembly (10) and the needle seat assembly (30) and complete the assembly. Step S20 includes: S21: Simultaneously apply a first rotational correction force and a clamping correction force to the drug needle in the pre-assembled state; S22: Simultaneously apply a second rotational correction force and a clamping correction force to the drug needle in the pre-assembled state; The first rotational correction force is in the opposite direction to the second rotational correction force.

2. The calibration and assembly method according to claim 1, characterized in that, The magnitudes of both the first rotational correction force and the second rotational correction force are fixed values.

3. The calibration and assembly method according to claim 1, characterized in that, Following step S20, the method further includes: S31. Drive the needle seat assembly (30) and the sleeve assembly (10) away from each other along the axial direction and rotate relative to each other N revolutions around the axial direction, where N is a positive integer; S32. Drive the needle seat assembly (30) and the sleeve assembly (10) to approach each other along the axial direction until they are assembled together.

4. The calibration assembly method according to any one of claims 1-3, characterized in that, Before step S10, the method further includes: S41: Detect whether the engaging part of the protective sleeve in the sleeve assembly (10) is in sync with the guide rib constructed on the sleeve; S42: If the engaging part engages with the guide rib, the sleeve and the protective sleeve are driven to move away from each other along the axial direction and rotate relative to each other by a first set angle around the axial direction, and the sleeve and the protective sleeve are driven to move closer to each other along the axial direction until they are assembled together; if the engaging part does not engage with the guide rib, it does not operate.

5. The calibration and assembly method according to claim 4, characterized in that, Following step S42, the method further includes: S60: Drive the protective sleeve to rotate relative to the sleeve by a second predetermined angle.

6. A calibration assembly apparatus, comprising calibrating and assembling the drug needle in a pre-assembled state using the calibration assembly method as described in any one of claims 1-5, characterized in that, The calibration assembly device includes: Drive component (251); and A clamping assembly (253) includes a first clamping member (2531) and a second clamping member (2533) spaced apart. The first clamping member (2531) is configured to clamp the needle seat assembly (30), and the second clamping member (2533) is configured to clamp the sleeve assembly (10). At least one of the first clamping member (2531) and the second clamping member (2533) is drively connected to the drive assembly (251). The drive assembly (251) is capable of driving the first clamping member (2531) and the second clamping member (2533) to rotate relative to each other, and is also capable of driving the first clamping member (2531) and the second clamping member (2533) to move relative to each other while driving the first clamping member (2531) and the second clamping member (2533) to rotate relative to each other; The drive assembly (251) can drive the first clamping member (2531) and the second clamping member (2533) to rotate relative to each other along a first direction of rotation; The drive assembly (251) can also drive the first clamping member (2531) and the second clamping member (2533) to rotate relative to each other along the second direction of rotation; The first steering is opposite to the second steering.

7. The calibration assembly apparatus according to claim 6, characterized in that, The drive assembly (251) is a servo motor with torque mode; Alternatively, the drive assembly (251) may be an elastic connector, a magnetic connector, or a drive source with a rated torque.

8. The calibration assembly apparatus according to claim 6, characterized in that, The calibration assembly device further includes a detection component and an adjustment component. The detection component is configured to detect the engagement of the protective sleeve in the sleeve assembly (10) with the guide rib constructed on the sleeve. The adjustment assembly includes a main body, a positioning mechanism, and an adjustment mechanism. The positioning mechanism is fixedly connected to the main body and configured to clamp the sleeve. The adjustment mechanism is driven by the main body and configured to clamp the protective sleeve. The adjustment mechanism can rotate and move relative to the positioning mechanism under the drive of the main body.

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