CN114453850A - Assembling method and transferring and assembling mechanism - Google Patents

Abstract

The invention relates to an assembly method and a transfer assembly mechanism, which are used for assembling a sealing body to an accessory to obtain an assembly of medical consumables. The assembling method includes the following steps: S10, using a reclaiming component to obtain a sealing body, and connecting the reclaiming component and the sealing body as a whole; S20, adjusting the position of the reclaiming component so that the sealing body points to the the end of the fitting; S30, transferring the sealing body from the reclaiming assembly to the fitting, so that the sealing body and the fitting form a circumferential fit; the transferring and assembling mechanism includes: the reclaiming assembly, which uses In order to obtain the sealing body and can be connected with the sealing body as a whole; the transfer component can move the sealing body by driving the reclaiming component and the accessories to move relatively, and make the end of the sealing body face the The end of the fitting; the transfer assembly, which can drive the sealing body to transfer to the fitting when the end of the sealing body faces the end of the fitting.

Description

Assembly method and transfer assembly mechanism

technical field

The invention relates to the technical field of medical consumables production, in particular to an assembly method and a transfer assembly mechanism.

Background technique

The most common application scenario of medical consumables is to inject fluid substances into the human body or specific lesions, such as pharmaceuticals, physiological adjustment, diagnosis and treatment or replenishment solutions. It can be seen that ensuring that medical consumables have good sealing performance is of great significance for maintaining the cleanliness and hygiene of fluid substances in them and meeting specific storage requirements. Taking the most commonly used medical syringe as an example, it includes an injection tube for containing fluid substances and a push rod that can be partially extended or retracted to the tube body. The outer circumference of the push rod part that is always located in the injection tube is sleeved with a sealing body , the sealing body is used to fill the gap between the outer circumference of the push rod and the inner wall of the injection tube so that the two can form a dynamic sealing fit.

In order to ensure a good seal between the push rod and the inner wall of the injection tube, there must be sufficient pre-pressure between the sealing body and the push rod to avoid a gap between the push rod and the sealing body, but this will cause the sealing body and the pushing It is difficult to assemble the rod. It is not only more laborious to set the sealing body on the outer periphery of the push rod, but also prone to cracking of the sealing body, oval deformation of the sealing body, bending or even breaking of the push rod. increase and decrease.

SUMMARY OF THE INVENTION

In view of this, it is necessary to provide a method for assembling a sealing body and accessories. The sealing body and accessories are applied to medical consumables, and the assembling method includes the following steps:

S10, using the reclaiming component to obtain the sealing body, and connecting the reclaiming component and the sealing body into one;

S20. Adjust the position of the reclaiming component so that the sealing body points to the end of the fitting;

S30, transferring the sealing body from the reclaiming assembly to the fitting, so that the sealing body and the fitting form a circumferential fit.

The assembly method and transfer assembly mechanism provided by the present invention have at least the following beneficial effects:

1) After the reclaiming component and the sealing body are connected as a whole, by directly adjusting the position/orientation angle of the reclaiming component relative to the fittings, and then indirectly adjusting the position/orientation angle of the sealing body relative to the fittings, the pre-assembly of the fittings and the sealing body is reduced. The difficulty of adjusting the relative position, the adjustment process is simplified and traceable, and the reclaiming component can be used as a benchmark for judging whether the relative position between the sealing body and the accessories meets the requirements of the assembly process;

2) Under the premise that the reclaiming component controls/restricts the sealing body to point to the end of the fitting, transferring the sealing body can ensure that the sealing body can correctly form a circumferential fit with the fittings, and eliminate the inaccurate alignment of the sealing body and fittings. The possibility of assembly failure, sealing body cracking or ovalization/flattening deformation, the yield rate and assembly efficiency after assembly are greatly improved.

In one of the embodiments, step S10, that is, using the reclaiming assembly to obtain the sealing body, and connecting the reclaiming assembly and the sealing body as a whole, includes:

The reclaiming assembly has a first positioning reference, and the first positioning reference is used to define the position of the sealing body relative to the reclaiming assembly in its radial direction.

In this way, after the sealing body and the reclaiming assembly are connected as a whole, the fitting tightness is higher, and the sealing body is not easy to shake or deflect in the radial direction relative to the reclaiming assembly, which is beneficial to improve the relative position adjustment of the sealing body and the accessories. There will be no large relative position deviation between the two, which is conducive to subsequent assembly.

In one of the embodiments, the assembling method further comprises the following steps:

S15. Use the material stabilization component to carry the accessories; of which:

The material stabilization assembly has a second positioning reference, and the second positioning reference is used to define the position of the accessory relative to the material stabilization assembly in its radial direction;

Step S20, that is, adjusting the position of the reclaiming assembly so that the sealing body points to the end of the fitting, including the following steps:

S21. Adjust the position and/or angle of the reclaiming component relative to the material stabilizing component so that the first positioning reference and the second positioning reference point to each other.

In this way, the material stabilization assembly can first ensure the shape and dimensional stability of the accessories, and prevent the reclaiming assembly from aligning the accessories due to accidental shaking of the accessories. Provide enough auxiliary support to enhance the effect of resisting the force of the sealing body, prevent bending or shaking under the force of the sealing body, thereby improving the success rate of assembly; the positioning datums of the reclaiming component and the stabilizing component point to each other It means that the sealing body can be pointed to the end of the fitting more accurately, so that the alignment of the two before assembly is more accurate and the alignment error is smaller. The probability of failure is significantly reduced.

In one of the embodiments, step S21, namely adjusting the position and/or angle of the reclaiming component relative to the material stabilizing component, so that the first positioning datum and the second positioning datum point to each other, includes the following steps:

S211 , adjusting at least one of the reclaiming component and the material stabilizing component so that the first positioning reference and the second positioning reference are collinear.

In this way, the sealing body and the fitting can achieve coaxial alignment before assembly, and the axes of the two, as well as the first positioning reference and the second positioning reference are all collinear, so that the sealing body can be directly applied to the fitting. The transfer and assembly of the sealing body is completed in place. During the transfer process, each part of the sealing body in the circumferential direction is uniformly stressed. After assembly, the internal stress distribution of each part in the circumferential direction of the sealing body is balanced, and the assembled sealing body and accessories are firmly connected and not easy. separation.

In one of the embodiments, step S21, namely adjusting the position and/or angle of the reclaiming component relative to the material stabilizing component, so that the first positioning datum and the second positioning datum point to each other, includes the following steps:

S212 , driving the reclaiming assembly to conform to the end of the accessory, so that the reclaiming assembly and the accessory are relatively fixed.

In this way, after the relative position adjustment between the reclaiming assembly and the accessories is completed, the two can further consolidate the position adjustment result of the previous step through profiling, fitting and fixing, ensuring that the first positioning datum and the second positioning datum can always communicate with each other. Point to each other to eliminate the unexpected relative movement between the reclaiming component and the accessories during the transfer process of the sealing body to the accessories, resulting in transfer or assembly failure.

In one of the embodiments, step S10, that is, using the reclaiming assembly to obtain the sealing body, and connecting the reclaiming assembly and the sealing body as a whole, includes the following steps:

S11, the reclaiming assembly moves relatively close to the sealing body along the first positioning reference.

In this way, during the process of acquiring the sealing body by the reclaiming component, the sealing body is static relative to the reclaiming component in the radial direction, which is more conducive to the reclaiming component to obtain the sealing body correctly, and prevents the sealing body from being caused by the reclaiming component and the sealing body in the radial direction. The relative position error of the sealing body causes the unintentional damage of the sealing body by the reclaimer.

In one of the embodiments, the sealing body is a hollow structure; step S11, that is, the movement of the reclaiming assembly relatively close to the sealing body along the first positioning reference, includes the following steps:

S111 , the reclaiming assembly passes through the sealing body, and the axis of the sealing body is collinear with the first positioning reference.

In this way, the reclaiming assembly is coaxially pierced through the sealing body, and once the threading is completed, it means that the sealing body and the reclaiming assembly are coaxially fitted and connected as a whole; in addition, the reclaiming assembly can also apply equalization to the peripheral surface of the sealing body at the same time. The radial outward expansion force acting can expand the through hole area of the sealing body to a certain extent, which is convenient for the sealing body to transition from the reclaiming assembly to the fittings, and reduces the resistance of the sealing body when the fittings are set. When the shape of the sealing body is circular , the coaxial penetration can improve the roundness of the sealing body, make its shape closer to a regular circle, and reduce the difficulty of assembly and rotation.

In one of the embodiments, step S30, that is, transferring the sealing body from the reclaiming assembly to the fitting, so that the sealing body and the fitting form a circumferential fit, includes the following steps:

S31, abut the transfer assembly against the end of the sealing body away from the fitting, and use the transfer assembly to push the sealing body to slide relative to the reclaiming assembly.

In this way, the transfer assembly can exert a balanced thrust on the end of the sealing body away from the fitting, so that it will not cause local excessive or insufficient force in the circumferential direction of the sealing body. The possibility of elliptical deformation in the

The present invention also provides a transfer and assembly mechanism, which is used to transfer the sealing body and assemble the sealing body to the accessories. The transfer and assembly mechanism includes:

A reclaiming component is used to obtain the sealing body and can be connected with the sealing body as a whole;

The transfer assembly can move the sealing body by driving the reclaiming assembly and the accessories to move relatively, and make the end of the sealing body face the end of the accessories;

The transfer assembly can drive the sealing body to transfer to the fitting when the end of the sealing body faces the end of the fitting.

In one of the embodiments, the reclaiming assembly has a first positioning reference for defining the position of the sealing body relative to the reclaiming assembly in its radial direction;

The transfer assembly mechanism further includes a material stabilization assembly for carrying the accessories, and the material stabilization assembly has a second positioning reference for defining the position of the accessories relative to the material stabilization assembly in the radial direction thereof;

The transfer component drives and connects the reclaiming component or the material stabilizing component, and adjusts the position and/or angle of the reclaiming component relative to the material stabilizing component so that the first positioning reference and the second positioning reference point to each other.

In one of the embodiments, the transfer component is drivingly connected to the reclaiming component, and by adjusting the reclaiming component, the first positioning reference and the second positioning reference are collinear.

In one of the embodiments, the transfer assembly includes a first push portion for connecting the sealing body and a transfer drive portion, and the transfer drive portion can drive the first push portion to move relatively close to the accessory.

In one of the embodiments, the reclaiming assembly has a first positioning reference for defining the position of the sealing body relative to the reclaiming assembly in its radial direction, and the reclaiming assembly further includes an adapter for forming a circumferential fit with the sealing body The first positioning reference is the axis of the adapting part; the first pushing part is movably arranged in the axial direction of the adapting part.

In one of the embodiments, the adapter portion is used to pass through the sealing body and cooperate with the inner wall of the through hole of the sealing body, and the first pushing portion is sleeved on the outer periphery of the adapter portion.

In this way, when the sealing body is located in the reclaiming assembly, it first cooperates with the adapter portion circumferentially, and then transitions to the fitting and cooperates with the outer circumference of the fitting, and the first pushing portion can just be used to axially push the sealing body away from the fitting. one end.

In one embodiment, the transfer assembly drives the reclaiming assembly and the accessories to move relative to each other in translation so that the sealing body faces the end of the accessories, and the transfer assembly is connected to the reclaiming assembly, and can follow the transfer power output and the power output of the transfer assembly. Synchronous translational movement of the reclaiming component.

In this way, the reclaiming component realizes its position/orientation angle adjustment relative to the accessories through translation. During the position state adjustment process of the reclaiming component, the transfer component and the reclaiming component are always relatively static, which can ensure that the transfer component is relatively sealed against the The initial position of the body remains unchanged. After the translation of the reclaiming assembly stops, the transfer assembly can immediately start to drive the transfer sealing body.

In one embodiment, the transfer assembly drives the reclaiming assembly to turn over a preset angle so that the sealing body faces the end of the fitting, and the transfer assembly is connected to the reclaiming assembly, and can follow the transfer power output and take-up of the transfer assembly. The material components synchronously flip the preset angle.

In this way, the reclaiming assembly can adjust its position/orientation angle relative to the accessory by rotating.

In one of the embodiments, the transfer assembly can drive the reclaiming assembly to conform to the end of the accessory and be relatively fixed.

In one of the embodiments, the transfer assembly mechanism further includes a transfer assembly, at least one of the transfer assembly and the reclaiming assembly can move relatively close to the other so that the transfer assembly can acquire the sealing body, and the transfer assembly can work with the sealing body Move relatively close to the fitting so that the end of the sealing body faces the end of the fitting.

In this way, the structure for obtaining the sealing body and transferring the sealing body to the fittings in the adapter part of the reclaiming component and the transfer component can be set differently. For example, the end of the adapter part is chamfered or rounded to reduce the difficulty of obtaining the sealing body and the degree of damage to the sealing body, and then use the structure for obtaining the sealing body in the transfer assembly/for transferring the sealing body to the fitting. The structure of the body is set to be suitable for the size of the fitting to facilitate the transfer of the sealing body thereon, which can prevent the chamfering/rounding of the fitting part from interfering with the direct transfer of the sealing body from the fitting part to the fitting.

In one embodiment, the transfer assembly includes a first transfer unit and a second transfer unit, the transfer assembly can repeatedly switch the reclaiming assembly to be in the feeding position or the transfer position, and can repeatedly switch the second transfer unit so that it is in a transit position or an assembled position;

The reclaiming component obtains the sealing body when it is in the feeding position, and guides the sealing body to transfer to the first transfer unit when it is in the transfer position; the second transfer unit obtains the sealing body when it is in the transfer position, and guides the sealing body to transfer to the accessories when it is in the assembly position. .

In one of the embodiments, the transfer assembly includes a first push portion, a second push portion, and a third push portion movably connected to the reclaiming assembly, the first transfer unit, and the second transfer unit, respectively;

The reclaiming assembly points to the first transfer unit when it is in the transfer position, and the first pushing part pushes the sealing body to the first transfer unit in response to the reclaiming assembly being in the transfer position;

When the second transfer unit is in the transfer position, it points to the first transfer unit, and the second push part responds to the second transfer unit to the transfer position and pushes the sealing body to the second transfer unit;

The second relay unit points to the fitting when the second relay unit is in the assembled position, and the third pushing portion pushes the sealing body toward the fitting in response to the second relay unit being in the assembled position.

Description of drawings

FIG. 1 is a schematic structural diagram of a transfer and assembly mechanism according to an embodiment of the present invention from a first perspective;

Fig. 2 is a partial enlarged schematic view of the transfer assembly mechanism shown in Fig. 1 at X;

3 is a schematic structural diagram of a transfer and assembly mechanism according to an embodiment of the present invention from a second viewing angle;

Fig. 4 is a partial enlarged schematic view of the transfer assembly mechanism shown in Fig. 3 at Y;

FIG. 5 is a partial structural schematic diagram of a transfer and assembly mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a transfer assembly of a transfer assembly mechanism according to an embodiment of the present invention.

Description of reference numbers:

100, transfer assembly mechanism; 200, push rod;

10. Reclaiming component; 11. Adapting part; 20. Transferring component; 30. Transferring component; 31. First pushing part; 32. Transfer driving part; 33. First transfer part; 351, the second push part; 352, the first intermediate drive source; 361, the third push part; 362, the second intermediate drive source; 40, the material stabilization component; 50, the positioning component.

Detailed ways

The technical solutions in the embodiments of the present invention will be cleared and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The present invention provides an assembly method for an assembly of medical consumables, and provides a transfer assembly mechanism 100 capable of executing the assembly method. The assembly includes a sealing body and a fitting, and the assembling method is used to assemble the sealing body to a specific position on the fitting, so that the fitting can fit with other elements and form a sealing fit. The present invention does not specifically limit the type of medical consumables. The following takes the assembly process of the push rod 200 of the medical syringe and the sealing ring as an example to describe the steps of the above-mentioned assembly method and the structure and principle of the transfer assembly mechanism 100 in detail. The above-mentioned accessories and The sealing bodies are the push rod 200 and the sealing ring respectively.

In the medical syringe, the part of the push rod 200 always located in the injection tube is sleeved with a hollow sealing ring, the inner peripheral wall of the sealing ring is in sealing contact with the outer wall of the push rod 200, and the outer peripheral wall of the sealing ring is used for contacting the inner wall of the injection tube. Of course, in other embodiments, the sealing body may also have a non-hollow structure, and the fitting is not necessarily the push rod 200. For example, the fitting may be a structure with a hollow cavity, and the sealing body is a solid structure and is used to seal the hollow of the fitting. Orifice opening.

First, the assembly method is introduced, and the assembly method includes the following steps:

S10, using the reclaiming assembly 10 to obtain a sealing body, and connecting the reclaiming assembly 10 and the sealing body into one body;

S20, adjusting the position of the reclaiming assembly 10 so that the sealing body points to the end of the fitting;

S30 , transferring the sealing body from the reclaiming assembly 10 to the fitting, so that the sealing body and the fitting form a circumferential fit.

Steps S10 and S20 jointly reveal that after the reclaiming assembly 10 obtains the sealing ring, it becomes a relatively static whole with the sealing ring. The position and attitude/orientation angle of the push rod 200 indirectly adjust the position and orientation angle of the sealing ring relative to the push rod 200 . When the normal direction of the end of the sealing ring points to the end of the push rod 200 , it means that the pre-assembly position adjustment between the sealing ring and the push rod 200 has been successfully completed, and the operation of transferring the sealing ring can be performed.

Step S30 reveals that: when the normal direction of the end of the sealing ring points to the end of the push rod 200, the sealing ring can first move relative to the reclaiming assembly 10 under the action of the external force, and then separate from the reclaiming assembly 10, and the sealing ring is the first to disengage. Part of the reclaiming assembly 10 transitions to the end of the push rod 200 along the way, and then continues to apply external force to the sealing ring, so that the remaining part of the sealing ring also transitions to the end of the push rod 200 . Continue to apply external force to the sealing ring until the sealing ring reaches the designated assembly area on the push rod 200. Finally, the sealing ring and the assembly area of the push rod 200 form a circumferential fit centered on the normal direction of the end of the push rod 200. The peripheral side is sealed with the sealing ring.

For a medical syringe, the assembly area of the push rod 200 passes through the through hole of the sealing ring, and the inner wall of the sealing ring is in sealing contact with the outer wall of the assembly area; for other types of medical consumables, for example, the sealing body is a solid structure, and the accessories are With the structure of the hollow cavity, the sealing body finally closes the opening of the hollow cavity, and the inner peripheral wall of the hollow cavity is in sealing contact with the outer side of the sealing body.

Step S10 specifically further includes the following limitations:

The reclaiming assembly 10 has a first positioning reference, and the first positioning reference is used to define the position of the sealing body relative to the reclaiming assembly 10 in its radial direction.

The above limitation reveals that after the reclaiming assembly 10 obtains the sealing ring, the freedom of movement of the sealing ring relative to the reclaiming assembly 10 in the radial direction is immediately restricted. How to adjust the position/orientation angle of the reclaiming assembly 10 relative to the push rod 200, the reclaiming assembly 10 and the sealing ring are always relatively fixed in the radial direction of the sealing ring, so that when the normal direction of the end of the sealing ring points to the end of the push rod 200 The sealing ring is not easy to move relative to the end of the push rod 200 along its radial direction under external interference, which improves the centering and positioning accuracy of the sealing ring and the push rod 200 before assembling.

Optionally, the first positioning datum is a virtual reference line. After the reclaiming assembly 10 obtains the sealing body, the axis of the sealing ring coincides with the first positioning reference, which can be regarded as the axis of the sealing body occupying the first positioning reference at this time. A straight line where the positioning datum is located. Of course, the present invention does not specifically limit the shape of the sealing body. The sealing ring can be not only a circular ring, but also a polygonal ring or an elliptical ring. At this time, the axis of the sealing ring passes through the geometric center of the polygon or the long axis of the ellipse. The midpoint/minor axis midpoint, and is perpendicular to the extended plane in which the seal ring is located.

Further, step S10 includes the following steps:

S11. The reclaiming assembly 10 moves relatively close to the sealing body along the first positioning reference.

Step S11 reveals that: the reclaiming assembly 10 approaches the sealing ring along the extending direction of the first positioning datum and obtains it, and the above has disclosed that after the reclaiming assembly 10 obtains the sealing ring, the axis of the first positioning datum and the sealing ring coincide. Therefore, step S11 substantially defines that the reclaiming assembly 10 moves close to the sealing ring along the axis of the sealing ring and is coaxially connected to the sealing ring as a whole.

Further, step S11 includes the following steps:

S111. The reclaiming assembly 10 passes through the sealing body, and makes the axis of the sealing body and the first positioning reference collinear.

Step S111 is specially suitable for assembling the push rod 200 and the sealing body having a hollow structure, such as the assembly of the sealing ring and the push rod 200 in the medical syringe described in this specification. Step S111 discloses: the reclaiming assembly 10 is coaxially pierced through the hollow sealing body, and once the reclaiming assembly 10 obtains the sealing ring, it can exert a balanced radial outward expansion force on the peripheral wall of the sealing body, which can expand the sealing ring to a certain extent. The size of the through hole is convenient for the sealing ring to transition from the reclaiming assembly 10 to the push rod 200, reducing the resistance when the sealing ring is sleeved on the push rod 200; especially when the shape of the sealing ring is circular, the coaxial penetration can also improve the sealing effect. The roundness of the circle so that its shape is closer to a regular circle.

Further, the assembling method also includes the following steps:

S15, using the material stabilization assembly 40 to carry the accessories; wherein, the material stabilization assembly 40 has a second positioning reference, and the second positioning reference is used to define the position of the accessories relative to the material stabilization assembly 40 in its own radial direction;

In step S20, the following steps are also included:

S21. Adjust the position and/or angle of the reclaiming component 10 relative to the material stabilizing component 40 so that the first positioning reference and the second positioning reference point to each other.

Step S15 reveals that: after the material stabilization assembly 40 applies the bearing force/binding force to the push rod 200, the freedom of the push rod 200 to move relative to the material stabilization assembly 40 along its radial direction is restricted, no matter how the material reclaiming is adjusted next The position/orientation angle of the assembly 10 relative to the push rod 200, the material stabilization assembly 40 always constrains the push rod 200 to remain fixed in its radial direction. In this way, when the sealing ring is transferred to the push rod 200 , the push rod 200 is not easily swayed or deflected radially under the force of the sealing ring, which can improve the yield rate of the assembly of the sealing ring and the push rod 200 and the single assembly Success rate.

Optionally, the second positioning reference is a virtual reference line. When the material stabilization assembly 40 carries the push rod 200, the axis of the push rod 200 coincides with the second positioning reference, which can be regarded as the axis of the push rod 200 at this time occupying the position. The straight line where the second positioning datum is located.

Steps S15 and S21 jointly disclose: in the case where the sealing ring is radially fixed relative to the material reclaiming assembly 10 and the push rod 200 is radially fixed relative to the material stabilizing assembly 40, the first positioning reference and the second positioning reference are directed to each other. The opposite side means that the purpose of the axis of the sealing ring and the axis of the push rod 200 pointing to each other is indirectly achieved. In this way, the success rate and the accuracy rate of the sealing ring being successfully separated from the reclaiming assembly 10 at the intersection of the first positioning reference and the second positioning reference can be improved, and the success rate and accuracy of the sealing ring and the push rod 200 can be improved. There is a misalignment between them, so that the sealing ring is blocked by the end of the push rod 200 .

Further, step S21 includes the following steps:

S211. Adjust at least one of the reclaiming component 10 and the material stabilizing component 40 so that the first positioning reference and the second positioning reference are collinear.

Step S211 discloses: by directly adjusting the collinearity of the first positioning reference and the second reference, so that when the normal direction of the end of the sealing ring points to the end of the push rod 200 , the axis of the sealing ring is just collinear with the axis of the push rod 200 . In this way, the difficulty of transferring the sealing ring to the push rod 200 can be greatly reduced, and an axial force can be directly applied to drive the sealing ring and the push rod 200 to move relative to each other along their common axis, so as to sleeve the sealing ring to the push rod 200 . The overall shape of the sealing ring sleeved on the push rod 200 is close to a regular circle, and the degree of ovalization deformation is lower.

Further, step S21 also includes the following steps:

S212 , driving the reclaiming assembly 10 to conform to the end of the accessory, so that the reclaiming assembly 10 and the accessory are relatively fixed.

Specifically, the reclaiming assembly 10 includes an adapting portion 11 for directly obtaining the sealing ring and circumferentially fitting with it. The end of the adapting portion 11 that first extends into the through hole of the sealing ring and the push rod 200 first pass through the sealing ring The ends of the through holes have surface shapes that match each other, and the two can fit together and are fixedly matched; step S212 discloses: after the relative position/orientation angle between the reclaiming assembly 10 and the push rod 200 is adjusted, the two pass through The profiling adaptation can further consolidate the position adjustment result of the previous step, ensure that the first positioning datum and the second positioning datum can always point to each other, and eliminate the need for the reclaiming assembly 10 and the push rod during the transfer of the sealing ring to the push rod 200. Unexpected relative movement between 200 results in assembly failure.

Further, step S30 includes the following steps:

S31 , abut the transfer assembly 30 against the end of the sealing body away from the fitting, and use the transfer assembly 30 to push the sealing body to slide relative to the reclaiming assembly 10 .

Step S31 discloses: using the transfer assembly 30 at the end of the sealing ring away from the push rod 200 to apply a thrust directed to the push rod 200 to the sealing body to complete the transfer and assembly of the sealing ring, so that the stress state of the sealing body is more reasonable and safe, and will not be affected. This will cause excessive or insufficient local stress in the circumferential direction of the sealing ring, and there will be no excessive shearing force on a certain cross section in the circumferential direction of the sealing ring, which eliminates the ovalization during the transfer and assembly of the sealing ring. possibility of deformation.

The structure and operation principle of the transfer assembly mechanism 100 are described below, including the reclaiming assembly 10 for obtaining the sealing ring and capable of being integrally connected with the sealing ring, the reclaiming assembly 10 and the sealing ring being integrally connected by driving The transfer assembly 20 that moves relative to the push rod 200 can drive the sealing ring to transfer to the push rod 200 when the normal direction of the end of the sealing body points to the end of the push rod 200 and is assembled to the transfer assembly 30 of the push rod 200 . The reclaiming component 10 , the transferring component 20 and the transferring component 30 are respectively used to perform the above steps S10 , S20 and S30 .

Specifically, the reclaiming assembly 10 includes an adapter portion 11 for directly acquiring the sealing body and forming a circumferential fit therewith, and the significance of forming a circumferential fit is to ensure that the sealing body can still retain its sealing body after being acquired by the adapter portion 11 . In the shape of the original state, the adapting portion 11 is in contact with the circumferential side wall of the sealing body, so as to prevent the sealing body from being deformed by ovalization or flattening. The first positioning reference in the aforementioned assembling method is the geometric center of the adapter portion 11 .

Optionally, please refer to FIG. 2 , FIG. 4 , and FIG. 5 , the adapter portion 11 is a pin-shaped element, and its axis is the first positioning reference. The outer peripheral wall of the fitting portion 11 is coaxially connected as a whole. In order to facilitate the fitting portion 11 to pass through the hollow sealing body, the outer edge of the end portion of the fitting portion 11 is provided with chamfers or rounded corners. The entirety of the fitting portion is in the shape of a cone, a truncated shape or a hemispherical shape, so that the degree of damage to the surface of the sealing body by the fitting portion 11 can be reduced. Of course, in other embodiments, when the sealing body has other structures or shapes, the fitting portion 11 does not necessarily have a pin-shaped structure. For example, when the sealing body is a solid structure and is used to block the opening of the cavity of the fitting with a hollow cavity, the fitting part 11 can also be a structure with a hollow groove or a cavity, through which the groove or cavity can pass. The inner wall is sleeved or annularly distributed on the outer peripheral wall of the sealing body, and at this time, the axis of the sealing body is collinear with the axis of the groove/recess.

The transfer assembly 20 first drives the reclaiming assembly 10 that has obtained the sealing body to move relative to the push rod 200 , and adjusts the position/orientation angle of the sealing body relative to the push rod 200 while transferring the sealing body. It should be noted that when the normal direction of the end of the sealing body points to the end of the push rod 200 , the sealing body can either have been separated from the adapting part 11 of the reclaiming assembly 10 , or can continue to remain in the position of the reclaiming assembly 10 . Adapter part 11 .

Further, the transfer and assembly mechanism 100 further includes a material stabilizer assembly 40 for carrying the push rod 200 and exerting a restraining force on the push rod 200. Under the restraint of the material stabilizer assembly 40, the push rod 200 is relative to the material stabilizer in its radial direction. Assembly 40 is fixed. The material stabilization assembly 40 has a second positioning reference, and the second positioning reference is a virtual straight line. After the push rod 200 is carried by the material stabilization assembly 40, its axis is collinear with the second positioning reference.

Referring to FIGS. 1 to 4 , the transfer assembly 20 includes a transfer drive source for driving the reclaimer assembly 10 , and the transfer assembly mechanism further includes a transfer assembly (not numbered in the figures). The transfer assembly includes a first transfer unit and a second transfer unit. The first transfer unit and the material stabilization assembly 40 are arranged along the driving stroke direction of the transfer drive source. The second transfer unit is also installed on the transfer drive source and can follow The reclaiming assembly 10 moves synchronously, and the reclaiming assembly 10 and the second transfer unit are also arranged along the driving stroke direction of the transfer drive source. There are a first parking point and a second parking point respectively on the driving stroke of the transfer drive source, and the reclaiming assembly 10 and the second transfer unit are respectively sealed when the power output end of the transfer drive source is at the first parking point. The body feeding position and the first transfer unit, and when the power output end of the transfer drive source is at the second parking point, it corresponds to the first transfer unit and the stabilizing assembly 40/push rod 200 respectively, and the position of the first transfer unit It is the transfer position of the sealing body, and the position where the material stabilization assembly 40 is located is the assembling position of the sealing body.

After the reclaiming assembly 10 obtains the sealing body at the feeding position, it first moves close to the first transfer unit following the positive power output of the transfer drive source, and then reaches the transfer position. The adapter part 11 of the material assembly 10 is transferred to the first transfer unit. Then the transfer drive source outputs reverse power to drive the reclaiming assembly 10 to move back toward the sealing body feeding position. At the same time, the second transfer unit follows the reverse power output of the transfer drive source to the transfer position. After that, the sealing body is transferred from the first transfer unit to the second transfer unit, and at the same time, the reclaiming assembly 10 that is folded back to the feeding position of the sealing body obtains a new sealing body. After that, the transfer drive source changes the power output direction again, the second transfer unit drives the sealing body and follows the positive power output of the transfer drive source to the assembly position, so that the seal body is transferred from the second transfer unit to the push rod 200, At the same time, the newly obtained sealing body on the reclaiming assembly 10 is also transferred to the first transfer unit.

Specifically, the first transfer unit includes a first transfer portion 33 in the shape of a pin, the second transfer unit includes a second transfer portion 34 in the shape of a pin, and the distance between the first positioning reference and the axis of the second transfer portion 34, It is equal to the distance from the axis of the first transfer part 33 to the second positioning reference. When the sealing body is in the feeding position, the distance between its axis and the axis of the first transfer part 33 is equal, and it is also the same as the distance from the first positioning reference to the second positioning reference. The distances between the axes of the two intermediate parts 34 are equal. The transfer assembly 30 includes: a first push portion 31 and a transfer drive portion 32 drivingly connected to the first push portion 31. The first push portion 31 is sleeved on the outer periphery of the adapter portion 11 of the reclaimer assembly 10 and can be opposed to each other along a first positioning reference. Sliding on the adapter portion 11 , it also includes: a second push portion 351 , a first relay drive source 352 drivingly connected to the second push portion 351 , a third push portion 361 , and a second relay drive source drivingly connected to the third push portion 361 362. The first push part 31 and the transfer drive part 32 are connected to the reclaiming assembly 10, and can be relatively fixed and move synchronously with the reclaiming assembly 10; A transfer portion 33 has a degree of freedom of axial movement along the first transfer portion 33 , the third push portion 361 is movably mounted on the second transfer unit, sleeves the second transfer portion 34 and has an axis along the second transfer portion 34 . freedom of movement.

When the sealing body is transferred from the reclaiming assembly 10 to the first transfer unit, the end of the adapter part 11 first follows the positive power output of the transfer drive source and points to the end of the first transfer part 33, so that a guide seal can be formed The transfer trajectory of the body moving toward the first transfer unit 33, as the reclaiming assembly 10 reaches the transfer position, the transfer drive source pushes the end of the sealing body away from the first transfer unit through the first pusher 31, so that the sealing body is transferred to the first transfer unit. Then, the second transfer portion 34 follows the reverse power output of the transfer drive source to reach the transfer position and points to the end of the first transfer portion 33, and the second push portion 351 is driven by the first transfer drive source 352. The pushing part 351 pushes the sealing body to transfer to the second transfer part 34; after that, the second transfer part 34 follows the positive power output of the transfer drive source to the assembled position and points to the end of the push rod 200, so that a guide sealing body can be formed Toward the transfer trajectory of the push rod 200 , the second intermediate drive source 362 drives the third push portion 361 , and the third push portion 361 pushes the sealing body to transfer to the push rod 200 .

For the push rod 200 of the medical syringe, the simplest structure is to set a necked section for the sealing ring to be sheathed, and the outer diameters of both ends of the necked section are larger than the outer diameter of the necked section itself, so that the Two stepped surfaces are formed on the rod 200 , and the two stepped surfaces can stop the axial ends of the sealing ring respectively, so as to limit the sealing ring at the necked section, and prevent the sealing ring from falling off the push rod 200 .

As for the adapter part 11, since it is the first structure to wear the sealing ring in the transfer assembly mechanism 100, the end of the adapter part 11 needs to be chamfered or rounded to reduce the difficulty of wearing the sealing ring. It is difficult to reduce the degree of extrusion damage to the sealing ring by the outer peripheral edge of the adapter portion 11 . However, if the first transfer unit and the second transfer unit are not provided, but the reclaimer assembly 10 is directly brought to the assembly position, and the adapter portion 11 is directed to the end of the push rod 200 to transfer the sealing ring, the following problems will occur :

1) The minimum outer diameter of the chamfering or rounding of the adapter part 11 is smaller than the outer diameter of the end face of the push rod 200 . This means that when the sealing ring is transferred from the adapter part 11 to the end of the push rod 200, the outer diameter of the part where the sealing ring is sleeved will experience a trend of decreasing first and then suddenly increasing, and the suddenly larger outer diameter corresponds to the push rod. The outer diameter of the end face of the rod 200 is abruptly increased compared to the minimum outer diameter of the chamfered/rounded corner of the adapter part 11; this will increase the difficulty of transferring the sealing ring to the necked section;

2) The minimum outer diameter of the chamfering or rounding of the adapter part 11 is greater than or equal to the outer diameter of the end face of the push rod 200 . This means that when the sealing ring is transferred from the cylindrical section of the adapter portion 11 to the end of the push rod 200 , the outer diameter of the part where the sealing ring is set will experience a continuous decreasing trend, that is, the The outer diameter is converted from the outer diameter of the cylinder section of the adapter part 11 to the outer diameter of the chamfer/round corner of the adapter part 11, and then into the outer diameter of the end of the push rod 200, which will cause the sealing ring to move along the axis of the push rod 200. Slip too much and miss the set necking section.

It can be seen that the key to ensure that the sealing ring can be smoothly and uniformly transferred to the push rod 200 and then correctly sleeve the necked section is to make the outer diameter of the cylindrical section of the adapter portion 11 equal to or substantially the same as the outer diameter of the end of the push rod 200 equal, which conflicts with the chamfering/rounding provided on the adapter 11 . In order to overcome this conflict, a first relay unit and a second relay unit are added in this embodiment, wherein the end of the adapting part 11 is still normally provided with chamfers or rounded corners, and the outer diameter of the first relay part 33 is the same as that of the suitable The minimum outer diameter of the chamfering/rounding of the fitting part 11 is equal, so that the first pushing part 31 can smoothly push the sealing body to the first intermediate part 33; the outer diameter of the second intermediate part 34 is the same as that of the first intermediate part 33 The outer diameter of the outer circle and the outer diameter of the end of the push rod 200 are equal, and the end of the second intermediate portion 34 is not provided with chamfering/rounding, or, the length of the chamfering/rounding at the end of the second intermediate portion 34 is far It is smaller than the chamfering/rounding length of the adapter part 11, so that whether the sealing body is transferred from the first transfer part 33 to the second transfer part 34, or from the second transfer part 34 to the end of the push rod 200, The outer diameter of the part on which the sealing body is sleeved basically does not change.

It should be noted that the above-mentioned first relay unit and second relay unit are not necessary components in the transfer assembly mechanism 100. In other embodiments, the first relay unit and the second relay unit may not be provided, and The second push portion 351 , the third push portion 361 , the first relay drive source 352 and the second relay drive source 362 are omitted. Correspondingly, the relay position can be canceled, and the reclaimer assembly 10 is directly driven by the transfer assembly 20 . From the loading position to the assembling position, and directing the adapter part 11 to the end of the push rod 200 , then the first push part 31 and the transfer driving source push the sealing body to transfer it to the push rod 200 .

It should also be noted that the provision of the first transfer unit and the second transfer unit described above is not the only solution for transferring the sealing body from the reclaiming assembly 10 to the transfer assembly, and then from the transfer assembly to the push rod 200 . For example, in another optional embodiment, the relay assembly may be provided with only one relay portion, and may also include a position adjustment portion that is drivingly connected to the relay portion, and the position adjustment portion drives the relay portion and changes its relative to the position adjustment portion. The position state/orientation angle of the material assembly 10 and the push rod 200 (referred to as the position of the intermediate portion for short). When the position of the transfer part is switched until the transfer part points to the adapter part 11 , the transfer assembly 30 transfers the sealing body on the adapter part 11 to the transfer part, and then the position adjusting part drives the transfer part and the sealing body to move close to the push rod 200 at the same time. , until the sealing body and the transfer part both point to the end of the push rod 200 , and finally the transfer assembly 30 transfers the sealing body on the transfer part to the push rod 200 . The position adjusting part can drive the intermediate part to rotate, also can drive the intermediate part to move in translation, and can also drive the intermediate part to move in a compound motion along an irregular trajectory, which will not be described in detail here.

Of course, the position adjusting part can also drive and connect the reclaiming assembly 10 and/or the push rod 200 to move the reclaiming assembly 10 and/or the push rod 200 relatively close to the transfer part, as long as at least one of the transfer part and the reclaiming assembly 10 moves One can move relatively close to the other so that the intermediate part can obtain the sealing body, and then the intermediate part and the sealing body can move relatively close to the push rod 200 so that the end of the sealing body points to the end of the push rod 200 .

Optionally, when the first transfer unit and the second transfer unit are canceled in the transfer assembly mechanism 100, the transfer assembly 20 can drive the reclaiming assembly 10 and the material stabilization assembly 40 to move relative to each other to adjust the relative movement of the reclaimed assembly 10 relative to the material stabilization. The position/orientation angle of the assembly 40 is such that the first positioning reference of the adapter part 11 and the second positioning reference of the material stabilization assembly 40 point to each other. Preferably, the first positioning reference and the second positioning reference can be collinear, so that a position adjustment result in which the axis of the sealing body and the axis of the push rod 200 are collinear is obtained. In this way, the transfer driving part 32 can output the driving force along the first positioning reference, and directly drive the first pushing part 31 to push the sealing body to the push rod 200 along the axial direction of the sealing body. An abutting plane perpendicular to the first positioning reference may be provided on the first pushing portion 31 , so as to form a surface-fit contact with the end of the sealing body facing away from the push rod 200 .

In addition, in other embodiments, the first pushing portion 31 can also connect the sealing body in other ways and apply force to it, and is not limited to pushing the end of the sealing body away from the push rod 200 , for example, the first pushing portion 31 can push the sealing body against the sealing body. Pressure is applied to the circumferential side wall of the two parts, and a static friction force is generated between the two, so that they can be kept relatively fixed, and the sealing body can also move synchronously with the first pushing part 31 .

As a preferred embodiment, the transfer drive source of the transfer assembly 20 drives the relative movement and translation of the reclaimer assembly 10 and the material stabilization assembly 40 that have obtained the sealing body; of course, in other embodiments, the transfer drive source can also Drive the reclaiming assembly 10 and the stabilizing assembly 40 that have obtained the sealing body to rotate relatively to adjust the position/orientation angle of the reclaiming assembly 10 relative to the push rod 200. At this time, the transfer assembly 30 can also be connected to the reclaiming assembly 10. And follow the reclaiming assembly 10 to perform synchronous turning movement.

Optionally, when the first transfer unit and the second transfer unit are canceled in the transfer assembly mechanism 100 , the transfer assembly 20 can also drive the adapter portion 11 of the reclaimer assembly 10 to be fixedly matched with the end of the push rod 200 . As mentioned above, the end of the push rod 200 can be set to be similar in shape to the end of the adapter portion 11 , so that the push rod 200 and the adapter portion 11 can form a profiling fit, so as to improve the fixed fit between the two. The tightness and bonding strength are more smooth and labor-saving when transferring the sealing body.

Further, the transfer and assembly mechanism 100 further includes a positioning assembly 50 , and the positioning assembly 50 can at least be fixedly fitted with one end of the push rod 200 that is relatively far away from the assembly area thereof, so as to limit the radial and axial freedom of movement of the push rod 200 . .

In an embodiment not shown in the figure, the transfer assembly 30 may not necessarily be connected to the transfer assembly 20, that is, the transfer assembly 30 may not need to move synchronously with the transfer assembly 20, but is fixed at the assembly position. Wait for the reclaiming assembly 10 or the transfer assembly to carry the sealing body to move in place. Once the sealing body points to the end of the push rod 200 , the transfer assembly 30 can start to operate to transfer the sealing body on the reclaiming assembly 10 or the transfer assembly to the push rod 200 .

The technical features of the above-described embodiments can be combined arbitrarily. In order to simplify the description, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be regarded as the scope described in this specification.

Those skilled in the art should realize that the above embodiments are only used to illustrate the present invention, not to limit the present invention, as long as the above embodiments can be appropriately changed within the spirit and scope of the present invention and variations all fall within the scope of the claimed invention.

Claims (19)

1. A method of assembling a seal and an accessory for use in a medical consumable, the method comprising the steps of:

s10, obtaining a sealing body by using a material taking assembly, and connecting the material taking assembly and the sealing body into a whole;

s20, adjusting the position of the material taking assembly to enable the sealing body to point to the end part of the accessory;

s30, transferring the sealing body from the reclaiming assembly to the accessory so that the sealing body and the accessory form circumferential fit.

2. The method of assembling of claim 1, wherein step S10 of obtaining a seal with a take-out assembly and integrating the take-out assembly with the seal comprises:

the take-out assembly has a first positioning datum for defining a position of the seal body radially relative to the take-out assembly.

3. The assembly method according to claim 2, further comprising the steps of:

s15, bearing the accessories by using the material stabilizing assembly; wherein:

the material stabilizing assembly is provided with a second positioning datum which is used for limiting the position of the accessory relative to the material stabilizing assembly in the radial direction of the accessory;

step S20, namely, adjusting the position of the material taking assembly to enable the sealing body to point to the end part of the accessory, the method includes the following steps:

and S21, adjusting the position and/or angle of the material taking assembly relative to the material stabilizing assembly to enable the first positioning datum and the second positioning datum to point to each other.

4. The assembling method according to claim 3, wherein the step S21 of adjusting the position and/or angle of the material taking assembly relative to the material stabilizing assembly to make the first positioning datum and the second positioning datum point into each other comprises the following steps:

s211, adjusting at least one of the material taking assembly and the material stabilizing assembly to enable the first positioning datum and the second positioning datum to be collinear.

5. The assembling method according to claim 3 or 4, wherein the step S21 of adjusting the position and/or angle of the material taking assembly relative to the material stabilizing assembly to make the first positioning datum and the second positioning datum point into each other comprises the following steps:

s212, driving the material taking assembly to be matched with the end portion of the accessory in a copying mode, so that the material taking assembly and the accessory are relatively fixed.

6. The method of assembling of claim 2, wherein step S10 of capturing a seal body with a take-out assembly and joining said take-out assembly and said seal body together comprises the steps of:

and S11, the material taking assembly moves relatively close to the sealing body along the first positioning reference.

7. The method of assembling of claim 6, wherein said sealing body is a hollow structure; step S11, namely, when the material taking assembly moves relatively close to the sealing body along the first positioning reference, the method includes the following steps:

s111, the material taking assembly penetrates through the sealing body, and the axis of the sealing body is collinear with the first positioning reference.

8. The method of assembling of claim 1, wherein said step of transferring said sealing body from said take-out assembly to said fitment to form a circumferential engagement of said sealing body with said fitment at step S30 comprises the steps of:

and S31, abutting the transfer assembly against one end of the sealing body, which is far away from the accessory, and pushing the sealing body to slide relative to the material taking assembly by using the transfer assembly.

9. A transfer and assembly mechanism for transferring a sealing body and assembling the sealing body to an accessory, the transfer and assembly mechanism comprising:

the material taking assembly is used for obtaining the sealing body and can be connected with the sealing body into a whole;

the transfer component can transfer the sealing body by driving the material taking component and the accessory to move relatively, and enables the end part of the sealing body to face the end part of the accessory;

the transfer component can drive the sealing body to transfer to the accessory when the end part of the sealing body faces to the end part of the accessory.

10. The transfer assembly mechanism according to claim 9, wherein the take-out assembly has a first positioning reference for defining a position of the sealing body in a radial direction thereof with respect to the take-out assembly;

the shifting and assembling mechanism further comprises a material stabilizing assembly used for bearing accessories, and the material stabilizing assembly is provided with a second positioning benchmark used for limiting the position of the accessories relative to the material stabilizing assembly in the radial direction;

the transfer assembly is in driving connection with the material taking assembly or the material stabilizing assembly, and the first positioning datum and the second positioning datum point to each other by adjusting the position and/or the angle of the material taking assembly relative to the material stabilizing assembly.

11. The transfer assembly mechanism of claim 10 wherein said transfer assembly is drivingly connected to said take-off assembly and wherein said first positioning reference is co-linear with said second positioning reference by adjustment of said take-off assembly.

12. The transfer-mounting assembly mechanism according to claim 9, 10 or 11, wherein the transfer unit includes a first pushing portion for connecting the sealing body and a transfer driving portion capable of driving the first pushing portion to move relatively close to the attachment.

13. The transfer assembly mechanism according to claim 12, wherein the material taking assembly has a first positioning reference for defining a position of the sealing body in a radial direction thereof relative to the material taking assembly, and further comprising an adapter portion for forming a circumferential fit with the sealing body, the first positioning reference being an axis of the adapter portion; the first pushing part can be movably arranged in the axis direction of the adapting part.

14. The transfer assembly mechanism according to claim 13, wherein the adapter portion is adapted to penetrate a seal body and engage with an inner wall of a through hole of the seal body, and the first pushing portion is fitted around an outer periphery of the adapter portion.

15. The transfer assembly mechanism as claimed in claim 9, wherein the transfer assembly drives the material taking assembly and the fitting to move in a translational motion relative to each other to enable the sealing body to face the end of the fitting, and the transfer assembly is connected to the material taking assembly in a following manner.

16. The transfer assembly mechanism as claimed in claim 9, wherein the transfer assembly drives the material taking assembly to turn over a predetermined angle to make the sealing body face the end of the accessory, and the transfer assembly is connected to the material taking assembly in a following manner, and can follow the transfer power output of the transfer assembly and the material taking assembly to turn over the predetermined angle synchronously.

17. The transfer assembly mechanism of claim 9, wherein the transfer assembly is capable of driving the material taking assembly to be fitted to the end of the fitting in a shape-fitting manner and fixed relative to the fitting.

18. The transfer assembly mechanism of claim 9 further comprising a transfer assembly, at least one of the transfer assembly and the take-out assembly being movable relatively close to the other to enable the transfer assembly to access a seal, and the transfer assembly being movable with the seal relatively close to the fitting to enable an end of the seal to face an end of the fitting.

19. The transfer assembly mechanism according to claim 18, wherein the transfer assembly includes a first transfer unit and a second transfer unit, and the transfer assembly is capable of repeatedly switching the take-out assembly to be at the loading position or the transfer position and repeatedly switching the second transfer unit to be at the transfer position or the assembly position;

the sealing body is obtained when the material taking assembly is at the feeding position, and the sealing body is guided to be transferred to the first transfer unit when the material taking assembly is at the transfer position; the second relay unit obtains the seal body at the relay position and guides the seal body to be transferred to the attachment at the assembly position.

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