WO2019010806A1

WO2019010806A1 - Needle screwing mechanism and screwing device

Info

Publication number: WO2019010806A1
Application number: PCT/CN2017/101234
Authority: WO
Inventors: 张志平; 陈飞跃; 成睿; 朱彦添; 蒋文; 贺小军
Original assignee: 广州市赛康尼机械设备有限公司
Priority date: 2017-07-13
Filing date: 2017-09-11
Publication date: 2019-01-17
Also published as: CN107214492B; CN107214492A

Abstract

A needle screwing mechanism and a screwing device, the needle screwing mechanism comprising: a mounting base (100); a fixed wheel assembly (200), the fixed wheel assembly (200) being disposed on the mounting base (100) and comprising at least a fixed idler wheel (210) disposed at one side of a driving turnplate (700) and used for driving a barrel to rotate by means of a friction force; a rotary wheel assembly (300), the rotary wheel assembly (300) being disposed on the mounting base (100) and comprising at least one rotary idler wheel (310) disposed at the downstream of the fixed idler wheel and used for slipping when in contact with the barrel so as to prevent the barrel from being cracked due to excessive screwing between the barrel and a needle or/and the medicinal liquid from overflowing out of the barrel due to the damage of a piston in the barrel or the vertical movement of the piston; and a torsion assembly (400) rotationally disposed on the mounting base (100), the rotary idler wheel (310) being disposed on the torsion assembly (400). Therefore, the barrel and the needle are prevented from being excessively screwed caused by further rotation of the barrel, it is ensured that the barrel is not tightly pressed and cracked, and the potential risk of scrapping of a product is eliminated, the product quality is guaranteed, the product quality can be improved, and the economic benefits of enterprises can be increased.

Description

Rotary rod mechanism and spin-on device

Technical field

The invention relates to the technical field of labeling devices, in particular to a rotary rod mechanism and a spin-on device.

Background technique

In order to ensure the sanitation of the syrup without being polluted, an integrated disposable syringe has appeared in the field of medical devices, and its structure includes a needle bar, a needle tube, a rubber stopper and the like, and the syrup has been injected into the needle tube at the production stage to realize packaging, thereby ensuring It will not be polluted during transportation, use, etc. The one-piece disposable syringe is produced by screwing the aligned needle bars into the rubber plugs in the needle tube one by one, and attaching a label to the outside of the needle tube. However, there is no effective processing mechanism for the needle bar and the needle tube to be screwed in the existing labeling device, so that the assembly quality of the needle bar and the needle tube cannot meet the product requirements, and the tightening degree of the needle bar and the needle tube cannot be reliably ensured, which is easy to cause The needle bar and the needle tube are excessively tightened to cause the needle tube to be crushed and broken, and the piston in the needle tube is damaged, or the piston is displaced up and down to overflow the tube, thereby causing the product to be scrapped, which affects the product quality and the economic benefit of the production enterprise.

Summary of the invention

Based on this, it is necessary for the present invention to provide a rotary rod mechanism and a screw-on device, which can reliably tighten the needle bar and the needle tube, ensure product quality, and avoid the problem that the product is scrapped due to over-tightening and causing compression and rupture of the needle tube. It is conducive to improving product quality and economic benefits of the company.

Its technical solutions are as follows:

A rotary mechanism comprising:

Mounting seat

a fixed wheel assembly, the fixed wheel assembly is disposed on the mounting seat, and the fixed wheel assembly includes at least one fixed idler pulley for being disposed on one side of the active turntable and driven by friction Needle rotation;

a rotating wheel assembly, the rotating wheel assembly is disposed on the mounting seat, and the rotating wheel assembly package Included in the at least one rotary idler disposed downstream of the fixed idler, the rotary idler is used for sliding contact with the needle tube to prevent the needle tube and the needle rod from being excessively tightened and broken, and the piston inside the needle tube is damaged, or the piston is up and down Displacement causes the syrup in the tube to overflow; and

a torsion assembly rotatably disposed on the mount, the rotary idler being disposed on the torsion assembly, and the torsion assembly for providing the rotary idler rotational torque.

When the above-mentioned rotating rod mechanism is used, by mounting the torsion assembly on the mounting seat and adjusting the appropriate rotational torque value, at least one fixed idler of the fixed wheel assembly is then disposed on one side of the active turntable so as to rotate with the active turntable. When the needle tube is in rotational contact with the fixed idler, the needle tube is rotated by the friction force to complete the screwing with the needle rod clamped on the clamping rod mechanism; after that, the needle tube and the needle rod which are initially tightened continue to follow the initiative. The turntable rotates to at least one rotary idler located downstream of the fixed idler pulley, and the rotary idler achieves slipping under the appropriate rotational torque provided by the torsion assembly, thereby preventing further rotation of the needle tube and excessive tightening with the needle bar, ensuring that the needle tube does not Squeezing and rupturing eliminates the safety hazard of product scrapping, guarantees product quality, and is conducive to improving product quality and economic benefits.

The technical solution of the present application is further described below:

In one of the embodiments, three of the fixed idlers are included, and the three fixed idlers are sequentially spaced apart along the rotational direction of the active turntable. In this way, the needle tube is driven by the friction of the three fixed idlers in sequence to achieve three rotations, thereby ensuring that certain large-rotation syringe products achieve reliable rotation of the needle bar and the needle tube.

In one of the embodiments, the three fixed idlers are staggered in the longitudinal direction. In this way, interference collision between two adjacent fixed idlers can be avoided, and the size of the occupied space can be reduced, so that the overall volume of the device is more compact and light.

In one embodiment, the torsion assembly includes a torsion spring, a fixing seat disposed on the mounting seat and having a mounting hole, a friction plate group and a support rod group rotatably disposed in the mounting hole, The support rod set includes a sleeve provided with an annular recess, a rotary rod embedded in the sleeve and configured to support the rotary idler, and the hole wall of the mounting hole protrudes from the center direction with an annular card The torsion spring is disposed between the annular recess and the annular card table, and the friction plate group includes a first friction plate fixed to an end of the rotating rod, and is disposed in the mounting hole Inner and rotating with the first friction plate a second friction plate and a friction body disposed between the first friction plate and the second friction plate for generating a frictional action. Thus, by adjusting the assembly degree of the support rod group and the mounting hole of the fixing seat, the tightness of the torsion spring can be flexibly adjusted, and the friction rotation of the first friction plate, the friction body and the second friction plate can be matched, so that the torque component product can be appropriately rotated. Torque is applied to the rotating idler to ensure a protective slip when the needle bar is in contact, ensuring that the needle is not torn.

In one embodiment, the hole wall of the mounting hole is provided with a first thread, and the outer cylinder wall of the sleeve is provided with a second thread, and the first thread is screwed with the second thread. This makes it easy to adjust the screwing depth of the sleeve and the fixed seat for the syringe products of different sizes and specifications, and then adjust the torque of the torsion spring to an appropriate value to meet the protection requirements of different products and improve the applicable range of the device.

In one embodiment, the mounting seat is further provided with a through slot and a rotating shaft located in the through slot, and a rotating portion of the rotating rod away from the rotating idler is provided with a rotating portion, and the rotating portion is rotatable The utility model is disposed on the rotating shaft and is matched with the groove walls on both sides of the through groove. In this way, the rotating rod can realize a small angle swing on the rotating shaft to ensure that the rotating idler wheel achieves a certain position when the needle tube passes and contacts, thereby protecting the needle tube.

In one embodiment, the torsion assembly includes a first torsion assembly and a second torsion assembly spaced apart in a rotational direction of the active dial, the rotary idler including a first rotary idler and a second rotary idler The first rotary idler is disposed on the first torsion assembly, and the second rotary idler is disposed on the second torsion assembly. This can double protect the needle tube and further ensure product quality.

In one embodiment, the utility model further includes an adjusting nut and an adjustable tension spring, the mounting seat is provided with an adjusting screw hole, and the adjusting nut is screwed into the adjusting screw hole, and one end of the adjustable tension spring is The rotating portion abuts and the other end abuts against the adjusting nut. In this way, the tension of the rotary rod can be flexibly adjusted, so that the rotary idler can be adapted to the compression of the different sizes of the needle tube to avoid damage caused by excessive pressing force.

The present invention also provides a spin-on device comprising an active turntable and a rotary rod mechanism as described above, the edge of the active turntable being recessed inwardly with at least one receiving recess for receiving a needle tube, A support bearing is rotatably mounted on each side of the recessed portion, the rotary rod mechanism is spaced apart from the active turntable, and two of the support bearings cooperate with the fixed idler to form a spin-fit pitch. , two The bearing between the bearing and the rotating idler forms a spacing.

When the above-mentioned spin-fit device is in operation, the rotary rod mechanism is mounted on one side of the rotary turntable, and the at least one fixed idler of the fixed wheel assembly is arranged by mounting the torsion assembly on the mount and adjusting the appropriate rotational torque value. One side of the active turntable, so that when the needle tube rotated by the active turntable is in rotational contact with the fixed idler, the needle tube is rotated by the frictional force to complete the screwing with the needle bar clamped on the clamping rod mechanism; The needle and needle bar that complete the initial tightening continue to rotate with the active turntable to at least one rotary idler located downstream of the fixed idler, and the rotary idler achieves slipping under the appropriate rotational torque provided by the torsion assembly, thereby avoiding further rotation of the needle. The result is excessive tightening with the needle bar, ensuring that the needle tube will not be crushed and broken, eliminating the safety hazard of product scrapping, ensuring product quality, and improving product quality and economic benefits of the enterprise.

DRAWINGS

1 is a front elevational view showing a rotary lever mechanism according to an embodiment of the present invention;

2 is a side view showing the structure of a rotary drum of the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a spin-on device according to an embodiment of the present invention.

Description of the reference signs:

100, mount, 110, through slot, 120, shaft, 200, fixed wheel assembly, 210, fixed idler, 300, rotating wheel assembly, 310, rotary idler, 400, torsion assembly, 410, torsion spring, 420, Fixing seat, 421, annular card table, 430, friction plate set, 431, first friction plate, 432, second friction plate, 440, support rod set, 441, sleeve, 441a, annular recessed table, 442, rotary rod , 500, adjusting nut, 600, adjustable tension spring, 700, active turntable, 710, receiving groove, 800, bearing support.

Detailed ways

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention.

It should be noted that when an element is referred to as being "fixed on", "set on", or "mounted on" another component, it It is possible to directly on another component or to have a central component. When an element is considered to be "connected" to another element, it can be directly connected to the other element or the central element can be present at the same time. The specific manner in which one element is fixedly connected to the other element can be achieved by the prior art. Further, it is preferable to use a fixing method of a screw connection.

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, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" in the present invention do not represent a specific number and order, but are merely used for distinguishing names.

As shown in FIG. 1 , a rotating rod 442 mechanism according to an embodiment of the present invention includes: a mounting base 100; a fixed wheel assembly 200, the fixed wheel assembly 200 is disposed on the mounting base 100, and the The fixed wheel assembly 200 includes at least one fixed idler gear 210 for arranging on one side of the drive carousel 700 and driving the needle tube to rotate by friction; a rotating wheel assembly 300, the rotating wheel assembly 300 being disposed on The mounting base 100, and the rotating wheel assembly 300 includes at least one rotating idler 310 disposed downstream of the fixed idler 210, the rotating idler 310 is used for sliding contact with the needle tube to prevent the needle and the needle The rod is excessively tightened and broken, and the piston in the needle tube is damaged, or the piston is displaced up and down to overflow the potion; and the torsion assembly 400 is rotatably disposed on the mounting seat 100, the rotating idler 310 is disposed on the torsion assembly 400, and the torsion assembly 400 is configured to provide a rotational torque of the rotary idler 310.

When the above-mentioned rotating rod 442 mechanism is used, by mounting the torsion assembly 400 on the mounting base 100 and adjusting a suitable rotational torque value, at least one fixed idler gear 210 of the fixed wheel assembly 200 is then disposed on one side of the active turntable 700. When the needle tube rotated by the active turntable 700 is in rotational contact with the fixed idler gear 210, the needle tube is rotated by the frictional force to complete the spin-fit with the needle bar clamped on the clamping rod mechanism; then the preliminary tightening is completed. The needle and needle bar continue to rotate with the active carousel 700 to at least one of the rotary idlers 310 downstream of the fixed idler gear 210. The rotary idler 310 achieves slippage under the appropriate rotational torque provided by the torsion assembly 400, thereby avoiding further needle insertion. Rotation leads to the needle rod The degree of tightening ensures that the needle tube will not be crushed and broken, which eliminates the safety hazard of product scrapping, ensures product quality, and is conducive to improving product quality and economic benefits of the enterprise.

Referring to FIG. 1, on the basis of the above embodiment, three fixed idlers 210 are included, and the three fixed idlers 210 are sequentially disposed along the rotational direction of the active turntable 700. This allows the needle to be driven three times in turn by the friction of the three fixed idlers 210, thereby ensuring that certain large pitch syringe products achieve reliable and efficient spin-on of the needle and needle. Specifically, the fixed idler 210 may be made of a material or a structure of a plastic wheel or a steel wheel outer peripheral apron, which can improve the contact friction with the needle tube and avoid slippage.

Further, three of the fixed idlers 210 are staggered in the longitudinal direction. In this way, the interference collision between the two adjacent fixed idlers 210 can be avoided, and the size of the occupied space can be reduced, so that the overall volume of the device is more compact and light. Of course, as an alternative embodiment, the number and arrangement of the fixed idlers 210 in other embodiments may also be other variations.

In addition, the torsion assembly 400 includes a torsion spring 410, a fixing base 420 disposed on the mounting base 100 and having a mounting hole, a friction plate group 430 rotatably disposed in the mounting hole, and a support rod group 440. The support rod set 440 includes a sleeve 441 provided with an annular recess 441a, a rotary rod 442 embedded in the sleeve 441 and configured to support the rotary idler 310, the hole wall of the mounting hole is centered An annular pin table 421 is protruded from the direction, and the torsion spring 410 is pressed between the annular recess 441a and the annular card table 421. The friction plate group 430 includes an end fixed to the rotating rod 442. a first friction plate 431 of the portion, a second friction plate 432 disposed in the mounting hole and rotatably engaged with the first friction plate 431, and a first friction plate 431 and the second portion disposed on the first friction plate 431 A friction body between the friction plates 432 for generating friction. Thus, by adjusting the assembly degree of the support hole group 440 and the mounting hole of the fixing base 420, the tightness of the torsion spring 410 can be flexibly adjusted, and the frictional rotation of the first friction piece 431 and the second friction piece 432 can be matched to make the torque component 400 product. A suitable rotational torque imparts to the rotating idler 310 to ensure a protective slip when in contact with the needle bar, ensuring that the needle is not torn. Specifically, the bottom of the hole of the mounting hole is provided with an opening, and the fixing base is fixed to the mounting base 100. The end of the fixing shaft extends through the opening and is fixedly connected with the second friction plate 432, so that the second friction plate 432 does not The first friction plate 431 is rotated, and the frictional force is generated by the friction body.

Further, the hole wall of the mounting hole is provided with a first thread, and the outer cylinder wall of the sleeve 441 is provided with a second thread, and the first thread is screwed with the second thread. Therefore, it is convenient for the syringe products of different sizes and specifications to adjust the screwing depth of the sleeve 441 and the fixing seat 420, thereby adjusting the torque of the torsion spring 410 to an appropriate value to meet the protection requirements of different products and to improve the applicable range of the device.

As shown in FIG. 2, the mounting base 100 is further provided with a through slot 110 and a rotating shaft 120 located in the through slot 110. The rotating rod 442 is disposed away from one end of the rotating idler 310. The rotating portion is rotatably disposed on the rotating shaft 120 and is in clearance with the groove walls on both sides of the through groove 110. In this way, the rotating rod 442 can realize a small angle swing on the rotating shaft 120 to ensure that the rotating idler 310 achieves a certain position when the needle tube passes and contacts, thereby protecting the needle tube.

As shown in FIG. 1, on the basis of any of the above embodiments, the torsion assembly 400 includes a first torsion assembly and a second torsion assembly spaced apart along a rotational direction of the active carousel 700, the rotary idler 310 The first rotary idler 310 and the second rotary idler 310 are disposed on the first torsion assembly, and the second rotary idler 310 is disposed on the second torsion assembly . This can double protect the needle tube and further ensure product quality.

As shown in FIG. 2 and FIG. 3, on the basis of any of the above embodiments, an adjustment nut 500 and an adjustable tension spring 600 are further included. The mounting base 100 is provided with an adjusting screw hole, and the adjusting nut 500 is screwed on In the adjustment screw hole, one end of the adjustable tension spring 600 abuts against the rotating portion, and the other end abuts against the adjusting nut 500. In this way, the tension of the rotating rod 442 can be flexibly adjusted, so that the rotating idler 310 can be adapted to the compression of the different sizes of the needle tube to avoid damage caused by excessive pressing force.

Referring to FIG. 3, the present invention further provides a spin-on device comprising an active turntable 700 and a rotating rod 442 mechanism as described above, the edge of the active turntable 700 being recessed inwardly with at least one capacity for receiving the needle tube a receiving groove 800 is disposed on each side of the receiving groove 710, and a supporting bearing 800 is rotatably mounted on the two sides of the receiving groove 710. The rotating rod 442 mechanism is spaced apart from the driving turntable 700, and the two supporting bearings are disposed. The engagement between the 800 and the fixed idler gear 210 forms a spin-on spacing, and the two bearing bearings 800 cooperate with the rotary idler 310 to form a seating pitch.

When the above-mentioned screwing device is in operation, the rotating rod 442 mechanism is mounted on one side of the rotating turntable, and the twisting is performed. The force assembly 400 is mounted on the mount 100 and adjusted for a suitable rotational torque value, after which at least one fixed idler 210 of the fixed wheel assembly 200 is disposed on one side of the drive disc 700 so as to rotate with the drive disc 700 When the needle tube is in rotational contact with the fixed idler gear 210, the needle tube is rotated by the frictional force to complete the screwing with the needle bar clamped on the clamping rod mechanism; after that, the needle tube and the needle bar that complete the preliminary tightening continue with the active turntable 700. Rotating to at least one rotary idler 310 downstream of the fixed idler gear 210, the rotary idler 310 achieves slippage under the appropriate rotational torque provided by the torsion assembly 400, thereby preventing further rotation of the needle tube resulting in excessive tightening of the needle bar, ensuring The needle tube will not be crushed and ruptured, which eliminates the safety hazard of product scrapping, ensures product quality, and is conducive to improving product quality and economic benefits of the enterprise.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A rotary rod mechanism, comprising:

Mounting seat

a fixed wheel assembly, the fixed wheel assembly is disposed on the mounting seat, and the fixed wheel assembly includes at least one fixed idler pulley for being disposed on one side of the active turntable and driven by friction Needle rotation;

a rotating wheel assembly, the rotating wheel assembly is disposed on the mount, and the rotating wheel assembly includes at least one rotating idler disposed downstream of the fixed idler, the rotating idler is for contacting the needle tube Slip to prevent the needle tube and the needle rod from being over-tightened and ruptured, and the piston in the needle tube is damaged, or the piston is displaced up and down to overflow the tube;

a torsion assembly rotatably disposed on the mount, the rotary idler being disposed on the torsion assembly, and the torsion assembly for providing the rotary idler rotational torque.
A rotary lever mechanism according to claim 1, comprising three said fixed idlers, and said three fixed idlers are sequentially spaced apart in a rotational direction of said active turntable.
The rotary mechanism according to claim 2, wherein the three fixed idlers are staggered in the longitudinal direction.
The rotating rod mechanism according to claim 1, wherein the torsion assembly comprises a torsion spring, a fixing seat disposed on the mounting seat and provided with a mounting hole, and friction rotatably disposed in the mounting hole a sheet set and a support rod set, the support rod set including a sleeve provided with an annular recess, a rotary rod embedded in the sleeve and configured to support the rotary idler, the hole wall of the mounting hole An annular ring is protruded from a central direction, the torsion spring is pressed between the annular recess and the annular card, and the friction plate group includes a first friction fixed to an end of the rotating rod. a second friction plate disposed in the mounting hole and rotatably engaged with the first friction plate, and a friction disposed between the first friction plate and the second friction plate for generating friction body.
The rotary rod mechanism according to claim 4, wherein the hole wall of the mounting hole is provided with a first thread, and the outer cylinder wall of the sleeve is provided with a second thread, the first thread and the first thread The second thread is screwed.
The rotating rod mechanism according to claim 4, wherein the mounting seat further comprises a through slot and a rotating shaft located in the through slot, wherein the rotating rod is rotated away from an end of the rotating idler The rotating portion is rotatably disposed on the rotating shaft and is in clearance with the groove walls on both sides of the through groove.
The rotary mechanism according to claim 1, wherein said torsion assembly comprises a first torsion assembly and a second torsion assembly spaced apart in a rotational direction of said active dial, said rotary idler including a first rotation An idler pulley and a second rotary idler, the first rotary idler is disposed on the first torsion assembly, and the second rotary idler is disposed on the second torsion assembly.
The rotating rod mechanism according to claim 6, further comprising an adjusting nut and an adjustable tension spring, wherein the mounting seat is provided with an adjusting screw hole, and the adjusting nut is screwed into the adjusting screw hole, One end of the adjustable tension spring abuts against the rotating portion, and the other end abuts against the adjusting nut.
A spin-on device comprising an active turntable and a rotary rod mechanism according to any one of claims 1 to 8, wherein an edge of the active turntable is recessed inwardly with at least one capacity for receiving a needle tube a groove is disposed on each side of the accommodating groove, and a support bearing is rotatably mounted, the screw mechanism is spaced apart from the active turntable, and the two support bearings and the fixed idle The rotation between the wheels forms a spin-on spacing, and the two bearing bearings cooperate with the rotary idler to form a spacing.