阅读说明：本技术 针管检堵机构 (Needle tube blockage detecting mechanism ) 是由 王通聪 于 2019-12-02 设计创作，主要内容包括：本发明提供了一种针管检堵机构,属于医疗器械生产设备技术领域。它解决了现有的针管检堵机构检堵不够准确的问题。本针管检堵机构,包括设置在工作台上的支架,工作台上设有用于定位装在工装条上的注射器的定位机构,工作台上设有能够对工装条上的注射器针头吹气的吹气组件,工作台的上侧设有升降板以及带动升降板往复升降的升降机构,升降板上固连有安装座,安装座上设有能够摆动的平衡片,安装座上竖直设有进气孔且进气孔与平衡片相对应,进气孔位于平衡片的一端的下侧与对应工装条的注射器的上侧,安装座上设有感应头且感应头能够感应平衡片的另一端。本针管检堵机构具有检堵准确且检堵效率较高的优点。(The invention provides a needle tube blockage detecting mechanism, and belongs to the technical field of medical instrument production equipment. It has solved the stifled problem that is not accurate enough that is examined to current needle tubing and examines stifled mechanism. This stifled mechanism is examined to needle tubing, including setting up the support on the workstation, be equipped with the positioning mechanism who is used for fixing a position the syringe of dress on the frock strip on the workstation, be equipped with the subassembly of blowing that can blow to the syringe needle on the frock strip on the workstation, the upside of workstation is equipped with the lifter plate and drives the elevating system of the reciprocal lift of lifter plate, the mount pad has been linked firmly on the lifter plate, be equipped with the balanced piece that can swing on the mount pad, it corresponds with the balanced piece to vertically be equipped with inlet port and inlet port on the mount pad, the inlet port is located the downside of the one end of balanced piece and the upside of the syringe that corresponds the frock strip, be equipped with the other end that inductive head and inductive head can. The needle tube blockage detecting mechanism has the advantages of accurate blockage detection and high blockage detecting efficiency.)

1. The needle tube blockage detecting mechanism is characterized in that a lifting plate (7) and a lifting mechanism (8) driving the lifting plate (7) to reciprocate are arranged on the upper side of the workbench (1), a mounting seat (9) is fixedly connected onto the lifting plate (7), a balance sheet (10) capable of swinging is arranged on the mounting seat (9), an air inlet hole (9c) is vertically arranged on the mounting seat (9), and the air inlet hole (9c) corresponds to the balance sheet (10), the air inlet holes (9c) are positioned at the lower side of one end of the balance sheet (10) and the upper side of the injector (2) corresponding to the tooling strip (3), the other end of the mounting seat (9) is provided with an induction head (11), and the induction head (11) can induce the other end of the balance sheet (10).

2. The needle tube blockage detecting mechanism according to claim 1, wherein a row of mounting grooves (9a) are formed in the mounting seat (9), a row of air inlets (9c) are formed in the mounting seat (9), the air inlets (9c) correspond to the mounting grooves (9a) one by one, the air inlets (9c) are communicated with the corresponding mounting grooves (9a), balancing pieces (10) are arranged in the mounting grooves (9a), the balancing pieces (10) are slightly smaller than the mounting grooves (9a), and the balancing pieces (10) can swing in the mounting grooves (9 a).

3. The needle tube blockage detecting mechanism according to claim 1, wherein two rows of mounting grooves (9a) are arranged in parallel on the mounting seat (9), the two rows of mounting grooves (9a) are sequentially arranged at intervals, the inner ends of the two rows of mounting grooves (9a) are all positioned on the same straight line, a row of air inlet holes (9c) are formed in the mounting seat (9), the air inlet holes (9c) are communicated with the corresponding mounting grooves (9a), balancing pieces (10) are arranged in the mounting grooves (9a), the balancing pieces (10) are slightly smaller than the mounting grooves (9a), and the balancing pieces (10) can swing in the mounting grooves (9 a).

4. The needle tube blockage detecting mechanism according to claim 2 or 3, wherein the balance piece (10) comprises a piece body (10a), the two sides of the piece body (10a) are provided with symmetrically arranged convex bodies (10b), the two side edges of the mounting groove (9a) are provided with positioning grooves (9b) for embedding the convex bodies (10b), the upper side of the mounting seat (9) is fixedly connected with a cover plate (12), and the cover plate (12) is positioned on the upper side of the balance piece (10).

5. The needle tube blockage detecting mechanism according to claim 4, wherein the cover plate (12) is provided with an air inlet cavity and a blowing hole (12a) communicated with the air inlet cavity, and the blowing hole (12a) faces one end of the balance sheet (10).

6. The needle tube blockage detecting mechanism according to claim 1, 2 or 3, wherein the blowing assembly (6) comprises a lower mounting seat (6a) and a second lifting cylinder (6b) for driving the lower mounting seat (6a) to reciprocate, a lower blowing rod (6c) is fixedly connected to the lower mounting seat (6a), and an air inlet (6c1) and an air outlet (6c2) are arranged on the lower air inlet rod (3 a).

7. The needle tube blockage detecting mechanism according to claim 1, 2 or 3, wherein the positioning mechanism (5) comprises a first positioning block (5a) and a second positioning block (5b) which are arranged in parallel, a channel for the horizontal and transverse passing of the tooling strip (3) is formed between the first positioning block (5a) and the second positioning block (5b), a convex blocking edge (5c) is arranged on the inner side of the upper end of the first positioning block (5a) and the second positioning block (5b), the blocking edge (5c) can be abutted against the upper end face of the tooling strip (3), the positioning mechanism (5) comprises a translation seat (5d) positioned on one side of the first positioning block (5a) and a translation cylinder (5e) capable of driving the translation seat (5d) to horizontally and longitudinally move, a clamping and connecting plate (5f) arranged in parallel to the tooling strip (3) is arranged on the translation seat (5d), one row of clamping grooves I (5f1) on one side of the clamping plate I (5f) and the needle base (2a) of the syringe (2) can be embedded into the clamping grooves I (5f 1).

8. The needle tube blockage detecting mechanism according to claim 7, wherein a second clamping plate (5g) is arranged on the translation seat (5d), the clamping plate II (5g) is positioned at the upper side of the clamping plate I (5f), one side of the clamping plate II (5g) is provided with a row of clamping grooves II (5g1) and one side of the needle tube (2b) of the injector (2) can be embedded into the clamping grooves II (5g1), a blocking plate (5h) and a translation cylinder II (5j) for driving the blocking plate (5h) to horizontally and longitudinally move are arranged on the workbench (1), the blocking plate (5h) is positioned at one side of the second clamping plate (5g) and the blocking plate (5h) is arranged in parallel with the second clamping plate (5g), the blocking plate (5h) can be used for the other side of the needle tube (2b) of the injector (2) to abut against.

9. The needle tube blockage detecting mechanism according to claim 7, wherein one side of the second positioning block (5b) is provided with a second translation seat (5i) capable of horizontally and longitudinally reciprocating, the second translation seat (5i) is provided with a blocking plate (5h), the other side of the needle tube (2b) of the injector (2) can be abutted by the blocking plate (5h), the workbench (1) is provided with a second translation cylinder (5j) horizontally and transversely arranged, one side of the second translation seat (5i) is axially and fixedly connected with a roller (5k), a piston rod of the second translation cylinder (5j) is fixedly connected with a push block (5m), and the push block (5m) can push the roller (5k) and enable the second translation seat (5i) to horizontally and longitudinally move.

10. The needle tube blockage detecting mechanism according to claim 9, wherein two groups of needle tube blockage detecting mechanisms are arranged on the workbench (1), a second translation cylinder (5j) is arranged between two second translation seats (5i) of the two groups of needle tube blockage detecting mechanisms, a push block (5m) is fixedly connected to a piston rod of the second translation cylinder (5j), the outer end of the push block (5m) is provided with a conical surface, and the conical surface can push rollers (5k) of the two second translation seats (5i) simultaneously.

Technical Field

The invention belongs to the technical field of medical instrument production equipment, relates to a blockage detecting mechanism, and particularly relates to a needle tube blockage detecting mechanism.

Background

The medical injector needle consists of a needle tube, a needle seat and a sheath. In the production process, particularly when the surface of the needle tube is coated with a lubricant, the needle tube is easily blocked, so that a seriously unqualified product is caused, and the needle blockage detection is extremely important. The conventional method is to input compressed air into one side of the needle tube and detect the output pressure at the other end by a pressure sensor to judge whether the needle is blocked. This technique has the following drawbacks: (1) with the continuous improvement of manufacturing technology, the inner diameter of the needle tube is smaller and smaller, the air flow capable of passing through the needle tube is smaller and smaller, and the time for forming a certain pressure at the output end is longer and longer. The existing pressure sensor is difficult to meet the detection requirement, often has false detection and is low in efficiency. The increase of the pressure of the input end can increase a lot of difficulties for the tightness of the detection system, and the common production line does not have the requirement of high-pressure compressed air, so that the cost is increased greatly; (2) for efficiency reasons, the distance between the needles on the production line is very short, and it is difficult to have a space for placing a pressure sensor in a low-pressure range.

For example, the chinese patent document discloses an automatic blockage detecting and removing device for a medical syringe needle (application No. 201420617984.3), comprising: the detection device comprises a rack, a blockage detection air blowing pipe, a first sealing ring, a tooling strip, a photoelectric sensor, a detection cavity, a sensing object, a pressing plate, an air blowing pipe, a second sealing ring, a needle seat, a needle tube, a lower hole, an upper hole, a waste-rejecting air blowing pipe and a waste-rejecting station The first sealing ring forms an air pressure input part, the photoelectric sensor, the detection cavity, the inductor, the pressing plate, the air blowing pipe, the second sealing ring, the lower hole and the upper hole form a detection part, and the waste removing air blowing pipe and the waste removing station form a removing part. However, in the automatic blockage detection of the syringe needle, air is blown into the syringe needle through the air blowing pipe to push the inductor, and whether the inductor moves is detected through the photoelectric sensor to judge whether the syringe needle is blocked, so that the blockage detection is not accurate enough.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a needle tube blockage detection mechanism which is accurate in blockage detection and high in blockage detection efficiency.

The purpose of the invention can be realized by the following technical scheme: the automatic assembly line of the injector comprises a workbench, the needle tube blockage detecting mechanism comprises a bracket arranged on the workbench, the workbench is provided with a positioning mechanism for positioning the injector arranged on the tool strip, the workbench is provided with an air blowing assembly capable of blowing air to the injector needle head on the tool strip, it is characterized in that the upper side of the workbench is provided with a lifting plate and a lifting mechanism which drives the lifting plate to reciprocate, the lifting plate is fixedly connected with a mounting seat, the mounting seat is provided with a balance sheet capable of swinging, the mounting seat is vertically provided with an air inlet hole which corresponds to the balancing sheet, the air inlet hole is positioned at the lower side of one end of the balancing sheet and at the upper side of the injector corresponding to the tool strip, the mounting seat is provided with an induction head which can induce the other end of the balance sheet.

During operation, the tool strip provided with the syringe needle is conveyed to the needle tube blockage detection mechanism, the syringe on the tool strip is positioned on the workbench through the positioning mechanism, the lifting mechanism drives the mounting seat to descend to the syringe needle, then the lower end of the syringe needle is blown through the blowing assembly, then the blown gas passes through the air inlet hole in the mounting hole and blows one end of the balance sheet, whether the other end of the balance sheet swings through the induction head, and therefore whether the syringe needle is blocked or not is obtained, and the device has the advantages of accurate blockage detection and high blockage detection efficiency.

In the needle tube blockage detecting mechanism, a row of mounting grooves are formed in the mounting seat, a row of air inlet holes are formed in the mounting seat, the air inlet holes correspond to the mounting grooves one to one, the air inlet holes are communicated with the corresponding mounting grooves, balancing pieces are arranged in the mounting grooves, and the balancing pieces are slightly smaller than the mounting grooves and can swing in the mounting grooves. The balance sheet is placed and positioned in the mounting groove, and the mounting groove has the advantages of simple structure, convenience in dismounting and convenience in maintenance.

In the needle tube blockage detecting mechanism, the mounting seat is provided with two rows of mounting grooves which are arranged in parallel, the two rows of mounting grooves are arranged at intervals in sequence, the inner ends of the two rows of mounting grooves are positioned on the same straight line, the air inlet holes are communicated with the corresponding mounting grooves, the mounting grooves are internally provided with balance pieces, and the balance pieces are slightly smaller than the mounting grooves and can swing in the mounting grooves. Through setting up two rows of mounting grooves, make the inner of two rows of mounting grooves be located same straight line, have compact structure's advantage.

In stifled mechanism is examined to foretell needle tubing, the balancing piece include the lamellar body, the both sides of lamellar body be equipped with the convex body that the symmetry set up, the both sides border of mounting groove be equipped with the constant head tank that supplies the convex body embedding, the upside of mount pad link firmly the apron just the apron be located the upside of balancing piece. Inlay in the constant head tank through the convex body, make the balance piece can swing around the convex body, have simple structure and the better advantage of location effect.

In the needle tube blockage detecting mechanism, the cover plate is provided with an air inlet cavity and an air blowing hole communicated with the air inlet cavity, and the air blowing hole faces one end of the balance sheet. One end of the balance sheet is blown through the blowing hole, so that the balance sheet is convenient to reset, the next needle tube is convenient to detect blockage, and the device has the advantage of reliable work.

In the needle tube blockage detecting mechanism, one end of the mounting seat is fixedly connected with an upper blowing rod, an outlet of the upper blowing rod is arranged downwards, and the upper blowing rod faces one end of the balance sheet. Blow the lower extreme of syringe needle through the subassembly of blowing, whether swing back through the other end of inductive head response balance piece, blow the one end of balance piece through last blowing rod and be convenient for balance piece reset to examine stifled to next syringe, have the advantage of reliable operation.

In the needle tube blockage detecting mechanism, the tool strip is inserted and fixedly connected with the air inlet rod, the upper end of the air inlet rod extends out of the upper end of the tool strip, and the upper end of the air inlet rod is used for inserting the needle seat of the injector. The air inlet rod is arranged on the tool strip, so that the needle seat of the injector can be conveniently positioned, and the tool strip can be conveniently blown through the air inlet rod.

In stifled mechanism is examined to foretell needle tubing, the subassembly of blowing include mount pad and drive down the reciprocal lift cylinder two that goes up and down of mount pad, lower mount pad on link firmly down the pole of blowing, lower blow the pole on be equipped with air inlet and one row of gas outlet, the air inlet on the pole of blowing down can with the frock strip on the pole one-to-one corresponding that admits air, lift cylinder two can drive down the pole that blows and rise the messenger the gas outlet of the pole of blowing down be linked together with the pole that admits air on the frock strip. The lifting cylinder II drives the lower blowing rod to rise so that the air outlet of the lower blowing rod is communicated with the corresponding air inlet rod on the tool strip, the syringe needle is aligned, and the device has the advantages of being simple in structure and convenient to blow.

In the needle tube blockage detecting mechanism, the positioning mechanism comprises a first positioning block and a second positioning block which are arranged in parallel, a channel for a tool strip to pass horizontally is formed between the first positioning block and the second positioning block, a convex blocking edge is arranged on the inner side of the upper end of the first positioning block and the inner side of the upper end of the second positioning block, and the blocking edge can be abutted to the upper end face of the tool strip. The inner side wall of the upper end of the first positioning block and the inner side wall of the upper end of the second positioning block are provided with blocking edges for abutting against the upper end face of the tool strip, so that a good limiting effect is achieved on the tool strip, and the reliability of blockage detection is improved.

In stifled mechanism is examined to foretell needle tubing, positioning mechanism including the translation seat that is located one side of locating piece and can drive translation seat horizontal longitudinal movement's translation cylinder one, the translation seat on be equipped with the joint board one that is on a parallel with the setting of frock strip, one row of draw-in groove one in one side of joint board one just the needle file of syringe can be embedded into draw-in groove one. When the syringe on the frock strip is fixed a position, drive the horizontal longitudinal movement of translation seat through the translation cylinder, make draw-in groove joint of joint board one on the needle file of syringe, make the up end of the lug of the lower extreme of syringe needle file support and lean on the lower terminal surface of joint board one, realize the screens to the needle file of syringe, have the better and comparatively simple advantage of structure of locate effect.

In the needle tube blockage checking mechanism, the translation seat is provided with a clamping plate II, the clamping plate II is located on the upper side of the clamping plate I, one side of the clamping plate II is provided with a row of clamping grooves II, and one side of the needle tube of the injector can be embedded into the clamping grooves II. When the injector on the tool strip is positioned, the translation cylinder drives the translation seat to horizontally and longitudinally move, and meanwhile, the clamping groove II of the clamping plate II is clamped on the needle tube of the injector, so that a better positioning effect is achieved on the needle tube.

In stifled mechanism is examined to foretell needle tubing, the workstation on be equipped with the barrier plate and drive the horizontal longitudinal movement's of barrier plate translation cylinder two, the barrier plate be located one side of joint board two just the barrier plate be on a parallel with joint board two and set up, the barrier plate can supply the opposite side of the needle tubing of syringe to support and lean on. The second translation cylinder drives the blocking plate to horizontally and longitudinally move so that one side of the needle blocking tube abuts against the blocking plate, and the needle tube has a good positioning effect.

In stifled mechanism is examined to foretell needle tubing, one side of locating piece two be equipped with can horizontal longitudinal reciprocating motion's translation seat two, the barrier plate link firmly on translation seat two, the workstation on be equipped with the horizontal translation cylinder two that sets up of level, one side axial of translation seat two link firmly the gyro wheel, the piston rod of translation cylinder two link firmly the ejector pad, the ejector pad can promote the gyro wheel and make two horizontal longitudinal motions of translation seat. The positioning block II is provided with a guide rail which is horizontally and longitudinally arranged, the translation seat II is fixedly connected with a slide block, the guide rail is embedded in a chute of the slide block, the push block is provided with an inclined surface, and the inclined surface of the push block pushes the roller to enable the translation seat II to horizontally and longitudinally move.

In the needle tube blockage detecting mechanism, the workbench is provided with two needle tubes for detecting the blockage, two translation seats II of the blockage detecting mechanism are provided with two translation cylinders II, piston rods of the translation cylinders II are fixedly connected with push blocks, the outer ends of the push blocks are provided with conical surfaces, and the conical surfaces can simultaneously push rollers of the two translation seats II. The two pushing blocks of the translation cylinder simultaneously push the two translation seats to horizontally and longitudinally move, so that the pushing blocks are stressed uniformly, and the device has the advantages of stable work and compact structure.

Compared with the prior art, the needle tube blockage detecting mechanism has the advantages that:

1. the mounting seat is driven to descend to the position of the syringe needle through the lifting mechanism, then the lower end of the syringe needle is blown through the blowing assembly, the blown gas passes through the air inlet hole in the mounting hole and blows one end of the balance sheet, and the other end of the balance sheet is sensed to swing through the sensing head, so that whether the syringe needle is blocked or not is obtained, and the device has the advantages of accurate blockage detection and high blockage detection efficiency;

2. the balance sheet is slightly smaller than the mounting groove and can swing in the mounting groove, and the balance sheet is placed and positioned in the mounting groove, so that the balance device has the advantages of simple structure and convenience in disassembly and assembly, and is convenient to maintain;

3. the lifting cylinder II drives the lower air blowing rod to rise so that an air outlet of the lower air blowing rod is communicated with a corresponding air inlet rod on the tool strip, the syringe needle is aligned, and the device has the advantages of simple structure and convenience in air blowing;

4. blow the lower extreme of syringe needle through the subassembly of blowing, whether swing back through the other end of inductive head response balance piece, blow the one end of balance piece through last blowing rod and be convenient for balance piece reset to examine stifled to next syringe, have the advantage of reliable operation.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the blockage detecting mechanism for the needle tube.

Fig. 2 is a schematic cross-sectional view of a first embodiment of the blockage detecting mechanism for the needle tube.

Fig. 3 is an internal exploded view of the mounting seat of the needle tube blockage detection mechanism.

Fig. 4 is a schematic perspective view of a second embodiment of the blockage detecting mechanism for the needle tube.

FIG. 5 is a schematic cross-sectional view of the syringe and tool strip.

In the figure, 1, a workbench; 2. an injector; 2a, a needle seat; 2b, a needle tube; 3. assembling a strip; 3a, an air inlet rod; 4. a support; 5. a positioning mechanism; 5a, positioning a first block; 5b, a second positioning block; 5c, blocking edges; 5d, a translation seat; 5e, translating the first air cylinder; 5f, clamping a first plate; 5f1 and a first card slot; 5g, clamping a second plate; 5g1 and a second clamping groove; 5h, blocking the plate; 5i, a second translation seat; 5j, a translation cylinder II; 5k, a roller; 5m, a push block; 6. a blowing assembly; 6a, a lower mounting seat; 6b, a second lifting cylinder; 6c, a lower blowing rod; 6c1, air inlet; 6c2, air outlet; 7. a lifting plate; 8. a lifting mechanism; 9. a mounting seat; 9a, mounting grooves; 9b, positioning grooves; 9c, air inlet holes; 10. a balance sheet; 10a, a sheet body; 10b, convex bodies; 11. an inductive head; 12. a cover plate; 12a and a blowing hole.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.