CN113043218A

CN113043218A - Method for assembling infusion hose and straight tee joint

Info

Publication number: CN113043218A
Application number: CN202110247939.8A
Authority: CN
Inventors: 黄增; 苏茜; 王晨雪; 廖剑斌; 李彬文; 邓桂丹; 兰如梦
Original assignee: Guangxi Technological College of Machinery and Electricity
Current assignee: Guangxi Technological College of Machinery and Electricity
Priority date: 2021-03-06
Filing date: 2021-03-06
Publication date: 2021-06-29

Abstract

The invention discloses an assembling method of an infusion hose and a straight tee joint, which comprises the following steps: 1) the straight three-way joint is clamped by the joint clamp; 2) the single-tube front-end pipe reducing mechanism is used for reducing the rear end of the single infusion hose in the X-axis direction; the single-tube pre-installing feeding mechanism pre-inserts the end part of the single contracted infusion hose into an inner hole of the single-hole end of the straight three-way joint; the single-tube secondary insertion mechanism inserts the single pre-inserted infusion hose into the bottom of the inner hole at the single-hole end of the straight three-way joint; 3) the double-pipe front-end pipe contracting mechanism contracts the front ends of the two transfusion hoses in the X-axis direction; the double-tube preassembly feeding mechanism is used for preassembling the end parts of two contracted infusion hoses into two inner holes of the double-hole end of the straight three-way joint; the double-tube secondary insertion mechanism inserts two pre-inserted infusion hoses into the bottoms of two inner holes at the two hole ends of the straight three-way joint respectively. The front end of the infusion hose is contracted by the pipe contracting mechanism and then inserted, so that the assembly efficiency is high, the assembly quality is good, and the infusion hose is suitable for large-scale production.

Description

Method for assembling infusion hose and straight tee joint

[ technical field ]

The invention relates to a medical apparatus, in particular to an assembling method of an infusion hose and a straight three-way joint.

[ background art ]

The medical PVC straight tee joint can be used for a disposable plastic blood bag and has the functions of connection and switching. Before the medical PVC straight tee joint is used, an infusion hose needs to be inserted into an inner hole of the straight tee joint for assembly and bonding. One end of the straight three-way joint is a single hole, the other end of the straight three-way joint is a double hole which is arranged in parallel, the size matching of the infusion hose and the inner hole of the straight three-way joint is transition matching, the infusion hose is soft, the end part is difficult to keep enough roundness, and the infusion hose is difficult to insert into the inner hole of the straight three-way joint. The straight tee is connected with the double-hole end arranged in parallel and needs to be inserted into two parallel infusion hoses, and the assembly difficulty is higher than the insertion difficulty of the single-hole end and the single infusion hose. Because the assembly difficulty is high, the mechanical assembly is difficult to realize, the traditional assembly method of the straight three-way joint and the infusion hose is manual assembly and bonding, the labor intensity is high, the assembly efficiency is low, the assembly quality is poor, and the assembly method is not suitable for large-scale production.

[ summary of the invention ]

The invention aims to provide an assembly method of a transfusion hose and a straight three-way joint, which has high assembly efficiency.

In order to solve the technical problem, the invention adopts the technical scheme that the assembling method of the infusion hose and the straight three-way joint comprises the following steps:

101) the straight three-way joint is clamped by the joint clamp, an inner hole of a single-hole end of the straight three-way joint faces the positive direction of the X axis, and two inner holes of double-hole ends of the straight three-way joint face the negative direction of the X axis;

102) the single-transfusion hose conveying device supplies a single transfusion hose to the single-transfusion hose inserting device, and a single-pipe front-end pipe reducing mechanism of the single-transfusion hose inserting device reduces the rear end of the single transfusion hose along the X-axis direction; the single-tube pre-installing feeding mechanism of the single infusion hose inserting device pre-inserts the end part of the single infusion hose with the contracted tube into an inner hole at the single-hole end of the straight three-way joint; a single-tube secondary insertion mechanism of the single-infusion hose insertion device inserts a single pre-inserted infusion hose into the bottom of an inner hole at a single-hole end of the straight three-way joint;

103) the double-liquid-hose conveying device supplies two parallel infusion hoses to the double-liquid-hose inserting device, and a double-pipe front-end pipe contracting mechanism of the double-liquid-hose inserting device contracts the front ends of the two infusion hoses along the X-axis direction; the double-tube pre-assembling feeding mechanism of the double-fluid hose inserting device pre-inserts the end parts of two contracted fluid hoses into two inner holes at the double-hole end of the straight three-way joint; the double-tube secondary inserting mechanism of the double-fluid hose inserting device inserts two pre-inserted fluid hoses into the bottoms of two inner holes at the double-hole ends of the straight three-way joint respectively.

The front end of the infusion hose is contracted by the pipe contracting mechanism and then inserted, so that the assembly efficiency is high, the assembly quality is good, and the infusion hose is suitable for large-scale production.

[ description of the drawings ]

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a perspective view of an apparatus for assembling an infusion hose and a tee fitting according to an embodiment of the present invention.

FIG. 2 is a top view of an apparatus for assembling an infusion hose and a tee fitting according to an embodiment of the present invention.

Fig. 3 is a perspective view of a single infusion hose and fitting assembly device in accordance with an embodiment of the present invention.

Fig. 4 is a front view of a single infusion hose and fitting assembly of an embodiment of the invention.

FIG. 5 is a top view of a single infusion hose and fitting assembly of an embodiment of the invention.

Fig. 6 is a left side view of a single infusion hose and fitting assembly of an embodiment of the invention.

Fig. 7 is a front view of a single infusion hose delivery device in accordance with an embodiment of the invention.

Fig. 8 is a top view of a single infusion hose delivery device in accordance with an embodiment of the invention.

Fig. 9 is a rear view of a single infusion hose delivery device in accordance with an embodiment of the invention.

Fig. 10 is a perspective view of a second pneumatic collet of a single infusion hose delivery device in accordance with an embodiment of the present invention.

Fig. 11 is a perspective view of another perspective view of a second pneumatic clamp of the single infusion hose delivery device in accordance with the embodiment of the present invention.

Fig. 12 is a perspective view of the second pneumatic collet upper collet of the single infusion hose delivery device of the embodiment of the present invention.

Fig. 13 is a perspective view of a second pneumatic collet lower collet of the single infusion hose delivery device of the embodiment of the present invention.

FIG. 14 is a front view of a single infusion hose cartridge device in accordance with an embodiment of the invention.

FIG. 15 is a top view of a single infusion hose cartridge device in accordance with an embodiment of the invention.

FIG. 16 is a perspective view of a single infusion hose cartridge device in accordance with an embodiment of the present invention.

FIG. 17 is a perspective view of the power portion of the single infusion hose cartridge device in accordance with the embodiment of the present invention.

FIG. 18 is a perspective view of a dual fluid hose and fitting assembly according to an embodiment of the present invention.

FIG. 19 is a front view of a dual fluid hose and fitting assembly according to an embodiment of the present invention.

FIG. 20 is a top view of a dual fluid hose and fitting assembly according to an embodiment of the present invention.

Fig. 21 is a front view of a dual fluid hose delivery assembly according to an embodiment of the present invention.

Fig. 22 is a perspective view of a dual fluid hose delivery assembly according to an embodiment of the present invention.

Fig. 23 is a perspective view of a fourth pneumatic collet of the dual fluid hose delivery device of an embodiment of the present invention.

Fig. 24 is a perspective view of a fourth pneumatic collet of the dual fluid hose delivery device in accordance with the present invention from another perspective.

Fig. 25 is a perspective view of an upper clamp of a fourth pneumatic clamp of the dual fluid hose delivery device in accordance with the present invention.

Fig. 26 is a perspective view of the lower clamp of the fourth pneumatic clamp of the dual fluid hose delivery device in accordance with the embodiment of the present invention.

FIG. 27 is a front view of a dual fluid hose cartridge according to an embodiment of the present invention.

FIG. 28 is a rear view of a dual fluid hose cartridge according to an embodiment of the present invention.

FIG. 29 is a perspective view of a dual fluid hose cartridge according to an embodiment of the present invention.

FIG. 30 is a left side view of a dual fluid hose cartridge according to an embodiment of the present invention.

Fig. 31 is a partial configuration view in plan view of a dual fluid hose inserting apparatus according to an embodiment of the present invention.

FIG. 32 is a block diagram of a dual tube pinch clamp in accordance with an embodiment of the present invention.

Fig. 33 is an exploded view of a dual tube twist clamp in accordance with an embodiment of the present invention.

FIG. 34 is a perspective view of an assembled product removal mechanism and clamp according to an embodiment of the present invention.

FIG. 35 is a front view of an assembled product removal mechanism and clamp, in accordance with an embodiment of the present invention.

FIG. 36 is a top view of an assembled product removal mechanism and clamp according to an embodiment of the present invention.

Figure 37 is a perspective view of the upper portion of a clamp seat according to an embodiment of the present invention.

FIG. 38 is a perspective view of a clamp press block according to an embodiment of the present invention.

[ detailed description of the invention ]

The structure of the assembling device of the infusion hose and the straight tee joint of the embodiment of the invention is shown in fig. 1 to 38, and comprises a frame 100, a vibration disc 94, a joint clamp 70, a single infusion hose and joint assembling device 200, a double infusion hose and joint assembling device 300 and an assembled product taking-out mechanism 80. The vibration plate 94, the joint jig 70, the single infusion hose and joint assembling apparatus 200, the double infusion hose and joint assembling apparatus 300, and the take-out mechanism 80 of the assembled product are mounted on the table 101 of the frame 100.

The straight three-way joints 01 are sequenced and conveyed by the vibration disc 94, conveyed to the joint clamps 70 arranged at the middle parts of the machine frame bedplate along the vibration disc feeding track 95, the straight three-way joints 01 clamped by the joint clamps 70 are arranged along the X-axis direction, the single-hole ends of the straight three-way joints 01 face the positive direction of the X-axis, and the double-hole ends face the negative direction of the X-axis. The dual fluid hose and joint assembly device 300 is disposed at one side of the joint fixture 70 in the negative X-axis direction, and the single fluid hose and joint assembly device 200 is disposed at one side of the joint fixture 70 in the positive X-axis direction.

The single infusion hose and connector assembly 200 is used for assembling a single infusion hose 02 and a single-hole end of a straight tee joint 01, and is structured as shown in fig. 3 to 17, and comprises a hose discharging reel 96, a single infusion hose conveying device 20, a single infusion hose inserting device 30 and a set of dispensing devices 60.

The structure of the single infusion hose conveying device 20 is shown in fig. 6 to 13, and comprises a linear module 21, a linear module 22, a bedplate 23, a bracket 24, a bracket 25, a three-rod cylinder 261, a pneumatic shear 26, a pneumatic chuck 27, a pneumatic chuck 28 and an infusion hose tensioning mechanism 29 which are sequentially arranged in the positive direction of the X axis.

The linear module 21 is arranged on the rack bedplate 101 along the X-axis direction, the linear module 21 comprises a motor 211, a first lead screw nut pair and a support 212 with a first linear guide rail pair, the support 212 is arranged on the rack bedplate 101 along the X-axis direction, the motor 211 and the first lead screw nut pair are arranged on the support 212, a lead screw 213 of the first lead screw nut pair is driven by the motor 211, a slide block 214 of the first linear guide rail pair is a slide block of the linear module 21, and a nut of the first lead screw nut pair is fixed on the slide block 214 of the first linear guide rail pair.

Platen 23 is fixed to slide 214 of the first linear guide pair. The linear module 22 is arranged on a platen 23 in the Y-axis direction, and a carriage 24 is fixed to a slider of the linear module 22. The three-rod cylinder 261 is fixed on the bracket 24 along the Y-axis direction, and the pneumatic scissors 26 are fixed on the piston rod of the three-rod cylinder 261. Pneumatic chuck 27 is mounted on carriage 24 and pneumatic chuck 28 is mounted on platen 23.

The linear module 22 comprises a single-rod cylinder 221 arranged along the Y-axis direction and a second linear guide rail pair arranged along the Y-axis direction, a guide rail 222 of the second linear guide rail pair is fixed on the top surface of the bedplate 23, a cylinder body of the single-rod cylinder 221 is fixed on the bedplate 23, and a piston rod of the single-rod cylinder 221 is connected with the bracket 24. The slide 223 of the second linear guide pair serves as a slide of the linear module 22. The support 24 is L-shaped and comprises a transverse plate 241 and an upright plate 242, the transverse plate 241 of the support 24 is fixed on a slide block 223 of the second linear guide rail pair, a finger cylinder 271 for driving the pneumatic chuck 27 is installed on the transverse plate of the support 24, and a three-rod cylinder 261 is fixed on the upright plate of the support 24. A finger cylinder 281 driving a pneumatic chuck 28 is mounted on the bracket 25, and the bracket 25 is fixed on the platen 23.

The infusion hose tensioning mechanism 29 includes a pneumatic collet 291, a guide bracket 292, and a thrust roller 293. The pneumatic chuck 291 is disposed forward of the pneumatic chuck 28 in the positive X-axis direction. The guide support 292 comprises a vertical plate 2921, two first guide rods 2922 and two pressure springs 2923, the first guide rods 2922 are arranged along the X-axis direction, two guide rod holes are formed in the lower portion of the vertical plate 2921, the rear end of each first guide rod 2922 along the X-axis positive direction penetrates through the guide rod hole of the vertical plate 2921 and is fixed on the platen 23, and the first guide rods 2922 are in sliding fit with the guide rod holes of the vertical plate 2921. The pressure spring 2923 is sleeved on the first guide rod 2922, one end of the pressure spring 2923 abuts against the head of the front end of the first guide rod 2922, the other end of the pressure spring 2923 abuts against the lower part of the vertical plate 2921, and the vertical plate 2921 is closed to the direction of the pneumatic chuck 28 by the thrust of the pressure spring 2923. The finger cylinder 2924 for driving the pneumatic chuck 291 is mounted on the vertical plate 2921, and the middle of the vertical plate 2921 near the pneumatic chuck 28 is provided with an inclined boss 2925 which is matched with the roller 2934.

The thrust roller 293 includes a U-shaped bracket 2931, a roller guide 2932, a pressure spring 2933, and a roller 2934, and the roller 2934 is rotatably mounted on the lower end of the roller guide 2932. The U-shaped bracket 2931 comprises a bottom plate and two wings arranged up and down, and the bottom plate of the U-shaped bracket 2931 is fixed on the upper chuck 28A of the pneumatic chuck 28 and is positioned between the pneumatic chuck 28 and the pneumatic chuck 291. The two wings of the U-shaped bracket 2931 each have a guide rod hole, and the roller guide 2932 passes through the guide rod holes of the two wings of the U-shaped bracket 2931 and is in sliding fit with the guide rod holes of the two wings. The compression spring 2933 is sleeved on the roller guide rod 2932, the upper end of the compression spring abuts against the upper wing plate of the U-shaped support 2931, and the lower end of the compression spring abuts against the flange of the roller guide rod 2932. The roller 2934 rests on the ramp boss 2925.

As shown in fig. 10 and 11, the pneumatic chuck 28 includes a V-shaped clamp 288 and a flat clamp 289, the V-shaped clamp 288 being distal from the pneumatic chuck 27, and the flat clamp 289 being proximal to the pneumatic chuck 27. The upper clamp 282 of the pneumatic clamp 28 has two vertically arranged clamps 2821, the lower clamp 283 of the pneumatic clamp 28 has two vertically arranged clamps 2831 and one vertically arranged clamp 2832, a gap larger than the thickness of the clamp 2831 along the X-axis direction is arranged between the two clamps 2821, and gaps larger than the thickness of the clamp 2821 along the X-axis direction are respectively arranged between the two clamps 2831 and between the clamp 2831 and the clamp 2832. Jaws 2821 of the upper chuck are offset from jaws 2831 of the lower chuck in the X-axis direction. The clamping piece 2821 of the upper clamping head and the two clamping pieces 2831 of the lower clamping head of the pneumatic clamping head 28, which are far away from the pneumatic clamping head 27, are respectively provided with a protruding part 284, a V-shaped groove 285 is arranged in the protruding part 284, and the bottom of the V-shaped groove 285 is provided with an arc surface 286. When the pneumatic collet 28 is clamped, the protrusions of the jaws 2821 of the upper collet 282 are inserted into the gaps between the jaws of the lower collet 283, the protrusions of the jaws 2831 of the lower collet 283 are inserted into the gaps between the jaws of the upper collet 282, and a V-shaped clamping opening 288 is formed between the upper collet 282 and the lower collet 283. When the pneumatic chuck 28 is clamped, the flat clip 2832 of the lower chuck 283 of the pneumatic chuck 28 close to the pneumatic chuck 27 and the non-protruding part 2822 of the clip 2821 of the upper chuck 282 of the pneumatic chuck 28 close to the pneumatic chuck 27 form a flat clip opening 289.

As shown in fig. 14 to 17, the single infusion hose inserting apparatus 30 includes a platen 31, a second linear guide pair, a base 32, a single-tube front end pipe contracting mechanism 33, a single-tube pre-loading feeding mechanism 34, a single-tube secondary inserting mechanism 35, a motor 39, a second linear guide pair, a fourth linear guide pair, and a single-rod cylinder 37.

The single-tube pre-load feeding mechanism 34 and the single-tube secondary inserting mechanism 35 are driven by a motor 39. The guide rail 381 of the second linear guide rail pair is disposed on the platen 31 in the X-axis direction, and the base 32 is fixed to the slider 382 of the second linear guide rail pair. The fourth linear guide rail pair and the single-rod cylinder 37 are arranged along the X-axis direction, a guide rail 361 of the fourth linear guide rail pair is fixed on the rack platen 101, and the platen 31 is fixed on a slide block 362 of the fourth linear guide rail pair. The single-rod cylinder 37 is fixed on the frame platen 101, and the piston rod of the single-rod cylinder 37 is connected with the platen 31.

The single-tube front-end tube reducing mechanism 33, the single-tube preassembly feeding mechanism 34 and the single-tube secondary inserting mechanism 35 are installed on the base 32, and the single-tube front-end tube reducing mechanism 33 is arranged behind the single-tube secondary inserting mechanism 35 along the X axis. The joint jig 70 is disposed behind the single-tube front-end pipe contracting mechanism 33 in the X-axis direction.

The single-tube front-end pipe reducing mechanism 33 comprises a pipe reducing clamp 33A, a vertical plate 331 and a third linear module 332. The third linear module 332 comprises a single-rod cylinder 3321 and a third linear guide rail pair, the single-rod cylinder 3321 and a guide rail 3322 of the third linear guide rail pair are fixed on the machine base 32 along the Y-axis direction, and a vertical plate 331 of the single-tube front-end pipe reducing mechanism 33 is fixed on a sliding block 3323 of the third linear guide rail pair and connected with a piston rod of the single-rod cylinder 3321. The pipe clamp 33A includes an upper clamp 333, a lower clamp 334 and a pipe clamp driving mechanism, the clamp head of the lower clamp 334 of the pipe clamp 33A has a U-shaped groove 335 opened upward, the clamp head of the upper clamp 333 of the pipe clamp 33A has a V-shaped protrusion 336 protruded downward, and the lower end of the V-shaped protrusion 336 is inserted into the upper portion of the U-shaped groove 335 when the upper clamp 333 and the lower clamp 334 of the pipe clamp 33A are engaged. The top of the U-shaped groove 335 of the lower clamp 334 of the pinch clamp 33A is provided with a V-shaped opening, and the width of the U-shaped groove 335 is smaller than the diameter of the infusion hose. The pipe contracting clamp driving mechanism comprises an upper finger cylinder 338 and a lower finger cylinder 339, wherein the upper finger cylinder 338 and the lower finger cylinder 339 are vertically arranged along the Y-axis direction and are fixed on a vertical plate 331 of the single-pipe front end pipe contracting mechanism 33. The upper clamp 333 of the pinch clamp 33A is fixed to the lower finger of the upper finger cylinder 338, and the lower clamp 334 of the pinch clamp 33A is fixed to the upper finger of the lower finger cylinder 339. An adjusting screw 337 for adjusting the fastening distance between the upper clamp 333 and the lower clamp 334 of the hose clamp 33A is provided.

The single-tube pre-assembly feeding mechanism 34 comprises a driving bevel gear 341, a bevel gear shaft 342, a rack 343 and a support 344, wherein the driving bevel gear 341 is arranged along the X-axis direction, the hub of the driving bevel gear 341 is fixed on the main shaft of the motor 39, and the motor 39 is fixed on the vertical plate 321 of the base 32. The bevel gear shaft 342 is arranged in the Y-axis direction, the middle of the bevel gear shaft 342 is supported by the bearing block 322 on the base 32, the driven bevel gear 3421 at the front end of the bevel gear shaft 342 meshes with the drive bevel gear 341, and the gear shaft 3422 at the rear end meshes with the rack 343. The rack 343 is fixed to the top of the support 344 in the X-axis direction, and the lower end of the support 344 is fixed to the platen 31.

The single-tube secondary insertion mechanism 35 comprises a middle-general-type three-jaw cylinder 351, a driving cylindrical gear 352 and a driven cylindrical gear 353, wherein the driving cylindrical gear 352 is installed on a hub of the driving bevel gear 341 and is meshed with the driven cylindrical gear 353. The middle-general-type three-jaw cylinder 351 is arranged behind the driven cylindrical gear 353 along the X-axis direction, is fixed on the driven cylindrical gear 353 and is coaxial with the driven cylindrical gear 353. The rubber clamping jaw of the middle-general-type three-jaw cylinder 351 faces the single-tube front end pipe contracting mechanism 33, and the hub of the driven cylindrical gear 353 is supported by a bearing seat 323 on the base 32. The axis of the center-pass three-jaw cylinder 351 passes through the workpiece holding hole of the joint jig 70.

As shown in fig. 4 and 6, the glue dispensing device 60 includes a glue dispensing gun 61, a three-rod cylinder 62, a three-rod cylinder mounting plate 63, and a Z-shaped connecting plate 64, wherein the glue dispensing gun 61 is fixed on an upper end of the Z-shaped connecting plate 64, a lower end of the Z-shaped connecting plate 64 is fixed on an upper end of a piston rod of the three-rod cylinder 62, the three-rod cylinder 62 is fixed on the three-rod cylinder mounting plate 63, and the three-rod cylinder mounting plate 63 is fixed on the rack platen 101. The glue dispensing gun 61 forms an angle of 30 degrees with the horizontal plane. The tip of the glue gun 61 is positioned between the joint clamp 70 and the single infusion hose cartridge 30, near the joint clamp 70.

The dual-fluid hose and joint assembly device 300 is used for assembling two parallel fluid hoses and two ends of a straight tee joint 01, and is structurally shown in fig. 18 to 33, and comprises two hose discharging rollers 96, a dual-fluid hose conveying device 40, a dual-fluid hose inserting device 50 and two sets of glue dispensing devices 60.

The double-infusion hose conveying device 40 comprises a linear module 41, a bedplate 42, a three-rod cylinder 43, a pneumatic chuck 44, a pneumatic shear 45, a bracket 46 and a double-infusion hose tensioning mechanism which are sequentially arranged along the positive direction of the X axis.

The linear module 41 comprises a motor 411, a second screw-nut pair and a support 412 with a fifth linear guide rail pair, the support 412 is fixed on the rack platen 101, the motor 411 and the second screw-nut pair are installed on the support 412, a screw 413 of the second screw-nut pair is driven by the motor 411, a nut of the second screw-nut pair is fixed on a slide block 414 of the fifth linear guide rail pair, and the platen 42 is fixed on the slide block 414 of the fifth linear guide rail pair.

The three-rod cylinder 43 is fixed on the bedplate 42 and arranged along the Y-axis direction, and the motor end of the pneumatic shear 45 is fixed on the piston rod of the three-rod cylinder 43.

A finger cylinder 441 for driving the pneumatic chuck 44 is mounted on a bracket 46 in the Y-axis direction, and the bracket 46 is fixed to the platen 42.

The pneumatic chuck 44 (fourth pneumatic chuck) includes a double V-shaped clamp 448 and a flat clamp 449, the double V-shaped clamp 448 being away from the pneumatic shears 45, and the flat clamp 449 being close to the pneumatic shears 45.

The upper clamp 442 of the pneumatic clamp 44 has two vertically arranged clamp pieces 4421, the lower clamp 443 of the pneumatic clamp 44 has two vertically arranged clamp pieces 4431 and one vertically arranged clamp piece 4432, a gap larger than the thickness of the clamp piece 4431 is formed between the two clamp pieces 4421 in the X-axis direction, and a gap larger than the thickness of the clamp piece 4421 is formed between the two clamp pieces 4431 and between the

clamp pieces

4431 and 4432 in the X-axis direction. The jaws 4421 of the upper chuck are offset from the jaws 4431 of the lower chuck in the X-axis direction. The jaws 4421 of the upper jaw 442 and the lower jaw 443 of the pneumatic jaw 44, which are remote from the jaws 4431 of the pneumatic shear 45, each have a projection 444. The protrusion 444 has a V-shaped groove 445 therein, and the lower chuck 443 of the pneumatic chuck 44 has a vertically disposed partition 446 in the V-shaped groove 445, the partition 446 partitioning the V-shaped groove 445 into double V-shaped grooves. The bottoms of the two V-shaped grooves of the double V-shaped grooves respectively comprise cambered surfaces, and the inclined surfaces of the V-shaped grooves are connected with the cambered surfaces. The bottom of the V-shaped recess 445 in the protrusion 444 of the cartridge 442 on the pneumatic cartridge 44 is flat-bottomed. The flat bottom of the V-shaped groove 445 of the upper chuck 442 is connected with two inclined surfaces of the V-shaped groove through arc surfaces respectively.

When the pneumatic chuck 44 is clamped, the protrusions of the clamping pieces 4421 of the upper chuck 442 are inserted into the gaps between the clamping pieces of the lower chuck 443, and the protrusions of the clamping pieces 4431 of the lower chuck 443 are inserted into the gaps between the clamping pieces of the upper chuck 442, thereby forming double V-shaped clamping openings 448.

When the pneumatic collet 44 is clamped, the clamping piece 4431 of the lower collet 443 of the pneumatic collet 44 and the non-protruding portion 4422 of the upper collet 442 form a flat clamping opening 449.

The double fluid hose tensioning mechanism of the double fluid hose feeding device 40 includes a pneumatic clamp 47, a guide bracket 48, and a thrust roller 49, and the pneumatic clamp 47 is disposed rearward of the pneumatic clamp 44 in the X-axis direction. The thrust roller 49 is mounted on the upper jaw 442 of the pneumatic jaw 44 between the pneumatic jaw 44 and the pneumatic jaw 47. The guide bracket 48 comprises a vertical plate 481, two guide rods 482 and two pressure springs 483, wherein the guide rods 482 are arranged along the X-axis direction, two guide rod holes are formed in the lower part of the vertical plate 481, and the front ends of the guide rods 482 along the X-axis positive direction penetrate through the guide rod holes of the vertical plate 481 to be fixed with the bedplate 42 and are in sliding fit with the guide rod holes of the vertical plate 481. The pressure spring 483 is sleeved on the guide rod 482, one end of the pressure spring 483 abuts against the head at the rear end of the guide rod 482, the other end of the pressure spring 483 abuts against the lower part of the vertical plate 481, and the vertical plate 481 is closed towards the direction of the pneumatic chuck 44 by the thrust of the pressure spring 483. The finger cylinder 471 for driving the pneumatic chuck 47 is fixed on the vertical plate 481, and the middle part of the vertical plate 481 close to one side of the pneumatic chuck 44 is provided with an inclined boss 4811 matched with the thrust roller 49.

The thrust roller 49 includes a U-shaped bracket 491, a roller guide rod 492, a pressure spring 493, and a roller 494, and the roller 494 is rotatably mounted on a lower end of the roller guide rod 492. The U-shaped support 491 comprises a bottom plate and two wing plates which are arranged up and down, the bottom plate of the U-shaped support 491 is fixed on one side of the four pneumatic chucks, the chucks are close to the finger cylinder 471, the upper wing plate and the lower wing plate respectively comprise guide rod holes, and the roller guide rod 492 passes through the guide rod holes of the two wing plates and is in sliding fit with the guide rod holes of the two wing plates. The compression spring 493 is sleeved on the roller guide rod 492, the upper end of the compression spring is abutted against the upper wing plate of the U-shaped bracket 491, and the lower end of the compression spring is abutted against the flange of the roller guide rod 492. Roller 494 rests on ramp boss 4811.

The double infusion hose inserting device 50 comprises a bedplate 51, a linear guide rail pair 56, a base 52, a double-pipe front end pipe contracting mechanism 53, a double-pipe preassembly feeding mechanism 54, a double-pipe secondary inserting mechanism 55, a linear guide rail pair 58, a single-rod cylinder 59 and a motor 57, wherein the double-pipe preassembly feeding mechanism 54 and the double-pipe secondary inserting mechanism 55 are driven by the motor 57. The platen 51 is mounted on the frame platen 101, the guide 561 of the linear guide pair 56 is disposed on the top surface of the platen 51 in the X-axis direction, and the bottom plate 523 of the frame 52 is fixed to the slider 562 of the linear guide pair 56.

The double-tube front end tube reducing mechanism 53, the double-tube preassembly feeding mechanism 54 and the double-tube secondary inserting mechanism 55 are installed on the base 52, the double-tube front end tube reducing mechanism 53 is arranged in front of the double-tube secondary inserting mechanism 55 along the X axis, and the joint clamp 70 is arranged in front of the double-tube front end tube reducing mechanism 53. The linear guide pair 58 and the single rod cylinder 59 are arranged in the X-axis direction, the guide 581 of the linear guide pair 58 is fixed to the frame platen 101, and the platen 51 is fixed to the slider of the linear guide pair 58. The single-rod cylinder 59 is fixed on the frame bedplate 101, and a piston rod of the single-rod cylinder 59 is connected with the bedplate 51.

The double-tube front-end tube reducing mechanism 53 comprises a double-tube reducing tube clamp 53A, a vertical plate 531 and a fifth linear module 532.

The fifth linear module 532 includes a single rod cylinder 5321 and a seventh linear guide rail pair, the single rod cylinder 5321 is fixed on the bottom plate 523 of the base 52 along the Y-axis direction through a bracket 5325, and the guide rail 5322 of the seventh linear guide rail pair is fixed on the bottom plate 523 of the base 52 along the Y-axis direction and is parallel to the single rod cylinder 5321. The vertical plate 531 of the double-tube front end shrinking mechanism 53 is fixed on the first slide block 5323 of the seventh linear guide rail pair and is connected with the piston rod of the single-rod cylinder 5321 through the connecting plate 5324.

The double-tube pinch clamp 53A is mounted on the riser 531. The double tube pinch clamp 53A includes an upper clamp 533, a lower clamp 534, and a double tube pinch clamp driving mechanism, the double tube pinch clamp 53A has a clamp head of the lower clamp 534 having two U-shaped grooves 535 opened upward, the clamp head of the upper clamp 533 having two V-shaped protrusions 536 protruded downward, and when the upper clamp 533 and the lower clamp 534 of the double tube pinch clamp 53A are engaged, the lower ends of the V-shaped protrusions 536 are inserted into the upper portions of the corresponding U-shaped grooves 535. The U-shaped grooves 535 of the lower clamp 534 of the double-tube pinch clamp 53A are opened at the top in a V shape, and the width of each U-shaped groove 535 is smaller than the diameter of the infusion hose.

The double-pipe reducing clamp driving mechanism comprises two finger cylinders 538 and two finger cylinders 539 which are separately arranged up and down, wherein the upper finger cylinder 538 and the lower finger cylinder 539 of the double-pipe reducing clamp driving mechanism are vertically arranged along the Y-axis direction and fixed on the vertical plate 531. The upper clamp 533 of the double-tube pinch clamp 53A is fixed to the lower finger of the upper finger cylinder 538, and the lower clamp 534 of the double-tube pinch clamp 53A is fixed to the upper finger of the lower finger cylinder 539.

The double-tube pre-installation feeding mechanism 54 comprises a driving bevel gear 541, a bevel gear shaft 542, a rack 543 and a support 544, wherein the driving bevel gear 541 is arranged along the X-axis direction, a hub of the driving bevel gear 541 is fixed on a shaft of the motor 57, and the motor 57 is fixed on a vertical plate 521 of the base 52. The bevel gear shaft 542 is arranged in the Y-axis direction, the middle portion thereof is supported by the bearing block 522 on the base 52, the driven bevel gear 5421 at the front end of the bevel gear shaft 542 is engaged with the drive bevel gear 541, and the gear shaft 5422 at the rear end is engaged with the rack 543. The rack 543 is fixed to the top of the support 544 in the X-axis direction, and the support 544 is fixed to the platen 51.

The double tube secondary inserting mechanism 55 includes a three-rod cylinder 551, a gear shaft 552, a double tube hose clamp 55A, a rack 553, and a rack bracket 554. The gear shaft 552 is fixed to the front end of the drive bevel gear 541 in the X-axis direction, coaxially with the drive bevel gear 541. The rack 553 is fixed to the top of the rack support 554 in the Y-axis direction, and the bottom of the rack support 554 is fixed to the second block of the seventh linear guide pair (the second block of the seventh linear guide pair is not shown). A cylindrical gear at the front end of the gear shaft 552 is engaged with the rack 553. The upper jaw 555 of the double tube hose clamp 55A is fixed to the rack 553.

The lower clamp 556 of the double tube hose clamp 55A is fixed on the top of the piston rod of the three-rod cylinder 551, and the three-rod cylinder 551 is vertically fixed on the base 52. The rubber upper washboard 5551 is arranged on the bottom surface of the upper chuck 555 of the double-pipe washboard clamp 55A, the lower chuck 556 of the double-pipe washboard clamp 55A comprises a U-shaped support 5541, a rubber lower washboard 5562 and a strip-shaped sliding block 5563, a slideway is arranged at the bottom of a groove of the U-shaped support 5561, the groove and the slideway of the U-shaped support 5561 are arranged along the Y-axis direction, and the strip-shaped sliding block 5563 is in sliding fit with the slideway. The rubber lower washboard 5562 is arranged in the groove of the U-shaped bracket 5561 and fixed on the top of the strip-shaped sliding block 5563. The tops of the two vertical plates of the U-shaped support 5561 are respectively provided with two arc-shaped grooves 5564 which are separately arranged along the Y-axis direction, and the top surface of the rubber lower washboard 5562 is higher than the bottoms of the arc-shaped grooves 5564.

The tips of the two dispensing guns 61 of the two dispensing devices 60 are positioned between the joint clamp 70 and the double-liquid-delivery-hose inserting device 50, are close to the joint clamp 70, and are respectively positioned above the two double-liquid-delivery hoses.

As shown in fig. 34 to 38, the joint jig 70 includes a placement seat 71 of a straight three-way joint, a three-rod cylinder 72, and a pressing block 73. The placement base 71 is fixed to the rack deck 101, the top of the placement base 71 includes a placement groove 711 of a straight three-way joint and a pallet 712 supporting the vibration plate rail 95, and the pallet 712 is disposed in front of the placement groove 711 in the Y-axis direction at a height lower than the placement groove 711. The middle of the bottom of the placement groove 711 is provided with a groove 713 communicated with the rear of the placement seat 71, two sides of the rear end of the placement groove 711 are respectively provided with a baffle 714 protruding upwards, and two ends of the placement groove 711 along the X-axis direction are respectively provided with a protruding edge 715 protruding upwards. The three-rod cylinder 72 is vertically fixed behind the placing seat 71, and the pressing block 73 is fixed on the top of the piston rod of the three-rod cylinder 72. The pressing piece 73 has two hook heads 731, and the heads of the hook heads 731 extend in the Y-axis direction. The bottom surface of the head of the first hook head 731A is a flat surface, and the bottom surface of the head of the second hook head 731B has an arc-shaped recess 732. The head of the first hook 731A is configured to compress the two-hole end of the straight three-way joint, and the head of the second hook 731B is configured to compress the single-hole end of the straight three-way joint.

As shown in fig. 34 to 38, the removing mechanism 80 of the straight three-way joint and infusion hose assembly product includes a straight line module, a pneumatic pick-up clamp, a three-rod cylinder 83 and a single-rod cylinder 84. The linear module comprises a single-rod cylinder 81 and a linear guide rail pair 85, and a guide rail 851 of the linear guide rail pair 85 and the single-rod cylinder 81 are respectively fixed on the rack bedplate 101 along the Y-axis direction. The piston rod of the single-rod cylinder 81 is connected to the slider 852 of the linear guide pair 85.

The pneumatic pickup clamp comprises two clamping heads 82 and a finger cylinder 86 which are arranged up and down, the rear ends of the two clamping heads 82 along the Y-axis direction are respectively fixed on the two upper and lower fingers of the finger cylinder 86, and the two clamping heads 82 of the pneumatic pickup clamp face to the upper part of the placing seat 71 and are positioned right behind the placing seat 71 along the Y-axis direction.

The finger cylinder 86 is fixed on top of the piston rod of the three-rod cylinder 83, and the three-rod cylinder 83 is vertically fixed on the slider 852 of the linear guide pair 85.

The two clamping heads 82 respectively comprise three clamping pieces 821, the width of the middle clamping piece 821A is smaller than the width of the two hook heads 731 of the pressing block 73 and the width of the groove 713 of the placing seat 71, and the distance between the two clamping pieces 821B on the two sides is larger than the width of the upper part of the pressing block 73 and the width of the upper part of the placing seat 71, so that the two clamping heads 82 of the pneumatic picking clamp are inserted into the placing seats 71 of the straight three-way joint. The middle clamping piece 821A of the clamping head 82 is used for clamping the straight three-way joint 01, and the clamping pieces 821B on the two sides of the clamping head 82 are respectively used for clamping infusion hoses inserted at the two ends of the straight three-way joint 01.

The single-rod cylinder 84 is fixed to the frame platen 101 in the Y-axis direction and positioned in front of the placement base 71, and the cylinder diameter of the single-rod cylinder 84 is larger than that of the single-rod cylinder 81 with the piston rod of the single-rod cylinder 84 facing the slider 852 of the linear guide pair 85.

The working process of the equipment for assembling the infusion hose and the straight three-way joint in the embodiment of the invention is as follows:

1) the straight three-way joint 01 enters the placing groove 711 at the top of the placing seat 71 from the vibrating disk feeding track 95 along the negative direction of the Y axis, and the single-hole end of the straight three-way joint 01 faces the positive direction of the X axis; the piston rod of the three-rod cylinder 72 contracts to drive the press block 73 to move downwards, the bottom surface of the first hook head 731A of the press block 73 presses the double-hole end of the straight three-way joint 01, and the second hook head 731B presses the single-hole end of the straight three-way joint 01, so that the straight three-way joint 01 is fixed in the clamp 70.

2) The single infusion hose inserting device inserts a single infusion hose into an inner hole at the single-hole end of the straight three-way joint 01 along the negative direction of the X axis; two infusion hoses are inserted into two inner holes at the two hole ends of the straight three-way joint 01 along the positive direction of the X axis by the double infusion hose inserting device, and the assembly of the infusion hoses and the straight three-way joint is completed.

3) The piston rod of the single-rod cylinder 84 extends out first, the single-rod cylinder 81 pushes the pneumatic pickup clamp to move along the positive direction of the Y axis, when the sliding block 852 of the linear guide rail pair 85 touches the piston rod of the single-rod cylinder 84, the thrust of the single-rod cylinder 84 is greater than the thrust of the single-rod cylinder 81, the piston rod of the single-rod cylinder 84 props against the sliding block 852 of the linear guide rail pair 85, the pneumatic pickup clamp stops moving, the front end of the pneumatic pickup clamp is just inserted into the clamp 70 at the moment, and the straight three-way joint 01 and the inserted infusion hose (not shown in the figure) in the clamp 70 are located between the upper chuck 82 and the lower chuck 82 of the pneumatic pickup clamp.

4) The finger cylinder 86 is closed, and the upper and lower clamping heads 82 of the pneumatic workpiece taking clamp the straight three-way joint 01 in the clamp 70 and the infusion hoses at two ends of the straight three-way joint 01; the piston rod of the three-rod cylinder 72 extends out first to drive the pressing block 73 to ascend; the piston rod of the three-rod cylinder 83 extends out to drive the pneumatic workpiece taking clamp for clamping the workpiece to ascend, and a new straight three-way joint 01 is supplemented into the placing groove 711 at the top of the placing seat 71 from the vibrating disk track 95 along the negative direction of the Y axis.

5) The piston rod of the single-rod cylinder 84 retracts, the single-rod cylinder 81 pushes the pneumatic workpiece taking clamp and the clamped workpiece to move along the positive direction of the Y axis again, and space for descending two hook heads of the pressing block 73 is reserved; the piston rod of the three-rod cylinder 72 contracts to drive the press block 73 to move downwards, and the press block 73 presses the newly supplemented straight three-way joint 01.

6) The single-rod cylinder 81 drives the pneumatic workpiece taking clamp and the clamped workpiece (product) to move along the Y-axis negative direction, and the assembled straight three-way joint 01 and the infusion hoses at the two ends are taken out of the clamp 70.

In the above step 2, the single infusion hose inserting process and the double infusion hose inserting process are respectively and simultaneously completed by the single infusion hose and joint assembling device 200 and the double infusion hose and joint assembling device 300.

The operation of the single infusion hose and fitting assembly 200 is as follows:

(1) the infusion tube 02, which is fed from the single tube supply reel 96 in the negative direction of the X-axis and has a diameter of 4.00mm, passes through two rollers of the tube support 91, the gap between the two rollers being slightly smaller than the outer diameter of the infusion tube 02. The two rolling columns can achieve a certain straightening effect, and meanwhile, the height of the infusion hose 02 in the vertical direction can be ensured, so that the clamping operation of various clamping jaws at the back is facilitated.

(2) After the product which is assembled in the previous period and is sheared by the infusion hoses 02 at two sides is taken out of the clamp 70, the pneumatic scissors 26 move along the negative direction of the Y axis under the action of the three-rod cylinder 261 to avoid a space; the linear module 21 drives the bedplate 23 to move along the negative direction of the X axis, and the pneumatic clamping head 27, the pneumatic clamping head 28 and the pneumatic clamping head 291 of the transfusion hose tensioning mechanism 29 on the bedplate 23 clamp the transfusion hose 02 together, and the front end of the transfusion hose is inserted into an inner hole channel of the driven cylindrical gear 353 of the single-tube secondary insertion mechanism 35.

(3) The pneumatic clamping head 27 is opened, and the transfusion hose 02 is loosened; the single-rod cylinder 221 drives the support 24 to move, and the pneumatic chuck 27 and the pneumatic shear 26 both move and avoid along the negative direction of the Y axis.

(4) The linear module 21 drives the bedplate 23 to move continuously along the negative direction of the X axis, the pneumatic chuck 28 on the bedplate 23 clamps the infusion hose 02 and the pneumatic chuck 291 of the infusion hose tensioning mechanism 29, the infusion hose 02 passes through the inner hole channel of the driven cylindrical gear 353 and the channel in the middle-type three-jaw cylinder 351, and the front end of the infusion hose 02 is inserted into the V-shaped opening of the expanded pinch clamp 33A.

(5) The finger of the lower finger cylinder 339 of the pinch clamp 33A is opened, the lower clamp 334 is lifted, and the infusion hose 02 falls on the opening of the U-shaped groove 335.

(6) The fingers of the upper finger cylinder 338 of the pinch clamp 33A are opened, the upper clamp 333 is lowered, the infusion hose 02 is pressed by the V-shaped protrusion 336, the upper part of the infusion hose 02 is squashed (sunken downwards) by the V-shaped protrusion 336, meanwhile, the infusion hose 02 is pressed to the bottom of the U-shaped groove 335 of the lower clamp, the width of the U-shaped groove 335 is 3.80mm, at the moment, the transverse width of the infusion hose 02 is reduced to 3.80mm, and the vertical height is also smaller than 3.80 mm.

(7) The pneumatic clamp 291 of the pneumatic clamp 28 and the infusion hose tensioning mechanism 29 are both opened to release the infusion hose 02.

(8) The driving bevel gear 341 of the motor 39 drives the bevel gear shaft 342 to rotate through the driven bevel gear 3421, and the gear shaft 3422 at the rear end of the bevel gear shaft 342 rolls on the rack 343 to drive the machine base 32 to move along the negative direction of the X-axis. A pinch clamp 33A attached to the front of the base 32 clamps the infusion tube 02, and the tip of the infusion tube 02 having a reduced diameter is inserted into the inner hole of the straight tee joint 01. The insertion depth is about 1mm, and the pre-insertion work of the infusion hose 02 is completed.

(9) The three-jaw cylinder 351 of the middle-way type is closed, and three rubber clamping jaws of the three-jaw cylinder 351 of the middle-way type clamp the infusion hose 02. Thereafter, the single infusion hose feeding device 20 is reset in the positive direction of the X-axis.

(10) The fingers of the upper finger cylinder 338 and the fingers of the lower finger cylinder 339 of the pinch clamp 33A are closed, and the pinch clamp 33A is opened to release the infusion hose 02. The third linear module 332 of the single-tube front end pipe reducing mechanism 33 operates, and the pipe reducing clamp 33A which is already opened by the single-tube front end pipe reducing mechanism 33 moves along the positive direction of the Y axis, so that a space is avoided for the secondary insertion work.

At the same time, the single infusion hose transfer device 20 after reset performs the following operations:

(11) firstly, the pneumatic collet 291 of the infusion hose tensioning mechanism 29 clamps the infusion hose 02, then the upper collet 28A and the lower collet 28B of the pneumatic collet 28 are folded to clamp the infusion hose 02, and when the upper collet 28A descends, the thrust roller 293 is driven to descend, because the elasticity of the pressure spring 2933 is greater than the elasticity of the two pressure springs 2923, the roller 2934 at the lower end of the thrust roller 293 pushes the inclined boss 2925 of the vertical plate 2921, the vertical plate 2921 drives the pneumatic collet 291 to move in the positive direction of the X axis, and the infusion hose 02 clamped between the pneumatic collet 291 and the three rubber jaws of the medium-general-type three-jaw cylinder 351 is tensioned and straightened by the elasticity of the pressure springs 2923. After the infusion hose 02 is tensioned and straightened, the single-rod cylinder 221 pushes the pneumatic chuck 27 and the pneumatic scissors 26 out along the positive direction of the Y axis, and the pneumatic chuck 27 clamps the infusion hose 02; finally, the pneumatic scissors 26 cut the infusion tube 02. To this end, the single infusion hose delivery device 20 is completed for one cycle.

(12) The three-rod cylinder 62 of the glue dispensing device 60 contracts to drive the glue dispensing gun 61 to descend, and the glue outlet of the glue dispensing gun 61 is just lapped on the outer surface of the infusion hose 02 to perform glue injection.

(13) After the glue outlet of the glue dispensing gun 61 is lapped on the outer surface of the infusion hose 02, the motor 39 continues to rotate, the driving bevel gear 341 drives the bevel gear shaft 342 to rotate through the driven bevel gear 3421, and simultaneously the driving cylindrical gear 352 drives the driven cylindrical gear 353 and the middle-passage three-jaw cylinder 351 to rotate at a constant speed. The three-jaw cylinder 351 moves in the negative direction of the X-axis while rotating, that is, the front end of the infusion hose 02 is gradually inserted to the bottom of the straight three-way joint 01 in a screw feeding manner.

(14) Due to the pre-insertion action in the front, the pipe with the length of about 1mm at the front end of the infusion hose 02 is not coated with glue during the pre-insertion, and after the secondary insertion is completed, the motor 39 needs to be reversed to enable the infusion hose 02 to retreat about 1.5mm, so that a small section of the infusion hose 02 pre-inserted is also coated with glue. Finally, the motor 39 rotates forwards again, the infusion hose 02 is inserted to the bottom again, and the single infusion hose 02 and the single-hole end of the straight three-way joint complete the assembly work.

The operation of the dual fluid hose and fitting assembly apparatus 300 is as follows:

(1) two parallel infusion hoses 02 with a diameter of 4.00mm fed in from two hose feeding rollers 96 in the positive direction of the X-axis are passed through two rollers of the hose support frame 91.

(2) After the straight three-way joint 01 assembly product assembled in the previous period and with the infusion hoses 02 on two sides cut off is taken out of the clamp 70, the pneumatic scissors 45 move along the Y-axis negative direction under the pushing of the three-rod cylinder 43 to make room. Then, the linear module 41 drives the platen 42 and the members on the platen 42 to move forward in the X-axis direction, and the pneumatic clamp 44 and the pneumatic clamp 47 clamp the two infusion hoses 02 and insert the front ends of the two infusion hoses 02 into the opened clamping holes of the double-tube reducing clamp 53A of the double-tube reducing mechanism 53.

(3) The fingers of the lower finger cylinder 539 of the double-pipe pinch tube clamp driving mechanism are opened to drive the lower clamp 534 to move upwards, so that the two transfusion hoses 02 are respectively attached to the side walls of the upper part of the U-shaped groove 535 of the lower clamp 534; then, the fingers of the upper finger cylinder 538 are opened to drive the upper clamp 533 to move downwards, the two downward-protruding V-shaped protrusions 536 of the upper clamp 533 press on the upper parts of the two infusion hoses 02 respectively, the upper parts of the two infusion hoses 02 are squashed (recessed downwards) by the two V-shaped protrusions 536 respectively under the pressing of the two downward-protruding V-shaped protrusions 536, and simultaneously, the two infusion hoses 02 are pressed to the bottoms of the two U-shaped grooves 535 of the lower clamp 534 respectively, and since the width of the U-shaped groove 535 is 3.80mm, the outer diameter of the infusion hose 02 with the diameter of 4.00mm is reduced to 3.80mm at the moment (the transverse width of the infusion hose 02 is reduced to 3.80mm, and the vertical height is also less than 3.80 mm).

(4) The pneumatic clamp 44 and the pneumatic clamp 47 of the double infusion hose feeding device 40 release the two infusion hoses 02 respectively. The motor 57 rotates, and the driving bevel gear 541 drives the bevel gear shaft 542 to rotate through the driven bevel gear 5421. The gear shaft 5422 at the rear end of the bevel gear shaft 542 rolls on the rack 543 to drive the base 52 and all components on the base 52 to move in the positive direction of the X axis, and the double-tube contracting clamp 53A of the double-tube front-end contracting mechanism 53 clamps two infusion hoses 02 to be inserted into two inner holes at the double-hole end of the straight three-way joint 01. The insertion depth is about 1.00mm, and the pre-insertion of the two infusion hoses 02 is completed.

(5) The double-tube pinch clamp 53A still clamps two infusion hoses 02, the three-rod cylinder 551 drives the double-tube pinch clamp 55A to lift the lower chuck 556, the two infusion hoses 02 are clamped by the upper chuck 555, and the two infusion hoses 02 respectively fall into the two arc-shaped grooves 5564 of the lower chuck 556.

(6) Fingers of a lower finger cylinder 539 and an upper finger cylinder 538 of the double-tube pinch tube clamp driving mechanism are respectively closed, an upper clamp 533 and a lower clamp 534 of the double-tube pinch tube clamp 53A are opened, and two infusion hoses 02 are released. The single-rod cylinder 5321 drives the vertical plate 531 of the double-tube front-end tube reducing mechanism 53 and the double-tube reducing clamp 53A to move along the positive direction of the Y axis, so that a space is reserved for secondary insertion work.

(7) At the same time, the linear module 41 of the dual fluid hose conveying device 40 drives the platen 42 and the machine members on the platen 42 to retract to the initial position along the negative X-axis direction.

(8) The pneumatic clamp 47 first clamps the two infusion hoses 02. The pneumatic clamp 44 is then actuated, and the upper clamp 442 of the pneumatic clamp 44 is lowered to actuate the dual fluid hose tensioning mechanism. Before the pneumatic chuck 44 is not completely clamped, the thrust roller 49 pushes the pneumatic chuck 47 to clamp the two infusion hoses 02 to move along the negative direction of the X axis through the inclined boss 4811 on the vertical plate 481, and the two infusion hoses 02 between the pneumatic chuck 47 and the double-pipe hose clamp 55A are tensioned and straightened.

(9) The pneumatic scissors 45 are driven by the three-rod cylinder 43 to push out along the positive direction of the Y axis, and the pneumatic scissors 45 cut off the two infusion hoses 02. To this end, the work task of one cycle of the dual fluid hose conveying device 40 is completed.

(10) The three-rod cylinder 62 of the two sets of glue dispensing devices 60 contracts to drive the glue dispensing guns 61 to descend, and the glue outlets of the two glue dispensing guns 61 are just lapped on the outer surfaces of the two infusion hoses 02. And (6) injecting glue.

(11) The motor 57 rotates again, the cylindrical gear at the front end of the gear shaft 552 drives the rack 553 to move horizontally along the positive direction of the Y axis, and drives the upper chuck 555 of the pipe clamp 55A to move horizontally along the positive direction of the Y axis. Because the two infusion hoses 02 are clamped between the upper chuck 555 and the lower chuck 556 of the double-tube rubbing pipe clamp 55A, the upper rubber washboard 5551 and the lower rubber washboard 5562 of the double-tube rubbing pipe clamp 55A have larger surface friction coefficient, and the upper chuck 555 moves horizontally relative to the lower chuck 556 along the positive direction of the Y axis, so that the two infusion hoses 02 rotate in the arc-shaped groove 5564 of the double-tube rubbing pipe clamp 55A; on the other hand, when the motor 57 rotates, the driving bevel gear 541 rotates the bevel gear shaft 542 via the driven bevel gear 5421. The gear shaft 5422 at the rear end of the bevel gear shaft 542 rolls on the rack 543 to drive the base 52 and all components on the base 52, including the double-pipe hose clamp 55A, to move in the positive direction of the X-axis. Then, the distal ends of the two infusion hoses 02 are inserted into the bottom of the inner hole of the two ends of the straight three-way joint 01 while being rotated.

(12) Due to the pre-insertion action, the pipes with the length of about 1mm at the front ends of the two infusion hoses 02 are not coated with glue during the pre-insertion. Therefore, after the second insertion is completed, the motor 57 needs to be rotated reversely to retract the two infusion hoses 02 by about 1.5mm, so that a small section of hose which is not coated with glue is inserted in advance and is also coated with glue. Finally, the motor 57 rotates forward again, and the two infusion hoses 02 are inserted to the bottom again. So far, the assembly work of the two infusion hoses 02 and the double-hole ends of the straight three-way joint is completed.

Claims

1. The method for assembling the infusion hose and the straight tee joint is characterized by comprising the following steps of:

2. The assembly method according to claim 1, comprising the steps of:

201) the single-tube front-end pipe contracting mechanism comprises a pipe contracting clamp, the pipe contracting clamp comprises an upper clamp, a lower clamp and a pipe contracting clamp driving mechanism, a chuck of the pipe contracting clamp lower clamp comprises a U-shaped groove with an upward opening, and a chuck of the pipe contracting clamp upper clamp comprises a V-shaped bulge protruding downwards; the width of the U-shaped groove of the lower clamp of the pinch clamp is smaller than the diameter of the single infusion hose, when the single tube front end tube contracting mechanism contracts the tube, the V-shaped bulge of the upper clamp of the pinch clamp descends to press on the upper part of the rear end of the single infusion hose along the X-axis direction to flatten the upper part of the single infusion hose, and meanwhile, the rear end of the single infusion hose along the X-axis direction is pressed downwards to the bottom of the U-shaped groove of the lower clamp of the pinch clamp, so that the transverse size and the height size of the rear end of the single infusion hose along the X-axis direction are both smaller than the diameter of an inner hole of;

202) the double-tube reducing pipe clamp comprises an upper clamp, a lower clamp and a double-tube reducing pipe clamp driving mechanism, a chuck of the double-tube reducing pipe clamp lower clamp comprises two U-shaped grooves with upward openings, the chuck of the double-tube reducing pipe clamp upper clamp comprises two V-shaped protrusions protruding downwards, the width of the U-shaped grooves of the double-tube reducing pipe clamp lower clamp is smaller than the diameter of the parallel infusion hoses, when the double-tube front end reducing pipe mechanism reduces the pipe, the two V-shaped protrusions of the double-tube reducing pipe clamp upper clamp press the upper portions of the front ends of the two parallel infusion hoses along the X-axis direction, the upper portions of the two parallel infusion hoses are flattened, the front ends of the two parallel infusion hoses along the X-axis direction are pressed downwards to the bottoms of the two U-shaped grooves of the double-tube reducing pipe clamp lower clamp, and the transverse size and the height size of the rear ends of the two parallel infusion hoses along the X-axis.

3. The assembly method according to claim 1, comprising the steps of:

301) in step 102, when the single-tube secondary insertion mechanism inserts the single pre-inserted infusion hose into the inner hole of the single-hole end of the straight three-way joint, the single infusion hose rotates around the axis of the single infusion hose and feeds along the negative direction of the X axis, and the single infusion hose is inserted into the hole bottom of the inner hole of the single-hole end of the straight three-way joint in a spiral feeding mode;

302) in step 103, when the two pre-inserted infusion hoses are inserted into the two inner holes at the two-hole end of the straight three-way joint by the double-pipe secondary insertion mechanism, the two parallel infusion hoses are rotated around the respective axes and fed along the positive direction of the X axis, and are inserted into the hole bottoms of the two inner holes at the two-hole end of the straight three-way joint in a spiral feeding manner respectively.

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

401) the single-tube secondary inserting mechanism comprises a middle-way multi-claw cylinder and a feeding mechanism of the middle-way multi-claw cylinder along the X-axis negative direction, in the step 301, the middle-way multi-claw cylinder clamps a single pre-inserted infusion hose, and rotates one edge to feed along the X-axis negative direction to insert the single infusion hose into the bottom of an inner hole at the single-hole end of the straight three-way connector;

402) the double-tube secondary inserting mechanism comprises a double-tube-rubbing clamp and a feeding mechanism of the double-tube-rubbing clamp along the positive direction of the X axis, in step 302, the double-tube-rubbing clamp clamps two parallel infusion hoses, an upper rubbing plate and a lower rubbing plate of the double-tube-rubbing clamp move relatively along the direction of the Y axis, the two parallel infusion hoses are rubbed to rotate around respective axes, and the double-tube-rubbing clamp simultaneously drives the two parallel infusion hoses to feed along the positive direction of the X axis to insert the two parallel infusion hoses into the bottoms of two inner holes at the two hole ends of the straight three-way joint.

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

501) in step 301, when the single-tube secondary insertion mechanism inserts a single infusion hose to be inserted into an inner hole at a single-hole end of the straight three-way joint, the glue dispensing device is used for injecting glue into a part to be inserted of the single infusion hose; after a single infusion hose is inserted to the bottom of a hole along the negative direction of an X axis, a single-tube secondary insertion mechanism drives the single infusion hose to rotate reversely around the axis of the single infusion hose and retract 1mm to 2mm along the positive direction of the X axis; then, the hole is inserted to the bottom of the hole along the negative direction of the X axis while rotating around the axis of the hole;

502) when the double-tube secondary inserting mechanism inserts two pre-inserted infusion hoses into two inner holes at the two hole ends of the straight three-way joint, the two sets of glue dispensing devices respectively glue the parts to be inserted of the two parallel infusion hoses; after two parallel infusion hoses are inserted to the bottom of the hole along the positive direction of the X axis, the double-tube secondary insertion mechanism drives one side of each of the two parallel infusion hoses to rotate reversely around the respective axis, and the side of each of the two parallel infusion hoses returns to 1mm to 2mm along the negative direction of the X axis; then, it is inserted again to the bottom of the hole in the positive direction of the X-axis while rotating around the respective axis.

6. The assembly method according to claim 1, comprising the steps of:

601) the single infusion hose conveying device is located in front of the single-tube secondary insertion mechanism in the X-axis direction and sequentially comprises a first pneumatic shear, a first pneumatic chuck, a second pneumatic chuck and an infusion hose tensioning mechanism in the X-axis direction, in step 102, the single-tube pre-assembly feeding mechanism pre-inserts the end portion of a single contracted infusion hose into an inner hole of a single-hole end of the straight three-way joint, after the single-tube secondary insertion mechanism clamps the single infusion hose, the single infusion hose conveying device resets in the positive direction of the X-axis before the single infusion hose is further inserted into the inner hole of the single-hole end of the straight three-way joint after the single-tube secondary insertion mechanism clamps the single infusion hose, the pneumatic chuck of the infusion hose tensioning mechanism is pushed to move in the X-axis direction by the second pneumatic chuck in the process of clamping the single infusion hose, so that the single infusion hose tensioning mechanism is enabled to tension in the X-axis direction, Straightening; after a single infusion hose is tensioned and straightened, the first pneumatic chuck clamps the single infusion hose, and the first pneumatic shear shears the single infusion hose;

602) the double-liquid-hose conveying device is positioned behind the double-pipe secondary inserting mechanism along the X-axis direction and sequentially comprises a double-liquid-hose tensioning mechanism, a fourth pneumatic chuck and a second pneumatic shear along the X-axis direction, in step 103, the double-pipe pre-assembling feeding mechanism pre-inserts the end parts of two contracted liquid hoses into two inner holes at the two hole ends of the straight three-way joint, the double-pipe secondary inserting mechanism clamps the two parallel liquid hoses, before the two liquid hoses are further inserted into the two inner holes at the two hole ends of the straight three-way joint, the double-liquid-hose conveying device resets along the negative direction of the X-axis, the pneumatic chucks of the double-liquid-hose tensioning mechanism clamp the two parallel liquid hoses, and the fourth negative pneumatic chuck pushes the pneumatic chucks of the double-liquid-hose tensioning mechanism to move towards the X-axis direction in the process of clamping the two parallel liquid hoses, tensioning and straightening the two transfusion hoses; after the two transfusion hoses are tensioned and straightened, the second pneumatic scissors cut off the two parallel transfusion hoses under the support of the fourth pneumatic chuck.

7. The method of assembling of claim 6, comprising the steps of:

701) after the step 102 and the step 103 are completed, the assembled product taking-out mechanism takes out the assembled product of the straight three-way joint and the infusion hose;

702) after the step 701 is completed, the first pneumatic shear avoids towards the negative direction of the Y axis, the first pneumatic chuck, the second pneumatic chuck and the pneumatic chuck of the infusion hose tensioning mechanism clamp a single infusion hose to move towards the negative direction of the X axis together, and the single infusion hose is conveyed to the single infusion hose inserting device; then, the first pneumatic chuck avoids along the negative direction of the Y axis, the second pneumatic chuck and the pneumatic chuck of the transfusion hose tensioning mechanism clamp a single transfusion hose together to further move towards the negative direction of the X axis, and the single transfusion hose is conveyed to the single-pipe front-end pipe reducing mechanism;

703) after the step 701 is completed, the second pneumatic shear avoids the Y-axis in the negative direction, the fourth pneumatic chuck and the pneumatic chuck of the double-liquid-hose tensioning mechanism clamp two parallel liquid conveying hoses to move in the X-axis direction together, and the two parallel liquid conveying hoses pass through the double-pipe secondary inserting mechanism and are conveyed to the double-pipe front-end pipe contracting mechanism.

8. The method of assembling of claim 6, wherein the second pneumatic collet comprises a V-shaped jaw and a flat jaw, the V-shaped jaw being distal from the first pneumatic collet, the flat jaw of the second pneumatic collet being proximal to the first pneumatic collet; the upper chuck of the second pneumatic chuck comprises two vertically arranged clamping pieces, the lower chuck of the second pneumatic chuck comprises three vertically arranged clamping pieces, a gap which is larger than the thickness of the clamping pieces is arranged between the clamping pieces along the X-axis direction, and the clamping pieces of the upper chuck and the clamping pieces of the lower chuck are staggered along the X-axis direction; the clamping piece of the upper clamping head of the second pneumatic clamping head and the two clamping pieces of the lower clamping head, which are far away from the first pneumatic clamping head, respectively comprise a protruding part, each protruding part comprises a V-shaped groove, and the bottom of each V-shaped groove comprises an arc surface; when the second pneumatic chuck is clamped, the protruding parts of the clamping pieces of the upper chuck are inserted into the gaps between the clamping pieces of the lower chuck, and the protruding parts of the clamping pieces of the lower chuck are inserted into the gaps between the clamping pieces of the upper chuck to form the V-shaped clamping opening; when the second pneumatic chuck is clamped, the clamping piece of the lower chuck of the second pneumatic chuck, which is close to the first pneumatic chuck, and the non-protruding part of the clamping piece of the upper chuck of the second pneumatic chuck, which is close to the first pneumatic chuck, form a flat clamping opening of the second pneumatic chuck; the fourth pneumatic chuck comprises a double-V-shaped clamping opening and a flat clamping opening, the double-V-shaped clamping opening is far away from the second pneumatic shear, and the flat clamping opening of the fourth pneumatic chuck is close to the second pneumatic shear; the upper chuck of the fourth pneumatic chuck comprises two vertically arranged clamping pieces, the lower chuck of the fourth pneumatic chuck comprises three vertically arranged clamping pieces, a gap which is larger than the thickness of the clamping pieces is arranged between the clamping pieces along the X-axis direction, and the clamping pieces of the upper chuck and the clamping pieces of the lower chuck are staggered along the X-axis direction; the clamping piece of the upper clamping head of the fourth pneumatic clamping head and the two clamping pieces of the lower clamping head, which are far away from the second pneumatic shear, respectively comprise a protruding part, the protruding part of the lower clamping head of the fourth pneumatic clamping head comprises double V-shaped grooves, and the bottoms of the two V-shaped grooves of the double V-shaped grooves respectively comprise cambered surfaces; the protruding part of the upper chuck of the fourth pneumatic chuck comprises a V-shaped groove with a flat bottom; when the fourth pneumatic chuck is clamped, the protruding parts of the clamping pieces of the upper chuck are inserted into the gaps between the clamping pieces of the lower chuck, and the protruding parts of the clamping pieces of the lower chuck are inserted into the gaps between the clamping pieces of the upper chuck to form the double-V-shaped clamping opening; when the fourth pneumatic chuck is clamped, the clamping piece of the fourth pneumatic chuck lower chuck close to the second pneumatic shear and the non-protruding part of the clamping piece of the fourth pneumatic chuck upper chuck close to the second pneumatic shear form a flat clamping opening of the fourth pneumatic chuck.

9. The method of assembling of claim 1, wherein the double V-shaped groove of the lower cartridge of the fourth pneumatic cartridge comprises a V-shaped groove and a partition vertically disposed between the V-shaped groove and dividing the V-shaped groove into said two V-shaped grooves.

10. The assembling method according to claim 1, wherein the pressing piece of the joint jig includes two hook heads, the head portions of the hook heads project in the Y-axis direction; the two chucks of the pneumatic picking clamp of the assembled product picking mechanism respectively comprise three clamping pieces; the pneumatic workpiece taking clamp is arranged behind the pressing block along the Y-axis direction, and the three clamping pieces and the two hook heads are staggered along the X-axis direction; after the straight three-way joint and the three infusion hoses are assembled, the method comprises the following steps:

1001) the pneumatic workpiece taking clamp moves forward along the Y-axis direction, the front end of the pneumatic workpiece taking clamp is inserted into the connector clamp, the middle clamping piece of the pneumatic workpiece taking clamp clamps the straight tee joint, and the clamping pieces on the two sides of the pneumatic workpiece taking clamp respectively clamp the infusion hoses at the two ends of the straight tee joint;

1002) the pressing block and the pneumatic workpiece taking clamp which clamps the assembled product ascend to make room; a new straight three-way joint is supplemented into a straight three-way joint placing groove of the joint clamp from the feeding track of the vibration disc along the negative direction of the Y axis;

1003) the pneumatic workpiece taking clamp carries the assembled product to move forwards along the Y-axis direction, so that a descending space of the two hook heads is formed; the pressing block descends to press the new straight three-way joint; the pneumatic picking clamp carries the assembled product to move along the negative direction of the Y axis, and the assembled product is picked out.