CN218461408U - Needle seat assembling device - Google Patents

Abstract

The utility model discloses a needle file assembly device, including the syringe needle feed mechanism that is used for providing the syringe needle, be used for the needle tubing of centre gripping needle to embrace tightly the mechanism, syringe needle feed mechanism and needle tubing are embraced and are provided with the transfer mechanism between tightly the mechanism, transfer the mechanism including the rotatory lifting unit who receives the syringe needle among the syringe needle feed mechanism, be used for the syringe needle among the rotatory lifting unit to align the rotatory subassembly that aligns of needle tubing and be used for driving the rotatory drive assembly who aligns the subassembly motion. The advantages are that: it is fixed with the needle tubing to hold the mechanism tightly through the needle tubing, utilizes and shifts the mechanism and receive the needle file and be responsible for passing the needle file to needle tubing one side, accomplishes the equipment of needle file, and whole process needle tubing is firmly fixed, and difficult emergence is out of shape, because the stability of needle tubing, can guarantee that the yield of needle file and needle tubing equipment improves by a wide margin simultaneously.

Description

Needle seat assembling device

Technical Field

The utility model relates to a needle file equipment field specifically is a needle file assembly quality.

Background

The needle file needs to be assembled with the needle tubing, and current assembly mode need snatch the needle file at the in-process of equipment, then utilizes the needle file fixed, recycles fixture centre gripping needle tubing, promotes the needle tubing from needle tubing one side for the needle tubing accomplishes the equipment with the needle file. This type of assembly has the following problems: due to the flexibility of the material of the needle tube, the needle tube is easy to deform and unqualified to assemble in the pushing or clamping process.

In view of the above, it is desirable to provide a needle hub assembly device.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of needle file assembly quality, the effectual needle tubing that has solved current needle file assembly in-process warp and the unqualified problem of equipment.

The utility model adopts the technical proposal that:

the utility model provides a needle file assembly quality, includes the syringe needle feeding mechanism that is used for providing the syringe needle, is used for the needle tubing of centre gripping needle to embrace tightly the mechanism, syringe needle feeding mechanism and needle tubing embrace and are provided with the transfer mechanism between the mechanism, transfer the mechanism including the rotatory lifting unit who receives the syringe needle among the syringe needle feeding mechanism, be used for to align the rotatory subassembly that aligns of the syringe needle among the rotatory lifting unit and be used for driving the rotatory drive assembly who aligns the subassembly motion.

Further, the method comprises the following steps: the needle head feeding mechanism comprises a mechanical arm arranged on one side of the transfer mechanism, and two first clamping jaws are arranged on the mechanical arm.

Further, the method comprises the following steps: the transfer mechanism comprises a mounting frame, the rotary lifting assembly is arranged on one side, close to the needle head feeding mechanism, of the mounting frame, the rotary lifting assembly comprises a rotary cylinder arranged on the mounting frame, a connecting plate arranged on the output end of the rotary cylinder, two guide pillars symmetrically arranged on the connecting plate along the rotation center of the rotary cylinder, a connecting post connected with the upper ends of the guide pillars, a linear bearing sleeved on the two guide pillars respectively, a mounting plate fixedly connected with the two linear bearings, a plurality of jigs symmetrically arranged on two sides of the mounting plate along the rotation center of the rotary cylinder, and a single-shaft cylinder fixedly arranged on the mounting frame, wherein the output end of the single-shaft cylinder is upwards arranged, the output end of the single-shaft cylinder is provided with a coupler, the coupler is provided with a rotating shaft sleeved at the rotation center of the rotary cylinder, and the rotating shaft is fixedly connected with the mounting plate.

Further, the method comprises the following steps: the fixed linear guide that is provided with on the mounting bracket, rotatory alignment subassembly includes that the sliding plate that slides and set up on linear guide, the fixed curb plate that sets up in the sliding plate both sides, correspond ball bearing and both ends that set up on two curb plates respectively and two the ball bearing rotates the rotation piece of connecting, rotate a ball bearing that one end stretches out one of them curb plate and be provided with staple bolt spare, be located the slant is provided with No. two unipolar cylinders on the curb plate of staple bolt spare one side, no. two unipolar cylinders's output and staple bolt spare fixed connection, be provided with a plurality of L templates on the rotation piece, the vertical linear guide that is provided with No. two on the L template, the slip is provided with No. two cylinder clamping jaws on No. two linear guide, still slide on the L template and be provided with the guide arm with No. two cylinder clamping jaw fixed connection, the cover is equipped with the spring on the guide arm, the spring both ends offset with No. two cylinder clamping jaws and L template upper end respectively.

Further, the method comprises the following steps: the mounting bracket includes the bottom plate and sets up the board and set up No. two boards on No. one board in the bottom plate both sides, linear guide sets up on No. two boards, be provided with the through-hole on No. two boards, drive assembly includes the fixed linear module that sets up on the bottom plate, sets up the fixing base at No. two board lower extremes, the fixed linear guide that sets up on the bottom plate, the fixed connecting block that sets up the output at linear module, respectively with connecting block and sliding plate articulated connecting rod, the connecting rod includes a pole, no. two poles and No. three poles, a pole both ends are articulated with connecting block and No. two pole one end respectively, no. three pole both ends are articulated with sliding plate and No. two pole other ends respectively, the connecting block is connected with No. three linear guide sliding, no. two poles are articulated with the fixing base.

Further, the method comprises the following steps: the needle tube holding mechanism comprises a support arranged on the other side of the transfer mechanism, a fourth cylinder arranged on the support and with an output end upwards, a plurality of second linear bearings fixedly arranged on the support, a guide shaft sleeved in the second linear bearings, a fifth plate connected with the upper end of the guide shaft, a sixth plate connected with the lower end of the guide shaft, and a plurality of fourth cylinder clamping jaws arranged on the sixth plate, wherein the support is further provided with a butt component corresponding to the fourth cylinder clamping jaws, the butt component is positioned on one side of the transfer mechanism away from the fourth cylinder clamping jaws, the butt component comprises a sixth cylinder arranged on the support and with an output end facing one side of the transfer mechanism, a square plate fixedly arranged on the output end of the sixth cylinder, and a cylindrical sleeve arranged on the direction plate and in one-to-one correspondence with clamping positions of the fourth cylinder clamping jaws, a through hole is arranged in the cylindrical sleeve, and an arc transition guide groove is arranged on one side of the through hole close to the fourth cylinder clamping jaw.

Utility model's beneficial effect:

1. the needle tube is fixed through the needle tube holding mechanism, the needle seat is received by the transfer mechanism and is in charge of pushing the needle seat to one side of the needle tube, the needle seat is assembled, the needle tube is firmly fixed in the whole process, deformation is not easy to occur, and meanwhile, due to the stability of the needle tube, the yield of assembling the needle seat and the needle tube can be greatly improved.

2. Through setting up the tool in mounting panel both sides, can be so that revolving cylinder will have the tool of syringe needle and rotate when the needle tubing aligns the subassembly, opposite side tool aligns with syringe needle feeding mechanism, is convenient for continuously receive the syringe needle. Through the rotating shaft which is arranged at the rotating center of the rotating cylinder, the lifting of the jig can be more convenient and stable.

3. Through setting up the connecting rod, utilize sharp module drive connecting rod motion and then drive the motion of rotatory alignment subassembly, can utilize the inside space of mounting bracket to set up drive assembly, the effectual space of practicing thrift the transfer mechanism.

Drawings

Fig. 1 is an overall schematic view of a needle hub assembly device provided in an embodiment of the present application.

FIG. 2 is a schematic view of the needle feeding mechanism of FIG. 1 with the needle removed.

Fig. 3 is a schematic view of a rotary lifting assembly of a transfer mechanism of a needle hub assembly device provided by an embodiment of the present application.

Fig. 4 is a schematic view of a needle clasping mechanism of a needle hub assembly apparatus provided by an embodiment of the present application.

Fig. 5 is a schematic view of the transfer mechanism of the needle hub assembly device provided in the embodiments of the present application with the rotary lifting assembly removed.

Fig. 6 is a schematic view of a needle hub assembled holder, linear guide number one, and drive assembly provided by an embodiment of the present application.

Labeled as: 1. a needle feeding mechanism; 2. a needle tube clasping mechanism; 3. a transfer mechanism; 31. a rotary lifting assembly; 32. rotating the alignment assembly; 33. a drive assembly; 101. a manipulator; 102. a first clamping jaw; 34. a mounting frame; 311. a rotating cylinder; 312. a connecting plate; 313. a guide post; 314. a first linear bearing; 315. mounting a plate; 316. a jig; 317. a first single-shaft cylinder; 318. a coupling; 35. a first linear guide rail; 3201. a sliding plate; 3202. a side plate; 3203. a second single-shaft cylinder; 3204. a rotating member; 3205. a hoop member; 3206. an L-shaped plate; 3207. a second linear guide rail; 3208. a second cylinder clamping jaw; 3209. a guide bar; 3210. a spring; 341. a base plate; 342. a first board; 343. a second plate; 331. a first straight line module; 332. a fixed seat; 333. a third linear guide rail; 334. connecting blocks; 335. a first rod; 336. a second rod; 337. a third rod; 201. a support; 202. a guide shaft; 203. a cylinder number four; 204. a second linear bearing; 205. a fifth panel; 206. a sixth panel; 207. a fourth cylinder clamping jaw; 208. a number six cylinder; 209. a square plate; 210. a cylindrical sleeve; 2100. circular arc transition guide way.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

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

As shown in fig. 1, a needle holder assembly device provided in the embodiment of the present application structurally includes a needle feeding mechanism 1 for providing a needle, a needle clasping mechanism 2 for holding a needle, a transfer mechanism 3 is provided between the needle feeding mechanism 1 and the needle clasping mechanism 2, the transfer mechanism 3 includes a rotary lifting assembly 31 for receiving the needle in the needle feeding mechanism 1, a rotary alignment assembly 32 for aligning the needle in the rotary lifting assembly 31 with the needle, and a driving assembly 33 for driving the rotary alignment assembly 32 to move.

In actual use, the needle feeding mechanism 1 grabs the needle from the external feeding device, then transfers the needle to the rotary lifting assembly 31, then the rotary alignment assembly 32 grabs the needle in the rotary lifting assembly 31, the driving assembly 33 drives the rotary alignment assembly 32 to move towards the side of the needle holding mechanism 2, and the needle holding mechanism 2 cooperates with the rotary alignment assembly 32 to assemble the needle with the needle.

In the above-mentioned design, it is fixed with the needle tubing to hold mechanism 2 tightly through the needle tubing, utilizes transfer mechanism 3 to receive the needle file and is responsible for passing the needle file to needle tubing one side, accomplishes the equipment of needle file, and whole process needle tubing is firmly fixed, and difficult emergence is out of shape, because the stability of needle tubing, can guarantee that the yield of needle file and needle tubing equipment improves by a wide margin simultaneously.

Specifically, the method comprises the following steps: as shown in fig. 1, the needle feeding mechanism 1 includes a robot arm 101 disposed on one side of the transfer mechanism 3, and two first-type gripping jaws 102 are disposed on the robot arm 101.

In practical use, the manipulator 101 rotates to enable the first clamping jaw 102 to rotate to the external feeding mechanism, the first clamping jaw 102 grips a needle at any time, the manipulator 101 drives the first clamping jaw 102 to move to the rotary lifting assembly 31, and the first clamping jaw 102 places the needle in the rotary lifting assembly 31.

In the above-mentioned design, can make the syringe needle by quick accurate snatching and shifting, effectual improvement work efficiency.

Specifically, the method comprises the following steps: as shown in fig. 2, fig. 3 and fig. 5, the transfer mechanism 3 includes a mounting frame 34, the rotary lifting assembly 31 is disposed on one side of the mounting frame 34 close to the needle feeding mechanism 1, the rotary lifting assembly 31 includes a rotary cylinder 311 disposed on the mounting frame 34, a connecting plate 312 disposed on an output end of the rotary cylinder 311, two guide posts 313 symmetrically disposed on the connecting plate 312 along a rotation center of the rotary cylinder 311, a connecting post connected to an upper end of the guide post 313, a first linear bearing 314 disposed on the guide post 313, a mounting plate 315 fixedly connected to the two first linear bearings 314, a plurality of jigs 316 symmetrically disposed on two sides of the mounting plate 315 along the rotation center of the rotary cylinder 311, and a first single-axis cylinder 317 fixedly disposed on the mounting frame 34, an output end of the first single-axis cylinder is disposed upward, an output end of the first single-axis cylinder 317 is disposed with a coupling 318, a rotating shaft disposed on the coupling 318 and sleeved on the rotation center of the rotary cylinder 311, and the rotating shaft is fixedly connected to the mounting plate 315.

It should be noted that the end of the needle used for connecting with the needle tube is tubular, and the fixture 316 is provided with a column inserted into the tubular shape of the needle.

During the in-service use, revolving cylinder 311 drives connecting plate 312 to rotate, make a plurality of jigs 316 that set up in mounting panel 315 one side rotatory to the below that clamping jaw 102 corresponds No. one, make the syringe needle place on jig 316, revolving cylinder 311 drives connecting plate 312 to rotate, make the jig 316 of placing the needle tubing correspond No. two cylinder clamping jaws 3208, opposite side jig 316 is rotatory to being arranged in receiving the syringe needle among the syringe needle feeding mechanism 1, no. one unipolar cylinder 317 drives mounting panel 315 and shifts up afterwards, no. two cylinder clamping jaws 3208 press from both sides the syringe needle, no. one unipolar cylinder 317 resets afterwards, syringe needle feeding mechanism 1 places the syringe needle on opposite side jig 316.

In the above design, by arranging the jigs 316 on the two sides of the mounting plate 315, when the jig 316 with the needle head of the rotary cylinder 311 rotates to the needle tube alignment assembly, the jig 316 on the other side aligns with the needle head feeding mechanism 1, which is convenient for continuously receiving the needle head. Through the setting of the rotating shaft penetrating through the rotating center of the rotating cylinder 311, the lifting of the jig 316 can be more convenient and stable.

Specifically, the method comprises the following steps: as shown in fig. 5 and 6, a first linear guide 35 is fixedly disposed on the mounting frame 34, the rotation alignment assembly 32 includes a sliding plate 3201 slidably disposed on the first linear guide 35, side plates 3202 fixedly disposed on both sides of the sliding plate 3201, ball bearings respectively disposed on two side plates 3202 correspondingly, and a rotating member 3204 rotatably connected with the two ball bearings respectively at both ends thereof, one end of the rotating member 3204 extends out of the ball bearings of one of the side plates 3202 and is provided with a hoop member 3205, a second single-shaft cylinder 3203 is obliquely disposed on the side plate 3202 on one side of the hoop member 3205, an output end of the second single-shaft cylinder 3203 is fixedly connected with the hoop member 3205, the rotating member 3204 is provided with a plurality of L-shaped plates 3206, a second linear guide 3207 is vertically disposed on the L-shaped plate 3206, a second cylinder clamping jaw 3208 is slidably disposed on the second linear guide 3207, a guide 3206 is further slidably provided with a guide rod 3209 fixedly connected with a clamping jaw 3210, and two ends of the spring 3210 respectively abut against the second cylinder clamping jaw 3208 and the second clamping jaw 3206.

During the in-service use, no. two unipolar cylinder 3203 drives and rotates piece 3204 and rotates the tool 316 that corresponds in the rotatory lifting unit 31 to No. two cylinder clamping jaws 3208, and under the circumstances that No. one unipolar cylinder 317 drive tool 316 rose afterwards, no. two cylinder clamping jaws 3208 got the syringe needle. Then, the second single-shaft cylinder 3203 drives the rotating element 3204 to rotate 180 degrees, so that the needle is aligned with the needle tube, and then the driving assembly 33 drives the rotation aligning assembly 32 to move along the first linear guide 35 to the side of the needle tube clasping mechanism 2.

In the above design, the structure and embodiment of the rotational alignment assembly 32 enable the needle to be quickly and stably turned over and aligned with the clasping mechanism after being gripped.

Specifically, the method comprises the following steps: as shown in fig. 5, the mounting frame 34 includes a bottom plate 341, a first plate 342 disposed on two sides of the bottom plate 341, and a second plate 343 disposed on the first plate 342, the first linear guide 35 is disposed on the second plate 343, a through hole is disposed on the second plate 343, the driving assembly 33 includes a first linear module 331 fixedly disposed on the bottom plate 341, a fixed seat 332 disposed at a lower end of the second plate 343, a third linear guide 333 fixedly disposed on the bottom plate 341, a connecting block 334 fixedly disposed at an output end of the first linear module 331, and connecting rods respectively hinged to the connecting block 334 and the sliding plate 3201, the connecting rods include a first rod 335, a second rod 336, and a third rod 337, two ends of the first rod 335 are respectively hinged to one ends of the connecting block 334 and the second rod 336, two ends of the third rod 337 are respectively hinged to the other ends of the sliding plate 3201 and the second rod 336, and the connecting block 334 is slidably connected to the third linear guide 333. The second rod 336 is hinged with the fixed seat 332.

During the in-service use, linear module 331 drives connecting block 334 and removes for No. one pole 335 drives No. two poles 336 and rotates around the pin joint of No. two poles 336 and fixing base 332, and No. two poles 336 drive No. three poles 337 and remove, and No. three poles 337 drive sliding plate 3201 along linear guide 35 motion at the in-process that removes.

In the above-mentioned design, through setting up the connecting rod, utilize sharp module drive connecting rod motion and then drive the motion of rotatory alignment subassembly 32, can utilize the inside space of mounting bracket 34 to set up drive assembly 33, the effectual space of having practiced thrift transfer mechanism 3.

Specifically, the method comprises the following steps: as shown in fig. 4, the needle tube clasping mechanism 2 includes a support 201 disposed on the other side of the transfer mechanism 3, a cylinder 203 of No. four disposed on the support 201 and having an output end disposed upward, a plurality of linear bearings 204 disposed fixedly on the support 201, a guide shaft 202 disposed in the linear bearing 204, a plate 205 of No. four disposed on the guide shaft 202, a plate 206 of No. six disposed on the lower end of the guide shaft 202, and a plurality of cylinder jaws 207 disposed on the plate 206 of No. four, the support 201 is further provided with a butting assembly corresponding to the cylinder jaws 207 of No. four, the butting assembly is disposed on one side of the transfer mechanism 3 away from the cylinder jaws 207 of No. four, the butting assembly includes a cylinder 208 disposed on the support 201 and having an output end disposed toward one side of the transfer mechanism 3, a square plate 209 disposed on the output end of the cylinder 208 of No. six, and a cylinder sleeve 210 disposed on the direction plate and corresponding to the clamping positions of the cylinder jaws 207 of No. four, a through hole is disposed in the cylinder sleeve 210, and an arc transition guide groove 2100 is disposed on one side of the through hole adjacent to one side of the cylinder 207 of the cylinder.

It should be noted that an external conveying line is provided between the transfer mechanism 3 and the needle tube clasping component, and the conveying line conveys the needle tubes to the lower side of the support 201.

In practical use, after the needle tube is conveyed to the lower part of the bracket 201 by the conveying line, the fourth cylinder 203 drives the fifth plate 205 to move downwards, so that the guide shaft 202 moves downwards along the second linear bearing 204, the fourth cylinder clamping jaw 207 arranged on the sixth plate 206 moves downwards and clamps the needle tube, and then the fourth cylinder 203 resets, so that the needle tube is aligned with the needle head. Then, the six cylinder 208 drives the square plate 209 to move toward the transfer mechanism 3, so that one end of the needle tube extends into the cylindrical sleeve 210 and abuts against the square plate 209.

In the above-mentioned design, through setting up the butt subassembly, can support the needle tubing tip and die, the needle tubing takes place horizontal displacement when preventing syringe needle and needle tubing equipment, leads to the equipment failure of syringe needle and needle tubing. The circular arc transition guide groove 2100 can facilitate the needle tube to extend into the cylindrical sleeve 210.

In the following detailed description, it should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.

Claims (6)

1. The needle base assembling device is characterized by comprising a needle head feeding mechanism (1) for providing a needle head and a needle tube holding mechanism (2) for clamping the needle tube, wherein a transfer mechanism (3) is arranged between the needle head feeding mechanism (1) and the needle tube holding mechanism (2), and the transfer mechanism (3) comprises a rotary lifting assembly (31) for receiving the needle head in the needle head feeding mechanism (1), a rotary alignment assembly (32) for aligning the needle head in the rotary lifting assembly (31) with the needle tube and a driving assembly (33) for driving the rotary alignment assembly (32) to move.

2. The needle hub assembly device of claim 1, wherein: the needle head feeding mechanism (1) comprises a mechanical arm (101) arranged on one side of the transfer mechanism (3), and two first clamping jaws (102) are arranged on the mechanical arm (101).

3. The needle hub assembly device of claim 1, wherein: transfer mechanism (3) include mounting bracket (34), rotatory lifting unit (31) set up and are close to syringe needle feeding mechanism (1) one side in mounting bracket (34), rotatory lifting unit (31) is including setting up revolving cylinder (311) on mounting bracket (34), setting up connecting plate (312) on revolving cylinder (311) output, set up two guide pillars (313) on connecting plate (312) along revolving cylinder (311) rotation center symmetry, connect the spliced pole of guide pillar (313) upper end, overlap respectively and establish a linear bearing (314) on two guide pillars (313), with mounting panel (315) of two linear bearing (314) fixed connection, set up a plurality of tools (316) and the fixed unipolar cylinder (317) that set up on mounting bracket (34) in mounting panel (315) both sides along the rotation center symmetry of revolving cylinder (311), the output of a unipolar cylinder (317) upwards sets up, the output of a unipolar cylinder (317) is provided with shaft coupling (318), set up the pivot of establishing at the rotation center of revolving cylinder (311) on shaft coupling (318), pivot and mounting panel (315) fixed connection.

4. A needle hub assembly device according to claim 3, wherein: the mounting bracket (34) is fixed with linear guide rail (35) No. one, rotatory alignment subassembly (32) including slide setting sliding plate (3201) on linear guide rail (35), fixed curb plate (3202) of setting in sliding plate (3201) both sides, correspond respectively and set up ball bearing and both ends on two curb plates (3202) respectively with two the ball bearing rotates the rotation piece (3204) of being connected, rotate the ball bearing that piece (3204) one end stretches out one of them curb plate (3202) and be provided with hoop member (3205), be located slant on curb plate (3202) of hoop member (3205) one side is provided with No. two unipolar cylinder (3203), the output and the hoop member (3205) fixed connection of No. two unipolar cylinder (3203), be provided with a plurality of L template (3206) on rotating piece (3204), vertically be provided with No. two linear guide rail (3207) on L template (3206), slide and be provided with No. two cylinder clamping jaw (3208) on No. two linear guide rail (3207), L template (3206) still be provided with No. two cylinder 3208) fixed guide bar (3209) and the cover are equipped with No. two cylinder 3200) and spring 3209 on the clamping jaw (3209) the guide bar (3200) the sleeve, the two block spring clamping pawl (3209) are equipped with the cylinder 3200) and are connected.

5. A needle hub assembly device according to claim 4, wherein: the mounting frame (34) comprises a bottom plate (341), a first plate (342) arranged on two sides of the bottom plate (341) and a second plate (343) arranged on the first plate (342), the first linear guide rail (35) is arranged on the second plate (343), a through hole is formed in the second plate (343), the driving assembly (33) comprises a first linear module (331) fixedly arranged on the bottom plate (341), a fixing seat (332) arranged at the lower end of the second plate (343), a third linear guide rail (333) fixedly arranged on the bottom plate (341), a connecting block (334) fixedly arranged at the output end of the first linear module (331), and connecting rods respectively hinged with the connecting block (334) and a sliding plate (3201), the connecting rods comprise a first rod (335), a second rod (336) and a third rod (337), two ends of the first rod (335) are respectively hinged with one end of the connecting block (334) and one end of the second rod (336), two ends of the third rod (337) are respectively hinged with the sliding plate (3201) and the second rod (336), and the other end of the third rod (336) is connected with the sliding plate (332).

6. The needle hub assembly device of claim 5, wherein: the needle tube clasping mechanism (2) comprises a support (201) arranged on the other side of the transfer mechanism (3), a fourth cylinder (203) arranged on the support (201) and with an output end upwards arranged, a plurality of second linear bearings (204) fixedly arranged on the support (201), a guide shaft (202) sleeved in the second linear bearings (204), a fifth plate (205) connected with the upper ends of the guide shafts (202), a sixth plate (206) connected with the lower ends of the guide shafts (202) and a plurality of fourth cylinder clamping jaws (207) arranged on the sixth plate (206), wherein a butt joint component corresponding to the fourth cylinder clamping jaws (207) is further arranged on the support (201), is located on one side of the transfer mechanism (3) and far away from the fourth cylinder clamping jaws (207), and comprises a sixth cylinder (208) arranged on the support (201) and with an output end towards one side of the transfer mechanism (3), a cylindrical plate (209) fixedly arranged on the output end of the sixth cylinder (208), a clamping sleeve (210) corresponding to the fourth cylinder clamping jaws (207) one side, and a cylindrical through hole (2100) is formed in the cylindrical through hole (210).

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