A blue hole needle assembly device

Abstract

The present invention relates to the field of automated production equipment for medical devices, and discloses a blue hole needle assembly device, which includes a workbench. A number of groups of assembly mechanisms are arranged along the circumference of the workbench. Each group of assembly mechanisms includes a push rod feeding device, a piston feeding device, a syringe barrel feeding device and a discharging device arranged in sequence along the circumference of the workbench. The push rod feeding device is connected to the discharging device of the adjacent assembly mechanism. The piston feeding device includes a piston flipping mechanism and a piston moving mechanism. A motor one is fixedly installed on the central axis at the bottom of the workbench. The output shaft of the motor one is fixedly connected with a driving rod. The upper end of the driving rod is fixedly connected with a disc. A number of groups of clamping mechanisms are fixedly connected to the disc. A driving mechanism for driving the piston moving mechanism to make reciprocating movements along the central axis direction of the workbench is arranged on the workbench. The present invention has the following advantages and effects: Multiple groups of assembly mechanisms assemble synchronously, improving the assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automated production equipment for medical devices, and particularly to a blue-hole needle assembly device. Background Art

[0002] The blue-hole needle syringe is an innovative injection device that injects liquid medicine into the body using a high-speed air flow. It has unique advantages such as non-invasive, fast speed, and less pain, and is one of the trends in the development of injection technology. The blue-hole needle syringe generally includes a syringe barrel and a piston push rod that matches it. The syringe barrel is provided with a needle tube inner core, and the piston push rod is provided with a through hole for the needle tube inner core to pass through. During the assembly process, the piston needs to be first installed at the front end of the push rod to form the piston push rod, and then the piston push rod is inserted into the syringe barrel to complete the assembly of the syringe.

[0003] The Chinese invention patent with the application number CN202210411633.6 discloses a syringe assembly system, including a rod body temporary storage device, a moving tray, a piston rod assembly device, a rod body moving device, a piston rod temporary storage device, a syringe barrel temporary storage device, a piston rod moving device, a syringe barrel moving device, and a syringe barrel assembly device; the rod body temporary storage device is used to place the rod body; the moving tray is used to place the rubber piston; the piston rod assembly device is used to assemble the rod body and the rubber piston together; the rod body moving device is used to send the rod body on the rod body temporary storage device to the piston rod assembly device and the piston rod temporary storage device; the piston rod temporary storage device is used to place the piston rod; the syringe barrel temporary storage device is used to place the syringe barrel; the piston rod moving device is used to send the piston rod on the piston rod temporary storage device to the syringe barrel assembly device; the syringe barrel moving device is used to send the syringe barrel on the syringe barrel temporary storage device to the syringe barrel assembly device; the syringe barrel assembly device is used to assemble the piston rod and the syringe barrel together.

[0004] The above syringe assembly system assembles the syringe through multiple devices, reducing the intensity of manual assembly and saving labor costs. However, each device is relatively independent, with only one production line, and the production efficiency is not high. Summary of the Invention

[0005] The purpose of the present invention is to provide a blue-hole needle assembly device, which has the effect of improving production efficiency.

[0006] The above technical object of the present invention is achieved by the following technical solutions: A blue hole needle assembly device, including a workbench, wherein a plurality of groups of assembly mechanisms are arranged along the circumference of the workbench, and the plurality of groups of assembly mechanisms evenly divide the workbench. Each group of assembly mechanisms includes a push rod feeding device, a piston feeding device, a syringe barrel feeding device, and a discharging device arranged in sequence along the circumference of the workbench. The push rod feeding device is connected to the discharging device of the adjacent assembly mechanism. The piston feeding device includes a piston flipping mechanism and a piston moving mechanism. A motor one is fixedly installed on the central axis at the bottom of the workbench. The output shaft of the motor one is fixedly connected to a driving rod. The upper end of the driving rod is fixedly connected to a disc. A plurality of groups of clamping mechanisms are fixedly connected to the disc. A driving mechanism for driving the piston moving mechanism to reciprocate along the central axis of the workbench is provided on the workbench.

[0007] By adopting the above technical solutions, the workbench is octagonal or circular. Taking two groups of assembly mechanisms as an example, the two groups of assembly mechanisms evenly divide the workbench, so each group of assembly mechanisms is 180 degrees. The assembly mechanism includes a push rod feeding device, a piston feeding device, a syringe barrel feeding device, and a discharging device arranged in sequence along the circumference of the workbench. The angle of each device is 45 degrees. The push rod feeding device of one group of assembly mechanisms is adjacent to the discharging device of the other group of assembly mechanisms. There are 8 clamping mechanisms. Taking one group of clamping mechanisms as an example, the clamping mechanism clamps the push rod on the push rod feeding device. The clamping and assembling parts are driven to rotate by the motor one, so that the clamping assembly rotates 45 degrees. While the clamping assembly rotates 45 degrees, the piston feeding device transports the piston to a fixed position. The clamping assembly inserts the push rod into the piston to complete the assembly of the piston. The clamping assembly clamps the piston push rod and rotates 45 degrees to the upper part of the syringe barrel feeding device. The clamping mechanism moves downward and inserts the piston push rod into the syringe barrel to complete the assembly of the blue hole needle syringe. It continues to rotate 45 degrees, so that the clamping assembly clamps the syringe to the upper part of the discharging device, and the clamping assembly is loosened. The syringe is transported to the discharging mechanism for the next operation. The 8 groups of clamping mechanisms can move simultaneously. The clamping mechanism is driven to rotate by the driving rod, and at the same time, the feeding of the piston can be driven to realize the continuous feeding of the device. Multiple assembly lines move synchronously to improve the assembly efficiency.

[0008] The further setting of the present invention is: The driving mechanism includes a gear one fixedly connected to the driving rod. The gear one meshes with a gear two. A rotating shaft is fixedly connected to the central axis of the gear two. The rotating shaft is rotatably connected to the workbench. A groove cam is rotatably connected to the rotating shaft. A crank is fixedly connected to the upper end of the rotating shaft. A square groove is provided on the crank. A slider one is slidably connected to the square groove of the crank. The slider one is slidably connected to the groove cam. A swing rod is hinged to the slider one. A slider two is hinged to the end of the swing rod far from the slider one. A chute for the slider two to reciprocate along the center of the workbench is radially provided on the workbench. The slider is fixedly connected to the piston moving mechanism.

[0009] By adopting the above technical solution, taking two sets of assembly mechanisms as an example, the gear ratio of gear one to gear two is 8:1. When gear one rotates 45 degrees, it drives gear two to rotate 360 degrees. A rotating shaft is fixedly connected in the middle of gear two, and a crank is fixedly connected to the upper end of the rotating shaft. A groove cam is rotatably connected in the middle of the rotating shaft, and the groove cam is fixedly installed on the workbench. The rotation of gear two drives the rotation of the rotating shaft, drives the rotation of the crank. There is a square groove on the crank, and a slider one is slidably connected to the square groove on the crank. The rotation of the crank drives slider one to slide along the square groove on the crank, and at the same time drives slider one to slide along the groove on the groove cam. Slider one drives the swing rod to move, so that slider two moves along the chute. Slider two is fixedly connected to the piston moving mechanism, so that the piston continuously feeds materials. Through the rotation of the clamping mechanism, the piston moving mechanism is driven to continuously feed materials, improving the assembly efficiency.

[0010] The further setting of the present invention is: the clamping mechanism includes a cylinder one fixedly installed on the upper end of the disc, the output shaft of the cylinder one is fixedly connected with a mounting frame, a cylinder two is fixedly installed on the mounting frame, the output shaft of the cylinder two is fixedly installed with a connecting rod, and several groups of clamping components are arranged on the connecting rod. The clamping component includes a connecting piece fixedly installed at the lower end of the connecting rod. The upper end of the connecting piece is a cylinder, the lower end is a cone, and the lower end of the cone is an insertion rod. The insertion rod can be partially inserted into the through hole of the push rod. Two clamping blocks are slidably connected to both sides of the connecting piece, the middle of the clamping block is rotatably connected to the mounting frame, a roller is rotatably connected to the upper end of the clamping block, an arc-shaped groove is arranged on the inner side of the lower end of the clamping block, and a spring one is connected between the upper ends of the two clamping blocks.

[0011] By adopting the above technical solution, in the initial state, due to the pulling force of the spring, the upper ends of the two connecting pieces are close to each other, the middle of the connecting pieces is hinged to the mounting frame, and the lower ends are far from each other. Start cylinder one to make the clamping blocks located on both sides of the push rod. Cylinder two drives the connecting rod to move downward, so that the connecting piece fixedly connected to the connecting rod moves downward. Since the lower end of the connecting piece is an insertion rod, the middle is a cone, and the upper end is a cylinder, when the connecting piece moves downward, the upper ends of the clamping blocks on both sides of the connecting piece move away from each other, and the lower ends move closer to each other. There is an arc-shaped groove on the inner side of the lower end of the connecting piece, and the upper end of the push rod is stuck in the arc-shaped groove of the connecting block to clamp the push rod. At the same time, a part of the insertion rod at the lower end of the connecting piece is inserted into the through hole in the middle of the push rod. The insertion rod on the connecting piece facilitates the centering positioning of the push rod, and the arc-shaped groove on the clamping block facilitates the clamping of the upper end of the push rod. At the same time, when cylinder one drives the whole mounting frame to descend during the installation of the piston and the syringe, the stability of the push rod can be ensured, so that the push rod will not shake in the horizontal and vertical directions, which is beneficial to ensuring the yield of the assembled product.

[0012] A further setting of the present invention is that: the piston flipping mechanism includes a support frame, an arc-shaped baffle is provided on the support frame, a partition plate is provided inside the arc-shaped baffle, the partition plate divides the arc-shaped baffle into several slideways, one end of the support frame is fixedly installed with a second motor, the output shaft of the second motor is fixedly connected with a support shaft, the support shaft is fixedly connected with receiving plates equal in number to the clamping components, one end of the receiving plate away from the support shaft is fixedly connected with a column, the column can pass through the central hole of the piston, one end of the receiving plate away from the support shaft is provided with an inclined piston feed port, the piston feed port is fixedly connected with a horizontally arranged feed plate, one end of the feed plate close to the workbench is provided with an opening for the receiving plate to pass through, and limiting plates are arranged on both sides of the opening.

[0013] By adopting the above technical solution, the vibrating disk aligns the pistons in the same direction, making the pointed surface of the piston face upward and the flat surface face downward. The pistons continuously enter in sequence from the inclined piston feed port and fall onto the horizontally arranged feed plate. Limiting plates are arranged on both sides of the feed plate to fix the position of the pistons. There is an opening at one end of the feed plate close to the workbench. The second motor drives the support shaft to rotate, so that the receiving plate enters from the bottom of the feed plate and is in the same plane as the feed plate. Since the middle of the piston is a hollow structure, during the rotation of the receiving plate, the column on the receiving plate can be inserted into the central hole on the piston. The second motor continues to rotate, causing the receiving plate and the piston to flip 180 degrees together. Since there is an arc-shaped baffle on the support frame and a partition plate on the arc-shaped baffle, the partition plate divides the arc-shaped baffle into slideways matching the number of piston feed ports. The arc-shaped slideways can prevent the centrifugal force acting outward during the rotation of the piston, enabling the piston to fall onto the arc-shaped seat on the piston moving mechanism. The flat surface of the piston faces upward and the pointed surface faces downward, which is beneficial for the lower end of the push rod to be inserted into the piston. Through the arrangement of the limiting plates on the feed plate, the columns on the receiving plate and the arc-shaped baffle, the piston can be stably flipped 180 degrees.

[0014] A further setting of the present invention is as follows: The piston moving mechanism includes a mounting plate fixedly installed on the workbench. A connecting plate is fixedly connected to the second slider. Several groups of moving components are provided on the connecting plate. The moving component includes a concave sleeve slidably connected to the workbench. The bottom of the concave sleeve is a solid structure. A horizontal groove and a vertical groove are provided at the bottom of the sleeve. A cross bar is slidably connected in the horizontal groove. One end of the cross bar penetrates the concave sleeve and the mounting plate and is fixedly connected to the connecting plate. A second spring is sleeved on the cross bar. One end of the second spring is fixedly connected to the mounting plate, and the other end is fixedly connected to the outer wall of the concave sleeve. A vertical rod is slidably connected in the vertical groove. An inclined notch is provided at the lower end of the cross bar. An inclined groove is provided on the vertical rod. The cross bar penetrates the inclined groove and is slidably connected to the vertical rod. A connecting block is provided at the upper end of the vertical rod. A third spring is sleeved on the vertical rod. The upper end of the third spring is fixedly connected to the lower end of the connecting block, and the lower end of the third spring is fixedly connected to the upper surface of the concave part of the concave sleeve. Horizontal support rods are provided at both ends of the bottom of the connecting block. Rotating blocks are hinged at both ends of the support rods. Inclined holes are symmetrically provided on the rotating blocks. Limiting columns are symmetrically provided on the inner side of the concave sleeve. The limiting columns penetrate the inclined holes. Arc-shaped seats are symmetrically provided at the upper ends of the rotating blocks.

[0015] By adopting the above technical solution, in the initial state, the central axis of the piston moving mechanism coincides with the central axis of the clamping mechanism. The driving mechanism drives the second slider to move towards one side of the workbench, causing the cross bar to move towards one side of the workbench. The second spring is compressed. The cross bar is provided with an inclined notch, and the vertical rod is provided with an inclined groove that abuts against the notch. As the cross bar moves, the vertical rod moves downward along the inclined groove, and the connecting block moves downward. The third spring is compressed. As the connecting block moves downward, the support rods move downward, driving the two rotating blocks to move away from each other. The arc-shaped seats at the upper ends of the rotating blocks move away from each other. The piston moves downward due to gravity, away from the upright column on the material receiving plate, and falls between the two arc-shaped seats. The connecting block can support the piston. When the pulling force of the second slider is greater than the elastic force of the second spring, the cross bar drives the concave sleeve to move towards the workbench together, making the central axis of the concave sleeve coincide with the central axis of the clamping mechanism. The material receiving plate can continue to rotate to receive the next piston. By the mutual separation of the two arc-shaped seats, the piston is separated from the material receiving plate, facilitating the continuous feeding of the piston.

[0016] A further setting of the present invention is as follows: The push rod feeding device includes a number of push rod placement grooves provided on the workbench. The number of push rod placement grooves is equal to the number of clamping components. The push rod placement grooves are arranged in a straight line along the circumference. One end of the push rod placement groove is inclined with a push rod feeding port that matches the number of push rod placement grooves. The horizontal position of the push rod feeding port is higher than the horizontal position of the push rod placement groove.

[0017] By adopting the above technical solution, the vibrating disk aligns the push rods in the same direction, making the rod bodies of the push rods face downward and the gripping parts of the push rods face upward. The height of the feed inlet of the push rod is higher than the horizontal height of the push rod placement groove, so that the push rods fall from the inclined push rod feed inlet onto the push rod placement groove. The lower end of the push rod abuts against the workbench, and the upper end of the push rod is in a suspended state, facilitating the clamping mechanism to clamp the gripping part of the push rod. When the clamping mechanism clamps the push rod and moves upward, the push rod is separated from the push rod placement groove, and the push rods on the inclined push rod feed inlet automatically fall into the push rod placement groove, completing the continuous feeding of the push rods.

[0018] A further setting of the present invention is that: the syringe feeding device includes a plurality of syringe placement grooves arranged on the workbench. The number of the syringe placement grooves is equal to the number of the clamping components. The syringe placement grooves are on the same straight line along the circumference. One end of the syringe placement groove is inclined with a syringe feed inlet matching the number of the syringe placement grooves. The horizontal position of the syringe feed inlet is higher than the horizontal position of the syringe placement groove.

[0019] By adopting the above technical solution, the vibrating disk aligns the syringes in the same direction, making the injection parts of the syringes face downward. The height of the syringe feed inlet is higher than the horizontal height of the syringe placement groove, so that the syringes fall from the inclined syringe feed inlet onto the syringe placement groove. The upper end of the syringe abuts against the upper end of the syringe placement groove, and the barrel of the syringe is in a vertically suspended state. When the clamping mechanism clamps the piston push rod and moves downward, the push rod is inserted into the syringe to complete the assembly of the syringe. The clamping mechanism moves upward, clamps the assembled syringe, separates the syringe from the syringe placement groove, and the syringes on the inclined syringe feed inlet automatically fall into the syringe placement groove, completing the continuous feeding of the syringes.

[0020] A further setting of the present invention is that: the discharging device is a discharging plate inclined downward.

[0021] By adopting the above technical solution, after the syringe is assembled, the clamping mechanism is released, and the syringe discharges along the inclined discharging plate.

[0022] The beneficial effects of the present invention are:

[0023] 1. By arranging multiple sets of assembly mechanisms along the circumference of the workbench and synchronously assembling the multiple assembly mechanisms, the assembly efficiency can be improved;

[0024] 2. By the rotation of the drive shaft, the piston feeding devices of multiple sets of assembly mechanisms are simultaneously driven to feed, so that the feeding at each station is uninterrupted. And by the rotation of the drive shaft, the movement of the piston is simultaneously realized, saving energy;

[0025] 3. The insertion rod on the connecting piece facilitates the centering positioning of the push rod, and the arc-shaped groove on the clamping block facilitates the clamping of the upper end of the push rod. During the process of the first cylinder driving the mounting rack to descend as a whole to install the piston and the syringe barrel, the stability of the push rod can be ensured, so that the push rod will not shake in the horizontal and vertical directions, which is beneficial to ensuring the yield rate of the assembled product. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of the present invention.

[0028] Figure 2 It is a schematic plan view of a set of assembly mechanisms of the present invention.

[0029] Figure 3 It is a schematic structural diagram of the clamping mechanism of the present invention.

[0030] Figure 4 It is a schematic cross-sectional structural diagram of the present invention along A-A.

[0031] Figure 5 It is a schematic cross-sectional structural diagram of the present invention along B-B.

[0032] Figure 6 It is a schematic cross-sectional structural diagram of the present invention along C-C.

[0033] Figure 7 It is a schematic cross-sectional structural diagram of the present invention along D-D.

[0034] Figure 8 It is an enlarged structural diagram of the E part of the present invention.

[0035] Figure 9 It is an enlarged structural diagram of the F part of the present invention.

[0036] Figure 10 It is an enlarged structural diagram of the G part of the present invention.

[0037] Figure 11 It is an enlarged structural diagram of the H part of the present invention.

[0038] Figure 12 It is an enlarged structural diagram of the I part of the present invention.

[0039] In the figure, 1 is a workbench; 2 is a clamping mechanism; 21 is a first cylinder; 22 is a mounting bracket; 23 is a second cylinder; 24 is a connecting rod; 25 is a clamping assembly; 251 is a connecting member; 252 is a clamping block; 253 is a roller; 254 is an arc-shaped groove; 255 is a first spring; 3 is a driving mechanism; 31 is a first gear; 32 is a second gear; 33 is a rotating shaft; 34 is a groove cam; 35 is a crank; 36 is a square groove; 37 is a first slider; 38 is a swing rod; 39 is a second slider; 310 is a chute; 4 is a push rod feeding device; 41 is a push rod placement groove; 42 is a push rod feeding port; 5 is a piston feeding device; 51 is a piston flipping mechanism; 511 is a support frame; 512 is an arc-shaped baffle; 513 is a partition; 514 is a second motor; 515 is a support shaft; 516 is a receiving plate; 517 is a column; 518 is a piston feeding port; 519 is a feeding plate; 5110 is an opening; 5111 is a limiting plate; 52 is a piston moving mechanism; 521 is a mounting plate; 522 is a connecting plate; 523 is a concave sleeve; 524 is a horizontal groove; 525 is a vertical groove; 526 is a cross bar; 527 is a second spring; 528 is a vertical rod; 529 is an inclined groove; 5210 is a connecting block; 5211 is a third spring; 5212 is a support rod; 5213 is a rotating block; 5214 is an inclined hole; 5215 is a limiting post; 5216 is an arc-shaped seat; 6 is a syringe feeding device; 61 is a syringe placement groove; 62 is a syringe feeding port; 7 is a discharging device; 71 is a discharging plate; 8 is a first motor; 9 is a driving rod; 10 is a disc. Specific embodiments

[0040] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] Embodiment:

[0042] As Figures 1-12As shown in the figure, a blue hole needle assembly device includes a workbench 1. The workbench 1 is octagonal. There are two groups of assembly mechanisms arranged along the circumference of the workbench 1. The two groups of assembly mechanisms evenly divide the workbench 1, so each group of assembly mechanisms is 180 degrees. Each group of assembly mechanisms includes a push rod feeding device 4, a piston feeding device 5, a syringe feeding device 6, and a discharging device 7 arranged in sequence along the circumference of the workbench 1. The angle of each device is 45 degrees. The push rod feeding device 4 of one group of assembly mechanisms is adjacent to the discharging device 7 of the other group of assembly mechanisms. The piston feeding device 5 includes a piston flipping mechanism 51 and a piston moving mechanism 52. A motor 8 is fixedly installed on the central axis at the bottom of the workbench 1. The output shaft of the motor 8 is fixedly connected to a driving rod 9. The upper end of the driving rod 9 is fixedly connected to a disc 10. There are 8 groups of clamping mechanisms 2 fixedly connected to the disc 10. There is a driving mechanism 3 on the workbench 1 for driving the piston moving mechanism 52 to reciprocate along the central axis direction of the workbench 1.

[0043] As Figure 3 As shown in the figure, the clamping mechanism 2 includes a first cylinder 21 fixedly installed on the upper end of the disc 10. The output shaft of the first cylinder 21 is fixedly connected to a mounting frame 22. A second cylinder 23 is fixedly installed on the mounting frame 22. The output shaft of the second cylinder 23 is fixedly installed with a connecting rod 24. There are 3 groups of clamping components 25 on the connecting rod 24. The clamping component 25 includes a connecting piece 251 fixedly installed at the lower end of the connecting rod 24. The upper end of the connecting piece 251 is a cylinder, the lower end of the cylinder is a cone, and the lower end of the cone is an insertion rod. The insertion rod can be partially inserted into the through hole of the push rod. The two sides of the connecting piece 251 are slidably connected with clamping blocks 252. The middle of the clamping blocks 252 is rotatably connected to the mounting frame 22. The upper end of the clamping blocks 252 is rotatably connected with rollers 253. An arc-shaped groove 254 is arranged on the inner side of the lower end of the clamping blocks 252. A first spring 255 is connected to the upper ends of the two clamping blocks 252.

[0044] In the initial state, due to the pulling force of the spring, the upper ends of the two connecting members 251 of the clamping assembly 25 approach each other. The middle of the connecting members 251 is hinged to the mounting bracket 22, and the lower ends are away from each other. The first cylinder 21 is activated to drive the entire mounting bracket 22 to move downward, so that the clamping blocks 252 are located on both sides of the push rod. The second cylinder 23 drives the connecting rod 24 to move downward, causing the connecting members 251 fixedly connected to the connecting rod 24 to move downward. Since the lower end of the connecting member 251 is a plug rod, the middle is a cone, and the upper end is a cylinder, when the connecting member 251 moves downward, the upper ends of the clamping blocks 252 on both sides of the connecting member 251 move away from each other, and the lower ends approach each other. An arc-shaped groove 254 is provided on the inner side of the lower end of the connecting member 251. The upper end of the push rod is stuck in the arc-shaped groove 254 of the connecting block 5210 to clamp the push rod. At the same time, the plug rod part at the lower end of the connecting member 251 is inserted into the through hole in the middle of the push rod. The plug rod on the connecting member 251 facilitates the centering positioning of the push rod. The arc-shaped groove 254 on the clamping block 252 facilitates the clamping of the upper end of the push rod. At the same time, when the first cylinder 21 drives the entire mounting bracket 22 to descend during the installation of the piston and the syringe barrel, the stability of the push rod can be ensured, so that the push rod does not shake in the horizontal and vertical directions, which is beneficial to ensuring the yield rate of the assembled product.

[0045] As Figure 9 , Figure 11 shown, the driving mechanism 3 includes a first gear 31 fixedly connected to the driving rod 9. The first gear 31 meshes with a second gear 32. The gear ratio of the first gear 31 to the second gear 32 is 8:1. When the first gear 31 rotates 45 degrees, the second gear 32 rotates 360 degrees. A rotating shaft 33 is fixedly connected to the central axis of the second gear 32. The rotating shaft 33 is rotatably connected to the workbench 1. A groove cam 34 is rotatably connected to the rotating shaft 33. A crank 35 is fixedly connected to the upper end of the rotating shaft 33. A square groove 36 is provided on the crank 35. A first slider 37 is slidably connected to the square groove 36 of the crank 35. The first slider 37 is slidably connected to the groove cam 34. A swing rod 38 is hinged to the first slider 37. A second slider 39 is hinged to the end of the swing rod 38 away from the first slider 37. A chute 310 for the second slider 39 to reciprocate along the center of the workbench 1 is radially provided on the workbench 1. The slider is fixedly connected to the piston moving mechanism 52.

[0046] A rotating shaft 33 is fixedly connected to the middle of the second gear 32. A crank 35 is fixedly connected to the upper end of the rotating shaft 33. A groove cam 34 is rotatably connected to the middle of the rotating shaft 33. The groove cam 34 is fixedly installed on the workbench 1. The rotation of the second gear 32 drives the rotation of the rotating shaft 33, which in turn drives the rotation of the crank 35. A square groove 36 is provided on the crank 35. A first slider 37 is slidably connected to the square groove 36 on the crank 35. The rotation of the crank 35 drives the first slider 37 to slide along the square groove 36 on the crank 35 and simultaneously drives the first slider 37 to slide along the groove on the groove cam 34. The first slider 37 drives the swing rod 38 to move, causing the second slider 39 to move along the sliding groove 310. The second slider 39 is fixedly connected to the piston moving mechanism 52, enabling continuous feeding of the piston. Through the rotation of the clamping mechanism 2, the piston moving mechanism 52 is driven to continuously feed, improving the assembly efficiency.

[0047] As Figure 2 , Figure 5 shown, the push rod feeding device 4 includes three push rod placement grooves 41 provided on the workbench 1. The push rod placement grooves 41 are arranged in a straight line circumferentially. One end of the push rod placement groove 41 is inclined with three push rod feeding ports 42. The horizontal position of the push rod feeding ports 42 is higher than the horizontal position of the push rod placement grooves 41.

[0048] The vibrating disk aligns the push rods in the same direction, with the rod bodies of the push rods facing downwards and the gripping parts of the push rods facing upwards, and the push rods are sent out through the three push rod feeding ports 42. The height of the push rod feeding ports 42 is higher than the horizontal height of the push rod placement grooves 41, causing the push rods to fall onto the push rod placement grooves 41 from the inclined push rod feeding ports 42. The lower ends of the push rods are in contact with the workbench 1, and the upper ends of the push rods are in a suspended state, facilitating the clamping mechanism 2 to clamp the gripping parts of the push rods. When the clamping mechanism 2 clamps the push rod and moves upwards, the push rod is separated from the push rod placement groove 41, and the push rods on the inclined push rod feeding ports 42 automatically fall into the push rod placement grooves 41, completing the continuous feeding of the push rods.

[0049] As Figure 7 , Figure 8 , Figure 10As shown, the piston flipping mechanism 51 includes a support frame 511. An arc-shaped baffle 512 is provided on the support frame 511. A partition plate 513 is provided inside the arc-shaped baffle 512. The partition plate 513 divides the arc-shaped baffle 512 into three slideways. One end of the support frame 511 is fixedly installed with a second motor 514. The output shaft of the second motor 514 is fixedly connected with a support shaft 515. A receiving plate 516 equal in number to the clamping assembly 25 is fixedly connected to the support shaft 515. One end of the receiving plate 516 away from the support shaft 515 is fixedly connected with a column 517. The column 517 can pass through the central hole of the piston. An inclined piston feed port 518 is provided at one end of the receiving plate 516 away from the support shaft 515. The piston feed port 518 is fixedly connected with a horizontally arranged feed plate 519. An opening 5110 for the receiving plate 516 to pass through is provided at one end of the feed plate 519 close to the workbench 1. Limit plates 5111 are provided on both sides of the opening 5110.

[0050] The vibrating disk aligns the pistons in the same direction, with the pointed surface of the piston facing up and the flat surface facing down. The pistons continuously enter through the inclined piston feed port 518 in sequence and fall onto the horizontally arranged feed plate 519. Limit plates 5111 are provided on both sides of the feed plate 519 to fix the position of the pistons. There is an opening 5110 at one end of the feed plate 519 close to the workbench 1. The second motor 514 drives the support shaft 515 to rotate, causing the receiving plate 516 to enter from the bottom of the feed plate 519 and be in the same plane as the feed plate 519. Since the middle of the piston is a hollow structure, during the rotation of the receiving plate 516, the column 517 on the receiving plate 516 can be inserted into the central hole on the piston. The second motor 514 continues to rotate, causing the receiving plate 516 and the piston to flip 180 degrees together. Since an arc-shaped baffle 512 is provided on the support frame 511 and a partition plate 513 is provided on the arc-shaped baffle 512, the partition plate 513 divides the arc-shaped baffle 512 into slideways matching the number of piston feed ports 518. The arc-shaped slideways can prevent the outward centrifugal force during the rotation of the piston, causing the piston to fall onto the arc-shaped seat 5216 on the piston moving mechanism 52, with the flat surface of the piston facing up and the pointed surface facing down, which is beneficial for the lower end of the push rod to insert into the piston. Through the settings of the limit plates 5111 on the feed plate 519, the column 517 on the receiving plate 516, and the arc-shaped baffle 512, the piston can be stably flipped 180 degrees.

[0051] As Figure 10 、 Figure 12As shown in the figure, the piston moving mechanism 52 includes a mounting plate 521 fixedly installed on the workbench 1. A connecting plate 522 is fixedly connected to the slider two 39. There are 3 sets of moving components on the connecting plate 522. The moving component includes a concave sleeve 523 slidably connected to the workbench 1. The bottom of the concave sleeve 523 is a solid structure. There are a horizontal groove 524 and a vertical groove 525 at the bottom of the sleeve. A cross bar 526 is slidably connected in the horizontal groove 524. One end of the cross bar 526 passes through the concave sleeve 523 and the mounting plate 521 and is fixedly connected to the connecting plate 522. A second spring 527 is sleeved on the cross bar 526. One end of the second spring 527 is fixedly connected to the mounting plate 521, and the other end is fixedly connected to the outer wall of the concave sleeve 523. A vertical rod 528 is slidably connected in the vertical groove 525. There is an inclined notch at the lower end of the cross bar 526. There is an inclined groove 529 on the vertical rod 528. The cross bar 526 passes through the inclined groove 529 and is slidably connected to the vertical rod 528. A connecting block 5210 is provided at the upper end of the vertical rod 528. A third spring 5211 is sleeved on the vertical rod 528. The upper end of the third spring 5211 is fixedly connected to the lower end of the connecting block 5210, and the lower end of the third spring 5211 is fixedly connected to the upper surface of the concave part of the concave sleeve 523. At both ends of the bottom of the connecting block 5210, there are horizontal support rods 5212. Rotating blocks 5213 are hinged at both ends of the support rods 5212. Inclined holes 5214 are symmetrically provided on the rotating blocks 5213. Limiting columns 5215 are symmetrically provided inside the concave sleeve 523. The limiting columns 5215 pass through the inclined holes 5214. Arc-shaped seats 5216 are symmetrically provided at the upper ends of the rotating blocks 5213.

[0052] In the initial state, the central axis of the piston moving mechanism 52 coincides with the central axis of the clamping mechanism 2. The driving mechanism 3 drives the slider two 39 to move towards one side of the workbench 1, causing the cross bar 526 to move towards one side of the workbench 1. The second spring 527 is compressed. There is an inclined notch on the cross bar 526, and there is an inclined groove 529 on the vertical rod 528 that is in contact with the notch. When the cross bar 526 moves, the vertical rod 528 moves downward along the inclined groove 529. The connecting block 5210 moves downward, and the third spring 5211 is compressed. When the connecting block 5210 moves downward, the support rods 5212 move downward, driving the two rotating blocks 5213 to move away from each other. The arc-shaped seats 5216 at the upper ends of the rotating blocks 5213 move away from each other. The piston moves downward due to gravity, away from the column 517 on the material receiving plate 516, and falls between the two arc-shaped seats 5216. The connecting block 5210 can support the piston. When the pulling force of the slider two 39 is greater than the elastic force of the second spring 527, the cross bar 526 drives the concave sleeve 523 to move towards the workbench 1 together, making the central axis of the concave sleeve 523 coincide with the central axis of the clamping mechanism 2. The material receiving plate 516 can continue to rotate to receive the next piston. By the mutual separation of the two arc-shaped seats 5216, the piston is separated from the material receiving plate 516, facilitating the continuous feeding of the piston.

[0053] As Figure 6As shown, the syringe feeding device 6 includes three syringe placing grooves 61 arranged on the workbench 1, the number of the syringe placing grooves 61 is equal to the number of the clamping assemblies 25, the syringe placing grooves 61 are on the same straight line along the circumferential direction, and one end of the syringe placing groove 61 is inclined to be provided with a syringe feeding port 62 matching the number of the syringe placing grooves 61, and the horizontal position of the syringe feeding port 62 is higher than the horizontal position of the syringe placing groove 61.

[0054] The vibration disk unifies the direction of the syringe so that the injection part of the syringe faces downward, and the height of the syringe feed port 62 is higher than the horizontal height of the syringe placement slot 61, so that the syringe falls from the inclined syringe feed port 62 into the syringe placement slot 61, and the upper end of the syringe contacts the upper end of the syringe placement slot 61, and the barrel of the syringe is in a vertically suspended state. When the clamping mechanism 2 clamps the piston push rod and moves downward, the push rod is inserted into the syringe to complete the assembly of the syringe. The clamping mechanism 2 moves upward to clamp the assembled syringe to keep the syringe away from the syringe placement slot 61, and the syringe on the inclined syringe feed port 62 automatically falls into the syringe placement slot 61 to complete the continuous feeding of the syringe.

[0055] The discharge device 7 is a discharge plate 71 arranged obliquely downward. After the syringe is assembled, the clamping mechanism 2 is released to discharge the syringe along the oblique discharge plate 71 .

[0056] Working principle of the present invention:

[0057] Taking a group of assembly mechanisms, each group of clamping mechanisms 2 is provided with three clamping assemblies 25 as an example, the vibration plate unifies the direction of the push rods, so that the push rod body faces downward, the gripping part of the push rod faces upward, and is sent out through three push rod feed ports 42 (existing technology). The height of the push rod feed port 42 is higher than the horizontal height of the push rod placement groove 41, so that the push rod falls from the inclined push rod feed port 42 into the push rod placement groove 41, the lower end of the push rod conflicts with the workbench 1, and the upper end of the push rod is in a suspended state.

[0058] The vibration disk unifies the direction of the syringe so that the injection part of the syringe faces downward, and is sent out through three syringe feed ports 62 (existing technology). The height of the syringe feed port 62 is higher than the horizontal height of the syringe placement groove 61, so that the syringe falls from the inclined syringe feed port 62 into the syringe placement groove 61, and the upper end of the syringe is in conflict with the upper end of the syringe placement groove 61, and the barrel of the syringe is in a vertically suspended state.

[0059] The vibration plate unifies the direction of the piston so that the pointed side of the piston faces upward and the flat side faces downward (existing technology). The pistons enter in sequence from the inclined piston feed port 518 and fall onto the horizontally arranged feed plate 519. Limiting plates 5111 are provided on both sides of the feed plate 519 to fix the position of the piston.

[0060] In the initial state, due to the pulling force of the spring, the upper ends of the two connecting members 251 of the clamping assembly 25 approach each other. The middle of the connecting member 251 is hinged to the mounting bracket 22, and the lower ends are away from each other. The first cylinder 21 is activated to drive the entire mounting bracket 22 to move downward, so that the clamping blocks 252 are located on both sides of the push rod. The second cylinder 23 drives the connecting rod 24 to move downward, causing the connecting member 251 fixedly connected to the connecting rod 24 to move downward. Since the lower end of the connecting member 251 is a plug, the middle is a cone, and the upper end is a cylinder, when the connecting member 251 moves downward, the upper ends of the clamping blocks 252 on both sides of the connecting member 251 move away from each other, and the lower ends approach each other. An arc-shaped groove 254 is provided on the inner side of the lower end of the connecting member 251. The upper end of the push rod is stuck in the arc-shaped groove 254 of the connecting block 5210 to clamp the push rod. The plug portion at the lower end of the connecting member 251 is inserted into the through hole in the middle of the push rod, and the plug on the connecting member 251 facilitates centering the push rod. The arc-shaped groove 254 on the clamping block 252 facilitates clamping the upper end of the push rod.

[0061] The first cylinder 21 drives the entire mounting bracket 22 to move upward. At this time, the clamping mechanism 2 clamps the push rod above the push rod placement groove 41.

[0062] Motor 1 drives the drive rod 9 to rotate 45 degrees, causing the disc 10 to rotate 45 degrees, the clamping assembly on the disc 10 to rotate 45 degrees, and the first gear 31 fixedly connected to the drive rod 9 to rotate 45 degrees. The second gear 32 meshing with the first gear 31 rotates 360 degrees. When the second gear 32 rotates 360 degrees, initially, the crank 35 is close to the center side of the workbench 1, the first slider 37 is located on the center side of the groove cam 34 close to the workbench 1, and the concave sleeve 523 is located below the clamping assembly 25 and collinear with the central axis of the clamping assembly 25. During the process of the second gear 32 rotating 360 degrees, the drive shaft 33 rotates, and the crank 35 fixedly connected to the shaft 33 first rotates 180 degrees. There is a square groove 36 on the crank 35, and the first slider 37 is slidably connected to the square groove 36 on the crank 35. The rotation of the crank 35 drives the first slider 37 to slide along the square groove 36 on the crank 35, and at the same time drives the first slider 37 to slide along the groove on the groove cam 34. The first slider 37 drives the swing rod 38 to move, causing the second slider 39 to move away from the workbench 1 along the chute 310. The second slider 39 is fixedly connected to the connecting plate 522, and the connecting plate 522 drives the cross bar 526 to move away from the workbench 1, driving the concave sleeve 523 to move towards the piston feed port 518. When the thrust of the second slider 39 is greater than the force of the second spring 527, the cross bar 526 continues to move towards the concave sleeve 523, the vertical rod 528 moves upward, the connecting block 5210 moves upward, the support rod 5212 moves upward, driving the two rotating blocks 5213 to approach each other, and the arc seats 5216 at the upper ends of the rotating blocks 5213 approach each other. Start the second motor 514, drive the support shaft 515 to rotate, so that the receiving plate 516 enters from the bottom of the feeding plate 519 and is in the same plane as the feeding plate 519. Since the middle of the piston is a hollow structure, during the rotation of the receiving plate 516, the upright column 517 on the receiving plate 516 can be inserted into the central hole on the piston. The second motor 514 continues to rotate, causing the receiving plate 516 and the piston to flip 180 degrees together. Since there is an arc-shaped baffle 512 on the support frame 511, and there is a partition 513 on the arc-shaped baffle 512, the partition 513 divides the arc-shaped baffle 512 into slideways matching the number of piston feed ports 518. The arc-shaped slideway can prevent the centrifugal force outward during the rotation of the piston, causing the piston to fall onto the arc seat 5216 on the piston moving mechanism 52. The shaft 33 drives the crank 35 to continue rotating 180 degrees, driving the first slider 37 to slide towards the center of the workbench 1 along the square groove 36 on the crank 35. The second slider 39 moves towards the workbench 1 along the chute 310, driving the cross bar 526 to move towards the workbench 1, compressing the second spring 527. There is an inclined notch on the cross bar 526, and there is an inclined groove 529 on the vertical rod 528 that is in contact with the notch. The movement of the cross bar 526 causes the vertical rod 528 to move downward along the inclined groove 529, the connecting block 5210 moves downward, compressing the third spring 5211. The downward movement of the connecting block 5210 causes the support rod 5212 to move downward, driving the two rotating blocks 5213 to move away from each other.The arc-shaped seats 5216 at the upper ends of the rotating blocks 5213 move away from each other. Due to gravity, the piston moves downward. The piston moves away from the upright posts 517 on the material receiving plate 516 and falls between the two arc-shaped seats 5216. The connecting block 5210 can support the piston. When the pulling force of the second slider 39 is greater than the elastic force of the second spring 527, the cross bar 526 drives the concave sleeve 523 to move towards the workbench 1 together, making the central axis of the concave sleeve 523 coincide with the central axis of the clamping mechanism 2.,

[0063] The first cylinder 21 drives the entire mounting bracket 22 to move downward. The push rod is inserted into the piston. The clamping mechanism 2 clamps the piston and the push rod. The first cylinder 21 drives the entire mounting bracket 22 to move upward. The first motor 8 drives the clamping mechanism 2 to rotate 45 degrees and move above the syringe placement groove 61. The first cylinder 21 drives the entire mounting bracket 22 to move downward. The piston push rod is inserted into the syringe, completing the assembly of the syringe. The first cylinder 21 drives the entire mounting bracket 22 to move upward, moving the syringe away from the syringe placement groove 61. The first motor 8 drives the clamping mechanism 2 to rotate 45 degrees and move above the discharging device 7. The second cylinder 23 drives the connecting rod 24 to move upward, causing the connecting piece 251 fixedly connected to the connecting rod 24 to move upward. The upper ends of the clamping blocks 252 on both sides of the connecting piece 251 approach each other, and the lower ends move away from each other, releasing the syringe. The syringe discharges through the inclined discharging plate 71, completing the assembly.

Claims

1. A blue hole needle assembly device, comprising a workbench (1), characterized in that: The workbench (1) is provided with several groups of assembly mechanisms along the circumferential direction. The several groups of assembly mechanisms evenly divide the workbench (1). Each group of assembly mechanisms includes a push rod feeding device (4), a piston feeding device (5), a syringe feeding device (6), and a discharging device (7) that are sequentially arranged along the circumferential direction of the workbench (1). The push rod feeding device (4) is connected to the discharging device (7) of the adjacent assembly mechanism. The piston feeding device (5) includes a piston flipping mechanism (51) and a piston moving mechanism (52). A first motor (8) is fixedly installed on the central axis of the bottom of the workbench (1). The output shaft of the first motor (8) is fixedly connected to a driving rod (9). The upper end of the driving rod (9) is fixedly connected to a disc (10). Several groups of clamping mechanisms (2) are fixedly connected to the disc (10). A driving mechanism (3) for driving the piston moving mechanism (52) to perform reciprocating motion along the central axis direction of the workbench (1) is provided on the workbench (1); The driving mechanism (3) includes a first gear (31) fixedly connected to the driving rod (9). The first gear (31) meshes with a second gear (32). A rotating shaft (33) is fixedly connected to the central axis of the second gear (32). The rotating shaft (33) is rotatably connected to the workbench (1). A groove cam (34) is rotatably connected to the rotating shaft (33). A crank (35) is fixedly connected to the upper end of the rotating shaft (33). A square groove (36) is provided on the crank (35). A first slider (37) is slidably connected to the square groove (36) of the crank (35). The first slider (37) is slidably connected to the groove cam (34). A swing rod (38) is hinged to the first slider (37). A second slider (39) is hinged to the end of the swing rod (38) far from the first slider (37). A sliding groove (310) for the second slider (39) to perform reciprocating motion along the center of the workbench (1) is radially provided on the workbench (1). The slider is fixedly connected to the piston moving mechanism (52); The clamping mechanism (2) includes a first cylinder (21) fixedly installed at the upper end of the disc (10). The output shaft of the first cylinder (21) is fixedly connected to a mounting bracket (22). A second cylinder (23) is fixedly installed on the mounting bracket (22). The output shaft of the second cylinder (23) is fixedly installed with a connecting rod (24). A plurality of groups of clamping components (25) are provided on the connecting rod (24). The clamping component (25) includes a connecting piece (251) fixedly installed at the lower end of the connecting rod (24). The upper end of the connecting piece (251) is a cylinder, the lower end of the cylinder is a cone, and the lower end of the cone is a plug rod. The plug rod can be partially inserted into the through hole of the push rod. Clamping blocks (252) are slidably connected to both sides of the connecting piece (251). The middle of the clamping blocks (252) is rotatably connected to the mounting bracket (22). The upper ends of the clamping blocks (252) are rotatably connected with rollers (253). An arc-shaped groove (254) is provided on the inner side of the lower end of the clamping blocks (252). A first spring (255) is connected to the upper ends of the two clamping blocks (252); The piston moving mechanism (52) includes a mounting plate (521) fixedly installed on the workbench (1). A connecting plate (522) is fixedly connected to the second slider (39). A plurality of groups of moving components are provided on the connecting plate (522). Each moving component includes a concave sleeve (523) slidably connected to the workbench (1). The bottom of the concave sleeve (523) is a solid structure. A horizontal groove (524) and a vertical groove (525) are provided at the bottom of the sleeve. A cross bar (526) is slidably connected in the horizontal groove (524). One end of the cross bar (526) passes through the concave sleeve (523) and the mounting plate (521) and is fixedly connected to the connecting plate (522). A second spring (527) is sleeved on the cross bar (526). One end of the second spring (527) is fixedly connected to the mounting plate (521), and the other end is fixedly connected to the outer wall of the concave sleeve (523). A vertical rod (528) is slidably connected in the vertical groove (525). An inclined notch is provided at the lower end of the cross bar (526). An inclined groove (529) is provided on the vertical rod (528). The cross bar (526) passes through the inclined groove (529) and is slidably connected to the vertical rod (528). A connecting block (5210) is provided at the upper end of the vertical rod (528). A third spring (5211) is sleeved on the vertical rod (528). The upper end of the third spring (5211) is fixedly connected to the lower end of the connecting block (5210), and the lower end of the third spring (5211) is fixedly connected to the upper surface of the recessed part of the concave sleeve (523). Support rods (5212) are horizontally provided at both ends of the bottom of the connecting block (5210). Rotating blocks (5213) are hinged to both ends of the support rods (5212). Inclined holes (5214) are symmetrically provided on the rotating blocks (5213). Limiting columns (5215) are symmetrically provided inside the concave sleeve (523). The limiting columns (5215) pass through the inclined holes (5214). Arc-shaped seats (5216) are symmetrically provided at the upper ends of the rotating blocks (5213).

2. The blue hole needle assembly device according to claim 1, characterized in that: The piston flipping mechanism (51) includes a support frame (511). An arc-shaped baffle (512) is provided on the support frame (511). A partition plate (513) is arranged inside the arc-shaped baffle (512). The partition plate (513) divides the arc-shaped baffle (512) into several slideways. One end of the support frame (511) is fixedly installed with a second motor (514). The output shaft of the second motor (514) is fixedly connected with a support shaft (515). A receiving plate (516) equal in number to the clamping assembly (25) is fixedly connected to the support shaft (515). One end of the receiving plate (516) far from the support shaft (515) is fixedly connected with a column (517). The column (517) can pass through the central hole of the piston. One end of the receiving plate (516) far from the support shaft (515) is provided with an inclined piston feed inlet (518). The piston feed inlet (518) is fixedly connected with a horizontally arranged feed plate (519). One end of the feed plate (519) close to the workbench (1) is provided with an opening (5110) for the receiving plate (516) to pass through. Limit plates (5111) are arranged on both sides of the opening (5110).

3. The blue hole needle assembly device according to claim 1, characterized in that: The push rod feeding device (4) includes a number of push rod placement grooves (41) arranged on the workbench (1). The number of the push rod placement grooves (41) is equal to the number of the clamping assemblies (25). The push rod placement grooves (41) are in the same straight line along the circumferential direction. One end of the push rod placement groove (41) is inclined and provided with a push rod feed inlet (42) matching the number of the push rod placement grooves (41). The horizontal position of the push rod feed inlet (42) is higher than the horizontal position of the push rod placement groove (41).

4. The blue hole needle assembly device according to claim 1, characterized in that: The syringe feeding device (6) includes a number of syringe placement grooves (61) arranged on the workbench (1). The number of the syringe placement grooves (61) is equal to the number of the clamping assemblies (25). The syringe placement grooves (61) are in the same straight line along the circumferential direction. One end of the syringe placement groove (61) is inclined and provided with a syringe feed inlet (62) matching the number of the syringe placement grooves (61). The horizontal position of the syringe feed inlet (62) is higher than the horizontal position of the syringe placement groove (61).

5. The blue hole needle assembly device according to claim 1, characterized in that: The discharging device (7) is a discharging plate (71) inclined downward.

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