Automatic assembling device and method for inlaid injection needle

Abstract

The invention relates to an automatic assembling device for an embedded injection needle. The automatic assembling device comprises a needle tube and needle seat assembling device and a sheath assembling device, the needle tube and needle seat assembling device at least comprises a driving mechanism, a first conveying line, a needle seat feeding mechanism, a needle tube feeding mechanism and a press fitting mechanism, wherein the needle seat feeding mechanism, the needle tube feeding mechanism and the press fitting mechanism are sequentially arranged in the conveying direction of the first conveying line. The sheath assembling device at least comprises a second conveying line, a sheath feeding mechanism, a sheath press-fitting mechanism and a discharging mechanism, wherein the sheath feeding mechanism, the sheath press-fitting mechanism and the discharging mechanism are sequentially arranged in the conveying direction of the second conveying line. The automatic assembling machine further comprises a shifting mechanism, and the shifting mechanism is arranged between the needle tube and needle seat assembling device and the sheath assembling device and used for shifting riveted needle heads into the second rotary assembling mechanism from the first carrier. And the controller is used for receiving feedback information and sending an action instruction to the prime mover and the working machine or the executing mechanism.

Description

Technical Field

[0001] This invention relates to the field of injection needle manufacturing technology, and in particular to an automatic assembly device and method for embedding injection needles. Background Technology

[0002] The assembly of embedded injection needles or aluminum-base injection needles is generally done manually, which is inefficient and the needle can easily cause injury. Although there are occasional automated assembly devices, none of them can automatically assemble the sheath. Furthermore, an existing type of inlaid injection needle includes a needle hub, a needle tube, and a sheath. The needle hub is a conical shell with a snap-fit ​​ridge on the outer surface of the middle part of the needle hub. The inner side wall of the sheath has a snap-fit ​​groove that matches the snap-fit ​​ridge. The sheath is fitted with the snap-fit ​​ridge on the needle hub through the snap-fit ​​groove, so that the sheath is installed on the needle hub to protect the needle tube. During the assembly process, the snap-fit ​​groove on the sheath and the snap-fit ​​ridge on the needle hub cannot be aligned, resulting in assembly failure. Summary of the Invention

[0003] The purpose of this invention is to overcome the deficiencies in the prior art and provide an automatic assembly device and assembly method for embedding injection needles.

[0004] To achieve the above objectives, the technical solution of the present invention is to design an automatic assembly device for embedding injection needles, comprising: a needle tube and needle hub assembly device and a sheath assembly device. The needle tube and needle hub assembly device includes at least a drive mechanism, a first conveyor line, and a needle hub feeding mechanism, a needle tube feeding mechanism, and a pressing mechanism arranged sequentially along the transmission direction of the first conveyor line. The first conveyor line is provided with several sets of first carriers, which are evenly arranged on the first conveyor line to transfer the needle seat according to the needle seat and needle tube riveting steps; The needle holder feeding mechanism installs the needle holder onto the first carrier; The needle feeding mechanism assembles the needle onto the needle holder; The pressing mechanism rivets the needle hub to the needle tube; The sheath assembly device includes at least a second conveyor line and a sheath feeding mechanism, a sheath pressing mechanism, and a discharging mechanism arranged sequentially along the transmission direction of the second conveyor line. The second conveyor line is equipped with several sets of second carriers, which are evenly arranged on the second conveyor line to transfer the needles according to the assembly steps of the needles and caps; The sheath feeding mechanism installs the sheath onto the needle head; The sheath pressing mechanism presses the sheath onto the needle; The feeding mechanism removes the assembled injection needle from the second carrier; It also includes a shifting mechanism, which is disposed between the needle tube and needle hub assembly device and the sheath assembly device, for moving the riveted needle from the first carrier to the second rotary assembly mechanism; It also includes a controller that receives feedback information and issues action commands to the prime mover and the working machine or actuator.

[0005] In a further preferred embodiment, the driving mechanism includes a drive motor and a reducer. The output shaft of the drive motor is connected to the input end of the reducer. The output end of the reducer is connected to a drive shaft via a first transmission chain. The drive shaft is connected to the input end of a first conveyor chain via a second transmission chain. The output end of the first indexer is connected to a first conveyor line. The drive shaft is connected to the input end of a second indexer via a third transmission chain. The output end of the second indexer is connected to a second conveyor line.

[0006] A further preferred technical solution includes a silicone oil application mechanism below the shifting mechanism. The silicone oil application mechanism includes an indexer, with a pulley at the input end of the indexer. A drive motor is located on one side of the indexer, with a pulley on the output shaft of the drive motor and a transmission belt on the two pulleys. A power rotor is installed at the output end of the indexer. The power rotor has at least four platforms arranged in a ring around an axis. Each platform has a guide rail arranged parallel to the axis. A slider is provided on the guide rail. A locking plate is provided on the side of the slider away from the power rotor. Several equally spaced slots are opened on a side parallel to the axis on the locking plate. Each slot includes at least a first opening on the side and a first latch connected to the first opening. A silicone oil application carrier is provided on the platform below each slot. The needle is placed on the upper silicone oil carrier through a shifting mechanism, and a shifting claw cylinder is also provided between the two sets of shifting finger cylinders of the shifting mechanism; Each slider is provided with a push rod on the side near the indexer. In the vertical direction, a bearing is provided on the highest position of the flange of the indexer corresponding to the push rod. During the rotation, the push rod makes rotational contact with the outer surface of the bearing. A return spring is provided on the platform at the lower end of each slider. One end of the return spring is connected to the slider, and the other end is fixed on the platform.

[0007] A further preferred technical solution is that an oil tank support is provided below the power rotor, an oil tank guide rail is provided on the oil tank support, an oil tank slider is provided on the oil tank guide rail, a lifting oil tank is provided on the oil tank slider, an oil tank motor is provided on one side of the lifting oil tank, and a rocker arm is provided on the drive shaft of the oil tank motor, and the rocker arm is hinged to the oil tank slider.

[0008] A further preferred technical solution is that a transition transmission mechanism is provided on one side of the shifting mechanism near the needle tube and needle seat assembly device. The transition transmission mechanism includes a pair of transmission pulleys connected by a transmission belt. The transmission belt is provided with a plurality of transition transmission guide rails. Each transition transmission guide rail is provided with a transition transmission slider. Each transition transmission slider is provided with a protruding column on the side away from the transition transmission guide rail. A first carrier is also provided on the upper side of each transition transmission slider. It also includes a drive cylinder, the piston rod of which extends below the column, and the end of the piston rod is provided with a push plate, which can push several of the columns at once to make the transition transfer slider rise along the transition transfer guide rail.

[0009] In a further preferred embodiment, a gripping mechanism is provided between the transition transfer mechanism and the first conveyor line. The gripping mechanism includes a gripping bracket, a gripping cross plate, a horizontal gripping guide rail, a gripping slider, a gripping shift plate, a gripping cylinder parallel to the gripping guide rail, a piston rod connected to the gripping shift plate, a vertically arranged gripping lifting guide rail, a slidably fitted gripping cylinder support, a gripping finger cylinder on the gripping cylinder support, and a gripping lifting cylinder on the gripping shift plate at the upper end of the gripping lifting guide rail. The piston rod of the gripping lifting cylinder is connected to the gripping cylinder support via a hinge.

[0010] In a further preferred embodiment, the sheath assembly device further includes a defect detection mechanism, which is located on one side of the second conveyor line above the sheath feeding mechanism.

[0011] In a further preferred embodiment, the defect detection mechanism includes a defect detection bracket, a vertical first defect detection guide rail on the defect detection bracket, a first defect detection slider on the first defect detection guide rail, a defect detection upright plate on the first defect detection slider, a horizontal second defect detection guide rail on the defect detection upright plate, a second defect detection slider on the second defect detection guide rail, a camera support on the second defect detection slider, a camera mounted at the lower end of the camera support, a rack at the upper end of the camera support, a horizontally positioned defect detection variable frequency motor on the defect detection bracket corresponding to the position of the defect detection upright plate, the main shaft of the defect detection variable frequency motor passing through the defect detection upright plate, and a gear on the main shaft meshing with the rack. On the defect detection bracket on the vertical side of the defect detection stand plate near the defect detection support, a vertically arranged defect detection screw is also provided. The two ends of the defect detection screw are mounted on the defect detection support through bearing seats. A defect detection nut sleeve is provided on the defect detection screw. The defect detection nut sleeve is fixedly connected to the first defect detection slider. The defect detection bracket below the camera is also equipped with a lens that works in conjunction with the camera.

[0012] A further preferred technical solution is that the needle feeding mechanism includes a needle support, a needle support plate on the needle support, and a needle material groove on the needle support plate. The needle material groove is W-shaped, and a needle roller is provided at each of the two bottoms of the W-shaped needle material groove. A variable frequency motor is provided on the needle support plate corresponding to the end of each needle roller away from the center of the rotary table. Each variable frequency motor is connected to one end of the corresponding needle roller through a set of transmission gears. A set of annularly arranged grooves is provided on the outer circumferential surface of both needle rollers to accommodate needles. The needle tube support plate is provided with through grooves corresponding to the two rollers. A hinged needle tube baffle is provided in the through groove. A first needle tube cylinder is provided on the outside of the needle tube support plate. The piston rod of the first needle tube cylinder extends from the outside of the through groove into the through groove and is hinged to the needle tube baffle. A needle tube guide plate is provided at the bottom of the through groove. The needle tube guide plate has a wedge-shaped guide side. The guide side and an inner side of the through groove form a wedge-shaped needle tube guide groove. The outlet of the needle tube guide groove is connected to the through hole of the upper connecting plate corresponding to the third needle tube guide pressing mechanism.

[0013] In a further preferred embodiment, the sheath pressing mechanism includes a sheath pressing bracket, on which a vertically arranged sheath pressing cylinder is provided. A set of sheath pressing plates is provided on the piston rod of the sheath pressing cylinder, and a set of vertically downward-arranged sheath pressing holes are provided on the sheath pressing plates. The sheath pressing holes can be fitted onto the end of the sheath. The sheath pressing bracket is also equipped with a pair of first positioning cylinders and second positioning cylinders. A positioning clamp is connected to the piston rod of the first positioning cylinder. The positioning clamp is provided with a set of V-shaped grooves with openings facing the second conveyor line. A positioning clamp is connected to the piston rod of the second positioning cylinder. The positioning clamp is provided with a set of V-shaped grooves with openings facing the sheath feeding mechanism. On the sheath pressing bracket corresponding to the lower end of the sheath, there is also a sheath driving cylinder arranged in the opposite direction of the second conveying line. The piston rod of the sheath driving cylinder is provided with a sheath side pressure bracket. The sheath side pressure bracket is provided with a sheath side pressure cylinder arranged in the radial direction of the second conveying line. The piston rod of the sheath side pressure cylinder is provided with a side pressure plate. The side pressure plate is provided with a layer of resin material.

[0014] An automated assembly method for an embedded injection needle includes the following steps: applying the automated assembly device for the embedded injection needle to the automated assembly method for the embedded injection needle: S1: The needle holder is installed on the first carrier through the needle holder feeding mechanism and rotated and transferred through the first rotary table; S2: Install the needle tube onto the needle holder via the needle tube feeding mechanism; S3: The needle tube and the needle seat are riveted together on a first carrier having the needle tube and the needle seat by a pressing mechanism; S4: Remove the riveted needle from the first carrier of the first rotary table and install it on the second carrier of the second rotary table, and then rotate and transfer the needle through the second rotary table.

[0015] S5: Install the sheath onto the needle head using the sheath feeding mechanism. S6: The sheath is assembled on the needle head to form an injection needle by a sheath pressing mechanism.

[0016] S7: The injection needle is moved from the second carrier to the receiving hopper by the feeding mechanism.

[0017] The advantages and beneficial effects of the present invention are as follows: An inlay injection needle assembly device, which realizes the automatic assembly of inlay injection needles through a needle tube and needle seat assembly device and a sheath assembly device and a shifting mechanism between them. The needle tube and needle seat assembly device is used for riveting the needle tube and the needle seat. After riveting, the needle tip is moved to the sheath assembly device through the shifting mechanism and is assembled with the sheath in sequence in the sheath assembly device. The device realizes the functions of automatic loading and unloading and assembly, avoiding the tedious manual operation of manual loading and unloading, and also avoiding the risk of injury during manual loading. This assembly machine achieves automatic assembly of embedded injection needles through a needle tube and needle seat assembly device, a sheath assembly device, and a shifting mechanism between the needle tube and needle seat assembly device and the sheath assembly device. This optimizes the assembly process of embedded injection needles, makes the structure of the embedded injection needle assembly machine more optimized, reduces the failure rate of the embedded injection needle assembly machine, and improves the assembly efficiency of embedded injection needles. Attached Figure Description

[0018] Figure 1 This is one of the isometric views of the present invention; Figure 2 This is the second isometric drawing of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is one of the isometric views of the needle feeding mechanism of the present invention; Figure 5This is the second isometric view of the needle feeding mechanism of the present invention; Figure 6 This is one of the isometric views of another embodiment of the needle feeding mechanism of the present invention; Figure 7 This is a second isometric view of another embodiment of the needle feeding mechanism of the present invention; Figure 8 This is an isometric view of the transition transmission mechanism of the present invention; Figure 9 This is one of the isometric views of the shifting mechanism and gripping mechanism of the present invention; Figure 10 This is the second isometric view of the shifting mechanism and gripping mechanism of the present invention; Figure 11 This is one of the isometric views of the sheath feeding mechanism of the present invention; Figure 12 This is the second isometric view of the sheath feeding mechanism of the present invention; Figure 13 This is the third isometric view of the sheath feeding mechanism of the present invention; Figure 14 This is one of the isometric views of the sheath pressing mechanism of the present invention; Figure 15 This is the second isometric view of the sheath pressing mechanism of the present invention; Figure 16 This is an isometric view of the silicone oil mechanism of the present invention; Figure 17 This is an isometric view of the silicone oil tank mechanism of the present invention; Figure 18 This is an isometric view of the press-fitting mechanism of the present invention; Figure 19 This is one of the partial cross-sectional views of the pressing mechanism of the present invention; Figure 20 This is a second partial sectional view of the pressing mechanism of the present invention; Figure 21 This is an isometric view of the guiding mechanism of the present invention; Figure 22 This is one of the first vehicle embodiments of the present invention; Figure 23 This is a partial isometric view of the pressing mechanism of the present invention; Figure 24 This is a third partial sectional view of the pressing mechanism of the present invention; Figure 25 This is an isometric view of another embodiment of the press-fitting mechanism of the present invention; Figure 26 This is one of the isometric views of the defect detection mechanism of the present invention; Figure 27 This is the second isometric drawing of the defect detection mechanism of the present invention; Figure 28 This is one of the isometric views of the needle holder feeding mechanism of the present invention; Figure 29 This is the second isometric view of the needle holder feeding mechanism of the present invention; Figure 30 This is an isometric view of the product of this invention. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] like Figure 1-30 As shown, an automatic assembly device for embedding injection needles includes a needle tube and needle hub assembly device 100 and a sheath assembly device 400, wherein the needle tube and needle hub assembly device 100 and the sheath assembly device 400 can share a single frame.

[0021] The needle tube and needle hub assembly device 100 and the sheath assembly device 400 can also be set separately from each other, each on a different frame.

[0022] A shifting mechanism is provided between the needle tube and needle hub assembly device 100 and the sheath assembly device 400 for the transfer of the needle 20.

[0023] The needle tube and needle hub assembly device 100 and the sheath assembly device 400, as well as the shifting mechanism 500 between the needle tube and needle hub assembly device 100 and the sheath assembly device 400, realize the automatic assembly of the embedded injection needle. The needle tube and needle hub assembly device 100 is used for riveting the needle tube and the needle hub. After riveting, the needle tip 20 is moved to the sheath assembly device 400 through the shifting mechanism 500 and assembled with the sheath in the sheath assembly device 400 to form an injection needle.

[0024] The automatic assembly process of the needle tube and needle seat is as follows: needle seat feeding, needle seat detection, needle tube feeding, and press-fitting and riveting of the needle tube and needle seat to form the needle head 20. For each assembly step in the assembly process, a corresponding mechanism needs to be set up to realize the corresponding assembly step. At the same time, in order to realize continuous assembly, the mechanism is continuously arranged on a conveyor line. The conveyor line transports the workpiece through the conveyor line. The conveyor line is driven by a drive device to rotate. The needle head is formed by needle seat feeding, needle seat detection, needle tube feeding, and press-fitting and riveting of the needle tube and needle seat.

[0025] The conveyor line can be a belt conveyor, a chain conveyor, or a rotating component, such as a turntable. The turntable is equipped with actuators for needle holder feeding, needle holder detection, needle tube feeding, and press-fitting and riveting of needle tube and needle holder to realize the assembly of needle tube and needle holder.

[0026] Specifically, the needle tube and needle seat assembly device 100 includes a first frame 170, which is a box-type frame. A first indexer 1703 is provided on the first frame 170. The first indexer 1703 enables intermittent movement, allowing the corresponding mechanisms to synchronously perform the corresponding assembly steps. Then, the needle is continuously fed to the next mechanism, ultimately achieving the riveting of the needle tube and needle seat to form a needle.

[0027] The first frame 170 is equipped with a first drive motor 1701 and a first reducer 1702. The output shaft of the first drive motor 1701 is connected to the input end of the first reducer 1702, and the output end of the first reducer 1702 is connected to the input end of the first indexer 1703. The first reducer 1702 matches the speed and transmits the torque between the prime mover and the working machine or actuator.

[0028] The output end of the first indexer 1703 is connected to a first rotary table 160. The first rotary table 160 can be connected to the output end of the first indexer 1703 to realize intermittent motion. During the intermittent motion, each mechanism can synchronously realize the corresponding assembly steps, and the entire riveting process can be realized continuously.

[0029] The first rotary table 160 is provided with a plurality of first carriers 1623. The number of first carriers 1623 is related to the assembly steps of the needle tube and needle hub. Generally, one assembly step corresponds to one first carrier. In order to adjust the assembly frequency and match the intermittent beat of the first indexer 1703, a first carrier 1623 may be set between two assembly steps for transition, or two or more first carriers 1623 may be set in one assembly step to realize the corresponding assembly steps. In this embodiment, the first rotary table is provided with ten first carriers 1623, and the ten first carriers 1623 are arranged in a ring. Positioned near the edge of the first rotary table 160, each group includes at least two first carriers 1623. The two first carriers 1623 in any group are equally spaced. The first carriers 1623 are mainly used for carrying and transferring the needle holder. The first carriers 1623 are fixed on the first rotary table 160 and rotate with the first rotary table 160 to transfer the needle holder to the corresponding work station of the assembly step. Finally, the needle tube and the needle holder are riveted together to form the needle head 20. After the riveted needle head 20 is removed, the first carrier 1623 is left empty. Then it rotates back to the needle holder feeding mechanism for needle holder feeding, and the cycle continues.

[0030] like Figure 7As shown, in order to ensure that the needle holder can be stably placed on the first carrier 1623 and is not easily dislodged during the rotation of the first rotary table 160, and to center the needle holder so that the needle tube can be positioned and engaged with the needle holder, one embodiment provides a first carrier 1623. The first carrier 1623 has a conical tip 160a at its upper part, and the needle holder can be fitted onto the tip 160a to achieve needle holder centering; the first carrier 1623 has a ring platform 160b in its middle part, and after the needle holder is fitted onto the tip 160a, the bottom of the needle holder... It can abut against the ring platform 160b, so that the needle seat can be placed stably on the ring platform 160b; the lower part of the first carrier 1623 is a cylinder 160c, and the first rotary table 160 corresponding to the first carrier 1623 is provided with a through hole. The lower part of the first carrier 1623 is inserted into the through hole. The first carrier 1623 can be fixed by interference fit, or the lower part of the first carrier 1623 can be fixed by passing through the through hole on the first rotary table 160 and then locking it with nut 160d.

[0031] The needle hub is mounted on the first carrier 1623 via the needle hub feeding mechanism 110, and then the needle hub is transferred via the first carrier 1623. The needle hub is assembled with the needle tube feeding mechanism 120 and the needle tube and needle hub are press-fitted and riveted together.

[0032] In the step of assembling the needle tube into the needle hub, the needle tube needs to be guided and inserted into the needle hub. Therefore, the first rotary table 160 is also provided with a needle tube guiding and pressing mechanism corresponding to the number of first carriers 1623. Each first carrier 1623 is correspondingly provided with one needle tube guiding and pressing mechanism. The needle tube guiding and pressing mechanism is arranged radially along the first rotary table 160 on the side of the first carrier 1623 near the center of the first rotary table 160. The needle tube guiding and pressing mechanism is used to guide the needle tube into the needle hub and realize the riveting of the needle tube and the needle hub through the pressing mechanism. Specifically, The needle tube guiding and pressing mechanism includes a guide seat 1601. The guide seat 1607 is provided with a pressing head 1608 that penetrates the guide seat. The pressing head 1608 has a through guide hole. The upper end of the guide hole has a tapered receiving hole 1609, and the lower end has a tapered riveting hole 1611. The needle tube enters the guide hole through the tapered receiving hole 1608 and is inserted into the needle seat along the guide hole. Then, the pressing mechanism 140 applies pressure to the needle tube guiding and pressing mechanism. The tapered riveting hole 1611 of the pressing head 1608 presses the upper end of the needle seat to realize the riveting of the needle tube and the needle seat to form a needle.

[0033] like Figure 8As shown, during the entire riveting process, the needle guide pressing mechanism needs to move up and down along the Z-axis of the first frame 170 as the first rotary table 160 rotates, changing the distance between the needle guide pressing mechanism and the first carrier to coordinate the needle guiding, pressing, and other assembly steps. Therefore, the needle guide pressing mechanism is mounted on a rotary lifting mechanism, which includes linear bearing groups corresponding to the number of first carriers 1623. Each linear bearing group corresponds to one needle guide pressing mechanism. Each linear bearing group is radially positioned along the first rotary table 160 on the side of the needle guide pressing mechanism near the center of the first rotary table 160. Each linear bearing group includes two linear bearings 1603, each linear bearing 1603 extending through the first rotary table 160 along the Z-axis. Each linear bearing 1603 contains a sliding... The guide shaft 1602 is matched with a set of linear bearings 1603. The upper end of the two guide shafts 1602 is provided with an upper connecting plate 1601. The guide seat 1607 of the needle tube guiding and pressing mechanism is suspended on the upper connecting plate 1601. The upper connecting plate 1601 is also provided with a through hole corresponding to the guide hole and communicating with the guide hole. The lower end of the two guide shafts 1602 in the set of linear bearings 1603 is provided with a lower connecting plate 1604. The lower connecting plate 1604 is provided with a bearing 1605 that is perpendicular to the radial direction of the first rotary disk 160 and is vertically arranged. A rotary cam 1606 is provided below the bearing 1605. The rotary cam 1606 is provided with a cam surface that matches the entire riveting process. The bearing 1605 abuts against the cam surface of the rotary cam 1606 and rotates and moves up and down, thereby driving the needle tube guiding and pressing mechanism to move up and down.

[0034] The needle tube and needle seat are changed in the vertical direction by means of the first carrier 1623, the needle tube guiding and pressing mechanism corresponding to the first carrier 1623, and the rotary lifting mechanism that makes the needle tube guiding and pressing mechanism continuously rise and fall. At the same time, the needle tube and needle seat are automatically assembled by riveting by means of the corresponding needle seat feeding mechanism 110, needle seat detection mechanism 120, needle tube feeding mechanism 130, and pressing mechanism 140.

[0035] To better understand the needle tube and needle seat riveting process, in this embodiment, with the device stopped, the needle seat feeding mechanism 110 is defined as the first station, the first carrier 1623 corresponding to the first station is the first group of first carriers 1623, and the needle tube guiding and pressing mechanism corresponding to the first station is the first needle tube guiding and pressing mechanism; according to the riveting assembly sequence, the second station is the needle seat detection mechanism and corresponds to the second group of first carriers 1623 and the second needle tube guiding and pressing mechanism; the third station is the needle tube feeding mechanism and corresponds to the third group of first carriers 1623 and the third needle tube guiding and pressing mechanism; the fourth station is the pressing mechanism and corresponds to the fifth group of first carriers 1623. 623, the sixth group of first carriers 1623 and the fifth and sixth needle tube guiding and pressing mechanisms; the fourth group of first carriers 1623 is a transition carrier between the third and fourth stations; the fifth station is a needle seat and needle tube positioning mechanism and corresponds to the seventh group of first carriers and the seventh needle tube guiding and pressing mechanism; the sixth station is a feeding mechanism and corresponds to the ninth group of first carriers 1623 and the ninth needle tube guiding and pressing mechanism; the eighth group of first carriers 1623 is a transition carrier between the fifth and sixth stations; the seventh station is a detection station or transition station and corresponds to the tenth group of first carriers 1623 and the tenth needle tube guiding and pressing mechanism.

[0036] When the device is in operation, the first set of first carriers 1623 and the first needle tube guiding and pressing mechanism advance from the first station to the seventh station as the first rotary table 160 rotates, that is, the position of the first set of first carriers 1623 and the first needle tube guiding and pressing mechanism in the stopped state gradually changes to the position of the tenth set of first carriers 1623 and the tenth needle tube guiding and pressing mechanism.

[0037] This embodiment details how each workstation completes the corresponding assembly steps in the riveting process. Specifically, the needle holder feeding mechanism 110 corresponding to the first workstation is set on the first frame 170 outside the first rotary table 160 corresponding to the first set of first carriers 1623. The needle holder feeding mechanism 110 includes a vibratory feeder 1101, which adjusts the feeding of needle holders according to the same needle holder state with the riveting end facing upward. The output end of the vibratory feeder 1101 is provided with a flat vibrating table 1102, and the discharge end of the flat vibrating table 1102 is provided with a material discharge device. Plate 1105, the material discharge plate 1105 extends between the first set of first carriers 1623 and the first needle tube guiding and pressing mechanism. At this time, the first needle tube guiding and pressing mechanism is located at a high position in the rotary lifting mechanism. There is a large space between the first needle tube guiding and pressing mechanism and the first set of first carriers 1623 to accommodate the material discharge plate 1105. The material discharge plate 1105 is provided with a material discharge groove 1108 that is offset from the discharge end along the tangential direction of the first rotary table 160. The material discharge groove 1108 is directly opposite the first set of first carriers 1623 below. The number of material discharge grooves 1108 is... In this embodiment, to match the number of the first carriers in the first group, the flat vibrating table 1102 has two discharge ends. The discharge plate 1105 has two discharge troughs 1108 corresponding to the two first carriers 1623. A pusher plate 1104 is located above the discharge troughs 1108. The pusher plate 1104 has material troughs 1103 corresponding to the two discharge ends and communicating with them. A first cylinder 1106 is located on the discharge plate 1105 corresponding to one end of the pusher plate 1104 along the tangent direction of the first rotary table 1623. The piston rod of the first cylinder 1106 is connected to the pusher plate 1104. The needle seat enters the material groove 1103 of the pusher plate from the discharge end of the flat vibrating table 1102. Then, the first cylinder 1106 pushes the needle seat along the tangential direction of the first rotary table 1623 through the pusher plate 1104 and enters the material groove 1108 of the dropping plate 1105. Then, it falls freely from the material groove 1108 onto the first set of first carriers 1623. The riveted end of the needle seat is fitted upward on the first set of first carriers 1623, and the bottom of the needle seat abuts against the ring platform of the first set of first carriers 163.

[0038] In another embodiment, the needle holder feeding mechanism 110 corresponding to the first station can also use a robotic arm with a suction cup for feeding. The robotic arm moves the needle holder on the flat vibrating table to the first set of first carriers 1623. The robotic arm moves the suction cup above the needle holder on the flat vibrating table to attract the needle holder, and then moves to the first set of first carriers 1623 to close the suction cup so that the needle holder automatically falls onto the needle holder.

[0039] The above implementation method specifically illustrates how to install the needle holder on the first assembly first carrier 1623 at the first station to realize the feeding of the needle holder and supply the needle holder for riveting with the needle tube.

[0040] In order to realize the automatic operation of the first cylinder 1106, a first sensor is provided on one side of the discharge end of the flat vibrating table 1102 to detect the supply of needle seats, determine whether there are needle seats on the first carrier 1623 of the first group, and control the operation of the first cylinder 1106 through the controller.

[0041] The needle seat detection mechanism 120 corresponding to the second workstation is set on the first frame 170 outside the first rotary table 160 corresponding to the second group of first carriers 1623. The needle seat detection mechanism 120 includes a first support rod corresponding to the first carrier. A second sensor is provided on the first support rod. The second sensor determines whether there is a needle seat on the first carrier and feeds the information back to the controller. The controller then controls the action of the needle tube feeding mechanism and the pressing mechanism. In this embodiment, two first carriers are set for the second workstation. The corresponding needle seat detection mechanism includes two first support rods. Each first support rod is provided with a second sensor that corresponds to the second group of first carriers 1623.

[0042] While the needle holder is being tested, the needle tube guiding and pressing mechanism falls with the rotary lifting mechanism, causing the tapered riveting hole at the lower part of the guide hole to abut against the end of the needle holder on the first carrier 1623, thus achieving the connection of the needle tube guide. That is, the distance between the second needle tube guiding and pressing mechanism and the second group of first carriers 1623 becomes smaller than the distance between the first needle tube guiding press and the first group of first carriers. The second needle tube guiding and pressing mechanism is located at the lower position in the rotary lifting mechanism.

[0043] The needle feeding mechanism 130 corresponding to the third station is set on the first frame 170 outside the first rotary table 1623 corresponding to the first carrier of the third group. The needle feeding mechanism 130 includes a needle support 1310, a needle support plate on the needle support, and a needle material groove 1302 on the needle support plate. The needle material groove 1302 is W-shaped and inclined, with the side closer to the first rotary table 1623 inclined upward. A needle roller 1303 is provided at each of the two bottoms of the W-shaped needle material groove 1302. A set of grooves 1304 arranged in a ring array are provided on the outer circumference of the two needle rollers 1303 for accommodating needles. The needle support plate is provided with through grooves 1306 that correspond one-to-one with the two needle rollers. The end of each needle roller 1303 away from the center of the first rotary table 1623 corresponds to Each needle tube support plate is equipped with a variable frequency motor 1301. Each variable frequency motor 1301 is connected to one end of the corresponding needle tube roller 1303 through a set of transmission gears. A needle tube guide plate 1307 is provided below the needle tube support plate. The needle tube guide plate 1307 is provided with needle tube guide grooves that correspond one-to-one with the through grooves 1306 on the needle tube support plate. The outlet of the needle tube guide groove is connected to the through hole of the upper connecting plate of the corresponding third needle tube guide pressing mechanism. When the needle tubes are piled up in the needle tube material trough 1302, the needle tubes near the roller groove 1304 fall into the groove and rotate with the needle tube roller 1303 to the top of the through groove 1306 of the needle tube support plate. Then, they fall from the through groove 1306 of the needle tube support plate into the needle tube guide groove. In the needle tube guide groove, the needle tube changes from a horizontal state to a vertical state and is inserted into the needle seat through the needle tube guide pressing mechanism.

[0044] In another embodiment, the needle feeding mechanism includes a needle support, on which a needle support plate 1310 is provided. A needle material groove 1302 is provided on the needle support plate. The needle material groove 1302 is W-shaped, and a needle roller shaft 1303 is provided at each of the two bottoms of the W-shaped needle material groove 1302. A variable frequency motor 1301 is provided on the needle support plate corresponding to the end of each needle roller shaft 1303 furthest from the center of the first rotary table 1623. Each variable frequency motor 1301 is connected to one end of the corresponding needle roller shaft 1303 via a set of transmission gears. A set of annular arrays is provided on the outer circumferential surface of both needle roller shafts 1303. A recess 1304 is provided to accommodate a needle tube. The needle tube support plate has through slots 1306 corresponding to the two roller shafts. A hinged needle tube baffle 1311 is provided within the through slots 1306. At least one side of the needle tube baffle 1311 is adapted to the length of the recess 1303. A first needle tube cylinder 1309 is provided on the outside of the needle tube support plate. The piston rod of the first needle tube cylinder 1309 extends from the outside of the through slots 1306 into the through slots 1306. The end of the piston rod is hinged to the needle tube baffle 1311. When the piston rod of the first needle tube cylinder 1309 is extended, the side of the needle tube baffle 1311 is located within the recess 1304. The port of the through groove 1306 directly below is sealed, preventing the needle tube in the groove 1304 from falling into the through groove 1306. When the piston rod of the first needle tube cylinder 1309 is retracted, the needle tube baffle 1311 rotates around the hinge axis. The side of the needle tube baffle 1311 opens the port of the through groove 1306 directly below from one end of the groove 1304, allowing the needle tube in the groove 1304 to fall obliquely down along the side of the corresponding needle tube baffle 1311 into the through groove 1306, changing the needle tube from a horizontal to a vertical position. A needle tube guide plate 1307 is provided at the bottom of the through groove 1306. The needle guide plate 1307 has a wedge-shaped guide side, which forms a wedge-shaped needle guide groove with an inner side of the through groove 1306. The outlet of the needle guide groove is connected to the through hole of the upper connecting plate corresponding to the third needle guide pressing mechanism. When the needles are piled up in the needle material groove 1302, the needles near the needle roller groove fall into the groove and rotate with the needle roller 1303 to the top of the through groove of the needle support plate. Then, they fall into the needle guide groove from the through groove 1306 of the needle support plate. In the needle guide groove, the needle changes from a horizontal state to a vertical state and is inserted into the needle seat through the needle guide pressing mechanism.

[0045] A needle tube baffle 1308 is provided between the outlet of each needle tube guide groove and the through hole of the upper connecting plate corresponding to the third needle tube guide pressing mechanism. The needle tube baffle 1308 can control the communication state between the outlet of the needle tube guide groove and the through hole. A needle tube baffle cylinder 1309 is provided on the needle tube support 1310. The piston rod of the needle tube baffle cylinder 1309 is connected to the needle tube baffle 1308. The needle tube baffle cylinder 1309 can automatically extend and retract the needle tube, thereby realizing the automatic control of the needle tube feeding device.

[0046] The pressing mechanism 140 corresponding to the fourth station is set on the first frame 170 outside the first rotary table 160 between the first carrier of the fifth group and the first carrier of the sixth group. The pressing mechanism 140 includes a pressing support 140c. The pressing support 140c is equipped with two electric cylinders 140b, which correspond one-to-one with the adjacent first carriers of the fifth group and the first carrier of the sixth group. Each electric cylinder 140b is equipped with a matching servo motor 140a on one side of the pressing support 140c. In this embodiment, a parallel electric cylinder is used. The electric cylinder is mainly composed of a motor and a nut and screw mechanism. The servo motor is connected to the screw through a transmission gear. The screw is equipped with a sleeve nut. The nut moves linearly along the screw to press against the needle tube guide pressing mechanism to realize the pressing and riveting of the needle seat.

[0047] Specifically, the pressing mechanism 140 includes two electric cylinders 140b, one of which is configured to correspond to the fifth group of first carriers, and the other is configured to correspond to the sixth group of first carriers. This configuration is mainly due to space and production capacity requirements, as it provides sufficient space for the two electric cylinders and improves production efficiency.

[0048] Of course, hydraulic cylinders or pneumatic cylinders can be used instead of electric cylinders as the pressing mechanism. However, electric cylinders have high positioning accuracy, high reliability and safety, and fast response. Since the riveting of the needle tube and the needle seat only requires a small amount of downward pressure, electric cylinders can better meet the assembly requirements of the needle tube and the needle seat.

[0049] At the fifth station, the fifth needle tube guiding and pressing mechanism corresponding to the fifth group of first carriers 1623 and the sixth needle tube guiding and pressing mechanism corresponding to the sixth group of first carriers 1623 fall back along the rotary lifting mechanism. The fifth needle tube guiding and pressing mechanism and the sixth needle tube guiding and pressing mechanism are located at the low position in the rotary lifting mechanism. The conical riveting hole of the pressing head presses against the upper end of the needle seat. Before riveting, the upper end of the needle seat is an annular step. Pressure is applied to the upper connecting plate above the fifth needle tube guiding and pressing mechanism or the sixth needle tube guiding and pressing mechanism by the electric cylinder 160b, so that the fifth pressing head or the sixth pressing head presses down and deforms the annular step of the needle seat into a conical step, thereby riveting the needle tube and the needle seat together to form a needle. When the needle tube and the needle seat are riveted together, the required downward pressure is less than The 0.5mm gap can be controlled by the rotary lifting mechanism. That is, when the pressure head of the fifth or sixth needle tube guiding pressing mechanism presses against the upper end of the needle seat, the corresponding lower bearing in the rotary lifting mechanism has a 0.5mm gap with the cam surface of the rotary cam. This allows the needle tube guiding pressing mechanism to have a certain downward pressing space when the electric cylinder is working. However, due to the connection method between the needle tube guiding pressing mechanism and the first rotary disk 160, the first rotary disk may also be subjected to force. Therefore, a support bearing 140d is provided on the pressing support 140c directly below the first rotary disk 160 corresponding to each electric cylinder 16b. The support bearing 140d contacts the lower end of the fifth group of first carriers 1623 or the sixth group of first carriers 1623.

[0050] like Figure 6 As shown, the needle holder and needle tube positioning mechanism corresponding to the fifth station is set on the first frame 170 outside the first rotary table 160 corresponding to the seventh first carrier. The needle holder and needle tube positioning mechanism includes two positioning cylinder brackets, each of which is equipped with a positioning cylinder. The piston rod end of the positioning cylinder is equipped with a push head. After the needle tube and needle holder are riveted by the pressing mechanism, the needle holder and the pressing head are more tightly connected. However, in order to facilitate the downward movement of the riveted needle, the needle tube guiding pressing mechanism needs to be lifted upward with the rotary lifting mechanism to separate the needle tube guiding pressing mechanism from the needle. However, since the needle holder and the pressing head are in an interference fit state when the needle holder and the needle tube are pressed together, the needle tube guiding pressing mechanism may cause the needle holder to detach from the first carrier when it is lifted upward with the rotary lifting mechanism. Therefore, the needle holder and needle tube positioning mechanism presses the needle holder from the side of the needle holder to make the needle tube guiding pressing mechanism rise with the rotary lifting mechanism and detach from the needle holder.

[0051] In another embodiment, the needle tube and needle seat assembly device uses different first carrier structures and pressing mechanisms to achieve automatic riveting of the needle tube and needle seat. In this embodiment, the automatic riveting process of the needle tube and needle seat assembly device includes at least carrier lifting, needle seat feeding, needle tube feeding, needle tube detection, carrier pressing, and pressing and riveting of the needle tube and needle seat to form a needle. For any assembly step in the riveting process, a corresponding mechanism needs to be set up to realize the corresponding assembly step. That is, the needle tube and needle seat assembly device includes at least a carrier lifting mechanism, a needle seat feeding mechanism 110, a needle tube feeding mechanism 120, a needle tube detection mechanism 130, a carrier pressing mechanism, and a pressing mechanism of the needle tube and needle seat 140. At the same time, in order to realize continuous assembly, the above-mentioned mechanisms are arranged sequentially around the first frame around the first turntable. During the intermittent movement of the first turntable, each mechanism can realize the corresponding assembly step synchronously and can continuously realize the entire riveting process.

[0052] To facilitate the transfer between the needle hub and the needle tube, the first rotary table 160 is connected to the output end of the first indexer. The first rotary table 160 is provided with several sets of first carriers 1623. Generally, one assembly step corresponds to one set of first carriers 1623. In this embodiment, the first rotary table 160 is provided with twelve sets of first carriers 1623, arranged in a ring near the edge of the first rotary table 160. Each set of first carriers 1623 includes at least four first carriers 1623. Two adjacent first carriers 1623 in the group are set at equal intervals. The first carrier 1623 is mainly used for carrying the needle seat and the needle seat. The first carrier is fixed on the first rotary table 160 and rotates intermittently with the first rotary table 160 to transfer the needle seat to the mechanism corresponding to the assembly step. Finally, the needle seat and the needle tube are riveted together to form a needle. Finally, the riveted needle is moved by the shifting mechanism to empty the first carrier 1623. Then it is rotated to the needle seat feeding mechanism 110 for needle seat feeding, and the cycle continues.

[0053] To ensure the needle holder can be stably placed on the first carrier 1623 and not easily detached during the intermittent rotation of the first rotary table 160, and to center the needle holder so that the needle tube can be positioned and engaged with it, and to achieve the longitudinal alignment of the needle tube and needle holder through the cooperation of the first carrier 1623 and the carrier lifting mechanism, this embodiment provides a first carrier 1623. The first carrier includes a base 1621 with a blind hole at the upper end for supporting the needle tube, and the depth of the blind hole controls the longitudinal position of the needle tube. A protective seat 1622 is provided on the base 1621, and the protective seat 1622 has a through hole for fitting onto the base 1621. Under the action of the carrier lifting mechanism, the protective seat 1622 can be lifted axially along the base 1621. The through hole on the protective seat 1622 matches the shape of the needle holder and is used to receive the needle holder at the needle holder feeding mechanism.

[0054] In operation, the first vehicle 1623 intermittently advances from the position of the first group when it is in the stopped state to the position of the twelfth group, and rotates continuously in a cycle.

[0055] How each mechanism in the needle tube and needle hub assembly completes the corresponding assembly steps in the riveting process is explained in detail in this embodiment, in conjunction with the corresponding specific mechanisms and the first carrier 1623, under the condition of machine shutdown. Specifically: The vehicle lifting mechanism is mounted on a first frame 170 outside the first rotary table 160 corresponding to the first vehicle 1623 in the first group. The vehicle lifting mechanism includes a vehicle lifting bracket, on which a horizontally mounted vehicle translation cylinder is mounted. The piston rod end of the vehicle translation cylinder is equipped with a vertically mounted vehicle lifting cylinder, and the piston rod end of the vehicle lifting cylinder is equipped with a vehicle lifting seat. The vehicle lifting seat lifts the base from the first vehicle 1623 from the outside of the first vehicle. An annular support platform is also mounted on the first frame 170 outside the first rotary table 160 between the vehicle lifting mechanism and the vehicle pressing mechanism. The base 1621 is lifted by the vehicle lifting mechanism onto the annular support platform and moves intermittently along the annular support platform with the first rotary table 160.

[0056] The needle seat feeding mechanism 160 is set on the first frame outside the first rotary table corresponding to the second group of first carriers. The needle seat feeding mechanism includes a needle seat vibrating plate. The needle seat vibrating plate adjusts and feeds the needle seats according to the same needle seat state with the riveting end facing down. An impeller is provided on the upper part of the needle seat discharge end of the needle seat vibrating plate. One end of the impeller is connected to the impeller motor through a transmission belt. The impeller has four blades. The blades rotate under the drive of the impeller motor and restrict the needle seats to the needle seat discharge end of the needle seat vibrating plate through the blades, so that the needle seats are fed in accordance with the intermittent movement rhythm of the first indexer.

[0057] The needle seat vibratory feeder has a needle seat receiving component at its discharge end. The needle seat receiving component has a set of needle seat receiving grooves. A needle seat guide is located below the needle seat receiving component. A set of needle seat dropping channels is located on the needle seat guide. The needle seat enters the needle seat receiving groove from the needle seat discharge end of the needle seat vibratory feeder, and then enters the corresponding needle seat dropping channel from the needle seat receiving groove. In order to control the feeding rhythm of the needle seat in the needle seat receiving groove and the needle seat dropping channel to be synchronized with the intermittent movement rhythm of the first indexer, a first needle seat blocking cylinder is vertically set above the needle seat receiving component. A set of first needle seat blocking rods is provided on the piston rod at the lower end of the first needle seat blocking cylinder. The first needle seat blocking rods can be inserted into the needle seat located in the needle seat receiving groove near the needle seat dropping channel, restricting the needle seat in the needle seat receiving groove, so that the needle seat in the needle seat receiving groove located directly above the needle seat dropping channel falls into the needle seat dropping channel.

[0058] A second needle seat blocking cylinder is provided on the side of the needle seat guide near the first rotary table. The piston rod of the second needle seat blocking cylinder is provided with a set of second needle seat blocking rods. The second needle seat blocking rods are inserted radially into the needle seat dropping channel to control the needle seat to fall from the needle seat dropping groove into the needle seat dropping channel.

[0059] A third needle seat blocking cylinder is horizontally positioned on the side of the needle seat guide away from the first rotary table. A needle seat frame is mounted on the piston rod of the third needle seat blocking cylinder. The needle seat frame is fitted onto the needle seat guide. A set of third needle seat stops and a set of fourth needle seat stops are respectively mounted on the needle seat frames on both sides of the needle seat guide. The third and fourth needle seat stops are inserted radially into the needle seat dropping channel from both sides. The third and fourth needle seat stops are staggered vertically and are used to control the dropping rhythm of the upper and lower layers of needle seats in the needle seat dropping channel. When the third needle seat blocking cylinder is activated, the upper third needle seat stop restricts the upper layer of needle seats in the needle seat dropping channel, while the lower fourth needle seat stop opens the needle seat dropping channel, allowing the lower layer of needle seats to fall.

[0060] A fourth needle seat blocking cylinder is horizontally positioned at the bottom of the needle seat guide near the first rotary table. The piston rod end of the fourth needle seat blocking cylinder has a needle seat guide plate with a set of vertically positioned U-shaped needle seat grooves. A needle seat baffle plate cooperates with the guide plate at the bottom of the needle seat guide. When the fourth needle seat blocking cylinder is activated, the needle seat guide plate and the needle seat baffle fit together and embrace the upper end of the raised support seat, forming a closed needle seat through-hole in the U-shaped needle seat grooves. This allows the needle seat to fall stably into the support seat through the through-hole. Then, when the fourth needle seat blocking cylinder reverses its direction, the needle seat guide plate moves away from the needle seat baffle. The first carrier carries the needle seat and rotates intermittently with the first rotary table. The fourth needle seat blocking cylinder ensures the needle seat falls stably into the support seat while preventing interference between the raised support seat and the needle seat feeding mechanism.

[0061] In another embodiment, the needle holder feeding mechanism may also use a robotic arm with a suction cup for feeding. The robotic arm moves the needle holder on the needle holder plate vibration table to the first carrier. The robotic arm moves the suction cup above the needle holder on the needle holder plate vibration table to attract the needle holder. Then, it moves above the first carrier and closes the suction cup, causing the needle holder to automatically fall onto the first carrier.

[0062] The above implementation method specifically illustrates how to install the needle seat on the first carrier through the needle seat feeding mechanism to realize the feeding of the needle seat and supply the needle seat for riveting between the needle seat and the needle tube.

[0063] In order to realize the automatic operation of the needle seat pusher cylinder, a needle seat supply sensor is provided on one side of the discharge end of the needle seat plate vibration table to detect the supply of needle seats, determine whether there are needle seats supplied, and control the operation of the needle seat pusher cylinder through the controller.

[0064] The needle hub vibratory feeder can adopt the vibratory feeder structure of the safety syringe needle hub feeding device disclosed in Publication (Announcement) No.: CN217894276U, or the vibratory feeder for directional sorting and conveying of injection needle hubs disclosed in Publication (Announcement) No.: CN112093428A, or the vibratory feeder structure of an automatic directional feeding machine for blood collection needle hard seats disclosed in Publication (Announcement) No.: CN105109931A.

[0065] The needle feeding mechanism is mounted on a first frame outside the first rotary table corresponding to the first carrier in the third group. The mechanism includes a needle support, on which a needle box for holding needles is mounted. A vertically positioned first needle-pushing cylinder is located at the bottom of the needle box. A needle plate seat is mounted on the piston rod of the first needle-pushing cylinder. A set of vertically positioned ejector pins is mounted on the needle plate seat. The number of ejector pins matches the number of carriers in the first group. The ejector pins are radially arranged along the first rotary table and have needle grooves for holding needles. The upper ends of the set of ejector pins penetrate the bottom of the needle box. Under the action of the first needle-pushing cylinder, the mechanism reciprocates up and down, feeding needles one by one from the needle box. The needle tube is removed from the needle box. A second needle-pushing cylinder is horizontally arranged on the needle tube support near the first rotary table at the upper end of the needle box. The second needle-pushing cylinder is radially arranged along the first rotary table. A push plate seat is provided on the piston rod of the second needle-pushing cylinder. A push plate groove is provided on the push plate seat. A needle tube push plate that can move vertically reciprocating is provided in the push plate groove. The needle tube push plate and the ejector plate are orthogonally staggered. Guide wheels are provided at both ends of the bottom of the push plate. A pair of lifting guide rails are provided on the upper end of the needle box near the second needle-pushing cylinder, which are arranged along the movement direction of the piston rod of the second needle-pushing cylinder. The guide wheels at both ends of the needle tube push plate are respectively rolled on the lifting guide rails on the corresponding side.

[0066] Two vertically arranged needle-dropping plates are also provided on one side of the needle box below the second needle-dropping cylinder. Each needle-dropping plate has a set of vertically arranged needle-dropping grooves, which are V-shaped grooves. The upper end of each needle-dropping groove is supported below a pair of lifting guide rails and is arranged in a corresponding manner with the needle-dropping plates. The lower end of each needle-dropping groove is supported in a corresponding manner with the third set of first carriers. Each needle tube support on the opposite side of each needle-dropping plate is provided with a third needle-dropping cylinder. The piston rod of each third needle-dropping cylinder is connected to the adjacent needle-dropping plate.

[0067] The needle tubes are placed in the needle box in a uniform direction. The first needle-pushing cylinder pushes the needle tube out of the needle box through the needle-pushing plate. Then, the second needle-pushing cylinder pushes the needle tube out of the needle box from the needle-pushing plate to the inside of the first rotary table through the push plate. At the same time, the third needle-pushing cylinder pushes the two needle-dropping plates to merge, so that the two V-shaped grooves merge into a diamond-shaped groove, which corresponds one-to-one with the third set of first carriers. Under the action of the needle tube push plate, one end of the needle tube falls into the diamond-shaped groove first. Then, the needle tube push plate is lifted along the lifting guide rail and drives the other end of the needle tube to be lifted, changing the needle tube from a horizontal state to a vertical state. Then, it falls into the base of the first carrier along the diamond-shaped groove.

[0068] The needle detection mechanism is set on the first frame outside the first rotary table corresponding to the first carrier of the fourth group. The needle detection mechanism includes a needle detection bracket, and a needle detection sensor is provided on the needle detection bracket. The detection sensor determines whether there is a needle on the first carrier and feeds the information back to the controller. The controller then controls the action of the pressing mechanism. In this embodiment, there are four first carriers, and the corresponding needle detection bracket is provided with four needle detection sensors, which are set one-to-one with the first carrier of the fourth group.

[0069] The carrier pressing mechanism is mounted on the first frame outside the first rotary table 160 corresponding to the first carrier in the fifth group. The carrier pressing mechanism includes a carrier pressing bracket, on which a vertically mounted carrier pressing cylinder is installed. A carrier pressing plate is mounted on the piston rod of the carrier pressing cylinder. The carrier pressing plate can press against the protective seat of the first carrier. The protective seat of the first carrier in the fifth group disengages from the annular support platform as the first rotary table rotates intermittently. To facilitate the riveting of the needle hub and needle tube... To ensure the needle hub is completely exposed, in the preceding process, in order for the needle hub to be stably installed on the first carrier, the protective seat on the first carrier is lifted, and the needle hub falls into the protective seat. Therefore, before the needle hub is riveted to the needle tube, the protective seat that has detached from the annular support platform is pressed down by the carrier pressing mechanism to ensure that the protective seat is completely separated from the needle hub, so that the protective seat returns to the initial position of the base. At this time, since the needle tube has been inserted into the needle hub and the needle tube has been inserted into the blind hole of the base, the needle hub can be fixed on the top of the base.

[0070] The pressing mechanism 140 consists of four sets of linked pressing mechanisms 140. These four sets of pressing mechanisms 140 are sequentially arranged on the first frame 170 outside the first rotary table 160 corresponding to the sixth to ninth sets of first carriers 1623. Each pressing mechanism 140 presses a needle hub and needle tube from one set of first carriers 1623. Each pressing mechanism 140 includes a pressing bracket 1401. A pressing head support 1406 is provided on the side of the pressing bracket 1401 near the first rotary table 160. The pressing head support 1406 has four vertically arranged pressing push rod grooves. Below each pressing push rod groove, the corresponding pressing head support 1406 has four pressing head guide grooves arranged radially along the pressing head support 1406. The four pressing head guide grooves are arranged in a circular array. Each pressing head guide groove... A press-fit push rod 1411 is provided in the push rod groove, and a press head 1412 is provided in each press head guide groove. The end of the press-fit push rod 1411 and the press head 1412 is a wedge-shaped surface. The press-fit push rod 1411 pushes the press head to move radially through the wedge-shaped surface. The press head 1412 squeezes the needle seat to produce deformation, so that the needle seat is riveted to the needle tube. After riveting, the press head must return to the initial position. Therefore, a press-fit spring seat is provided on the press head parallel to the press head. A press-fit spring is provided on the press-fit spring seat parallel to the press head. Above the press head guide groove of the press head support 1406, a press-fit spring groove parallel to the press head is also provided. The press-fit spring is installed in the press-fit spring groove. One end of the press-fit spring abuts against the press-fit spring seat, and the other end abuts against the inner wall of the press-fit spring groove.

[0071] The bottom of the pressure head support 1406 is provided with a pressing channel 1409 that is staggered with the pressure head guide groove. The pressing channel 1409 is arranged along the tangential direction of the first rotary table 160, so that the first carrier 1623 carries the needle seat needle tube into a group of pressure heads 1412. The bottom of the pressure head support 2606 is provided with a pressing plate 1413 on both sides of the pressing channel 1409 for sealing the pressure head 1412. The pressure head support 1406 corresponding to each pressing push rod groove is also provided with a pressing sealing plate for sealing the pressing push rod 1411.

[0072] To enable the vertical movement of the press-fit push rod 1411, a pressure plate 1405 is provided above the press head support 1406. The upper end of the press-fit push rod is fixed on the pressure plate 1405. The pressure plate 1405 is also provided with four vertically arranged press-fit guide columns 1414. The upper end of the press head support 1406 is provided with a press-fit guide groove between two adjacent press-fit push rod grooves, which slides in cooperation with the press-fit guide column 1414. A press-fit guide spring is also installed on the press-fit guide column 1414 to drive the press-fit push rod 1411 to reset.

[0073] The upper end of the pressure head bracket 1401 is provided with an upper pressure rod 1402. The middle part of the upper pressure rod 1402 is hinged to the pressure head bracket 1461. The end of the upper pressure rod 1402 near the first rotary table 160 is hinged to the pressure plate 1405 through an inner connecting rod 1404. The end of the upper pressure rod 1402 away from the first rotary table 160 is hinged to the lower pressure rod 1407 through an outer connecting rod 1403. The middle part of the lower pressure rod 1407 is hinged to the first frame 170. The end of the lower pressure rod 1407 near the first rotary table is provided with a roller 1410. The first frame 170 below the first rotary table 160 is provided with a drive shaft 1705. The drive shaft 1705 is provided with a cam 1408 that abuts against the roller 1410.

[0074] The drive shaft 1705 drives four cams 1408 to move synchronously. The cams 1408 drive the pressure plate 1405 and the pressing push rod 1411 to move vertically through the corresponding lower pressure rod 1407, outer connecting rod 1403, upper pressure rod 1402 and inner connecting rod 1404. The pressing push rod 1411 pushes the pressure head 1412 to squeeze the needle seat radially along the needle seat, so that the needle seat and the needle tube are riveted together to form a needle.

[0075] It also includes a sheath assembly device, and a shifting mechanism is provided between the sheath assembly device and the needle tube and needle seat assembly device to realize the automatic assembly of the injection needle. The needle tube and needle seat assembly device is used for riveting the needle tube and the needle seat. After riveting, the riveted needle is moved to the sheath assembly device through the shifting mechanism and assembled with the sheath in the sheath assembly device to form an injection needle.

[0076] The sheath assembly device can share a frame and drive mechanism with the needle tube and needle seat assembly device. Specifically, the drive mechanism includes a first drive motor 1701 and a first reducer 1702 disposed in the first frame 170. The output shaft of the first drive motor 1701 is connected to the input end of the first reducer 1702. The output end of the first reducer 1702 is connected to the drive shaft 1705 through a first transmission chain. The drive shaft 1705 is connected to the input end of the first indexer 1703 through a second transmission chain. The output end of the first indexer 1703 is connected to the first rotary table 160. The drive shaft 1705 is connected to the input end of the second indexer through a third transmission chain. The output end of the second indexer is connected to the second rotary table 460. The first reducer 1702 matches the rotational speed and transmits torque between the prime mover and the working machine or actuator, thereby realizing the synchronous movement of the sheath assembly device and the needle tube and needle seat assembly device.

[0077] In another embodiment, the sheath assembly device and the needle tube and needle hub assembly device can be separately configured.

[0078] The sheath assembly device has an independent frame and drive mechanism. The sheath assembly device includes a second frame 470, which is a box-type frame. A second drive mechanism is provided inside the second frame 470. The second drive mechanism includes a second drive motor and a second reducer installed inside the second frame 470. The output shaft of the second drive motor is connected to the input end of the second reducer. The output end of the second reducer is connected to the input end of the second indexer. A second rotary table is provided on the output end of the second indexer. Intermittent movement is achieved through the second indexer, so that the corresponding mechanisms can synchronously realize the corresponding assembly steps. Then, it is continuously fed to the next mechanism, and finally the sheath and needle are assembled to form an injection needle. The second frame 470 is equipped with a controller, which is a PLC or MCU controller. The controller receives sensor commands and sends action commands to the actuator. The sheath assembly device is used to assemble the needle and the sheath. The assembly process of the needle and the sheath includes at least defect detection, sheath feeding, sheath pressing, sheath inspection, and unloading. For any assembly step in the assembly process, a corresponding mechanism needs to be set up to realize the corresponding assembly step. That is, the sheath assembly device includes at least a defect detection mechanism 410, a sheath feeding mechanism 420, a sheath pressing mechanism 430, a sheath inspection mechanism, and an unloading mechanism 440. At the same time, in order to realize continuous assembly, the above-mentioned mechanisms are arranged in sequence around the frame around the second rotary table 460. During the intermittent movement of the second rotary table 460, each mechanism can realize the corresponding assembly step synchronously and can realize the entire assembly process continuously. To achieve the transfer of the sheath and the protective cap of the riveting needle machine, such as Figure 6 As shown, the output end of the second indexer is connected to the second rotary table 460. The second rotary table 460 is provided with several sets of second carriers 4601. Generally, one assembly step corresponds to one set of second carriers 4601. In this embodiment, the rotary table is provided with eight sets of second carriers 4601. The eight sets of second carriers 4601 are arranged in a ring near the edge of the second rotary table 411. Each set of second carriers 4601 includes at least four second carriers 4601. Any two adjacent second carriers 4601 in any set are equally spaced. The second carriers 4601 are mainly used for carrying and transferring the sheath. The second carriers 4601 are fixed on the second rotary table 460 and rotate intermittently with the second rotary table 460, transferring the sheath to the mechanism corresponding to the assembly step, and finally realizing the assembly of the riveting needle and the sheath. Finally, the injection needle passes through the feeding mechanism 440 to fill the empty space of the second carrier 4601, and then rotates to the displacement mechanism 500 for needle feeding, continuously and intermittently cycling. During the operation of the device, the second carrier 4601 intermittently advances from the position of the first group when it is in the stopped state to the position of the eighth group, and rotates continuously in a cycle. This embodiment describes in detail how each mechanism of the sheath assembly device completes the corresponding assembly steps in the assembly process, in conjunction with the corresponding specific mechanisms and the second carrier 4601 in the shutdown state. The defect detection mechanism 410 is mounted on the second frame 470 outside the second rotary table 460 corresponding to the second set of second carriers 4601. The defect detection mechanism 270 includes a defect detection bracket 4101, on which a vertical first defect detection guide rail is provided. A first defect detection slider is provided on the first defect detection guide rail. A defect detection upright plate 4105 is provided on the first defect detection slider. A horizontal second defect detection guide rail 4107 is provided on the second defect detection guide rail 4107. A second defect detection... The second slider for defect detection is equipped with a camera support. A camera 4108 is mounted on the lower end of the camera support, and a U-shaped fork 4106 is provided on the upper end of the camera support 4108. A horizontally arranged defect detection variable frequency motor 4103 is provided on the U-shaped fork 4106 corresponding to the position of the defect detection upright plate 4105. The main shaft of the defect detection variable frequency motor 4103 passes through the defect detection upright plate 4105. A rocker arm 4104 is provided on the main shaft. A rolling bearing is provided at the end of the rocker arm 4104, and the rolling bearing is embedded in the U-shaped fork 4106.

[0079] On the vertical side of the defect detection bracket 4101 near the defect detection support 4105, a vertically arranged defect detection screw is also provided. The two ends of the defect detection screw are mounted on the defect detection support 4101 through bearing seats. A defect detection nut sleeve 4102 is provided on the defect detection screw. The defect detection nut sleeve 4102 is fixedly connected to the first defect detection slider. By rotating the defect detection screw, the defect detection nut sleeve 4102 moves up and down on the defect detection screw, which drives the defect detection support 4105 to move up and down. This allows the distance between the camera 4108 and the riveting needle to be adjusted, so that the defect detection mechanism 410 can be adapted to riveting needles of different lengths.

[0080] A position sensor is provided on the defect detection stand plate 4105 on the side of the U-shaped fork 4106 near the defect detection bracket 4101. A sensing plate corresponding to the position sensor is provided on the side of the U-shaped fork. The position sensor controls the defect detection variable frequency motor 4103 to rotate in both directions. This allows the camera 4108 to reciprocate along the second defect detection guide rail 4107 within a certain distance to perform step detection on a set of riveting pins. At the same time, it prevents the rolling bearing at the end of the rocker arm 4104 from disengaging from or interfering with the U-shaped fork 4106.

[0081] The defect detection bracket 4101 below the camera 4108 is also provided with a lens 4110 that cooperates with the camera to improve the detection accuracy of the camera.

[0082] The defect detection bracket 4101 below the lens 4110 is also provided with a pair of defect detection clamping cylinders 4111 arranged radially and horizontally along the second rotary table 460. The pair of defect detection clamping cylinders 4111 are located on both sides of the riveting needle. The piston rod of the defect detection clamping cylinder 4111 is provided with a defect detection clamping plate 4112. The defect detection clamping plate 4112 is provided with a set of defect detection clamping grooves for clamping the needle seat and fixing the riveting needle.

[0083] After the camera 4108 takes a picture of the needle, it is transmitted to the display screen of the controller and compared with the picture stored in the computer. If the burr is large, the subsequent shifting mechanism 500 is instructed to stop the shifting mechanism 500 from moving the rivet needle with burrs. The burr needle is then picked up and removed by the scrap removal mechanism 450 as the second turntable 460 rotates.

[0084] In other embodiments, the upper end of the camera support 4108 is provided with a rack tangentially arranged along the second rotary table, and the defect detection bracket 4101 is provided with a horizontally arranged defect detection variable frequency motor 4103 corresponding to the position of the defect detection upright plate 4105. The main shaft of the defect detection variable frequency motor 4103 passes through the defect detection upright plate 4105, and a gear is provided on the main shaft, which meshes with the rack.

[0085] The defect detection mechanism can also employ other CCD vision inspection mechanisms.

[0086] A second set of defect detection mechanism 410 is provided on the second frame 470 outside the second turntable 460 corresponding to the second vehicle in the third group.

[0087] like Figure 26As shown, the sheath feeding mechanism 420 is mounted on the second frame 470 outside the second rotary table 460 corresponding to the second carrier 4601 in the fourth group. The sheath feeding mechanism 410 includes a sheath vibrating plate 4101, which adjusts the sheaths to feed them in the same state with the open end facing downwards. The sheath discharge end of the sheath vibrating plate 4101 is provided with an inclined sheath receiving plate 4106. The sheath receiving plate 4106 is provided with a set of sheath receiving grooves. The sheaths fall directly into the sheath receiving grooves along the inclined sheath discharge end. The sheath receiving plate 4106 is mounted on the sheath slider 4103, which slides. The first sheath feeding cylinder 4101 is provided below the sheath vibrating plate 4101 and mounted on the first sheath guide rail 4104. The piston rod of the first sheath feeding cylinder 4101 is connected to the sheath receiving plate 4106. The sheath discharge end of the sheath vibrating plate 4101 is provided with a sheath cylinder bracket. A set of sheath blocking cylinders 4105 are provided on the sheath cylinder bracket. The piston rod of the sheath blocking cylinder 4105 can be inserted into the sheath. When the sheath on the sheath receiving plate 4106 moves along the first sheath guide rail 4104, the sheath at the discharge end of the sheath is restricted to the sheath vibrating plate 4101 by the sheath blocking cylinder 4105 to prevent the sheath from falling.

[0088] A sheath support 4114 is provided on one side of the sheath vibratory feeder 4101. A sheath horizontal plate 4111 is provided on the sheath support 4114. A second sheath guide rail 4107 is provided on the sheath horizontal plate 4111, which is radially arranged along the second rotary table 411. A sheath vertical plate 4110 is provided on the second sheath guide rail 4107, which is in sliding fit. A second sheath feeding cylinder 4108 is also provided at the upper end of the sheath horizontal plate 4111, which is parallel to the second sheath guide rail 4107. The piston rod of 108 is connected to the sheath upright plate 4110. The sheath upright plate 4110 is provided with a vertically arranged sheath lifting guide rail. The sheath lifting guide rail is provided with a slidingly fitted sheath lifting bracket 4112. The sheath lifting bracket 4112 is provided with a set of sheath finger clamping cylinders 4113. The sheath lifting cylinder 4109 is provided on the sheath upright plate 4110 at the upper end of the sheath lifting guide rail. The piston rod of the sheath lifting cylinder 4109 is connected to the sheath lifting bracket 4112.

[0089] After the sheath falls onto the sheath receiving plate 4106, the first sheath feeding cylinder 4101 pushes the sheath receiving plate 4106 to a predetermined position near the second rotary table 411. The sheath clamping cylinder 4113 moves to above the sheath receiving plate 4106, then removes and lifts the sheath, and then pushes it above the second carrier 412 through the second sheath feeding cylinder 4108. Then the sheath lifting cylinder 4109 descends, the sheath clamping cylinder 4113 places the sheath on the second carrier 412, and then the sheath lifting cylinder 4109 lifts it.

[0090] The sheath vibratory feeder can adopt the vibratory feeder structure of the safety syringe needle seat feeding device disclosed in CN217894276U, or the vibratory feeder for directional sorting and conveying of injection needle seats disclosed in CN112093428A, or the vibratory feeder structure of an automatic directional feeding machine for blood collection needle hard seats disclosed in CN105109931A, as long as the structure of the material channel matches the shape of the sheath; In another embodiment, the sheath feeding mechanism 420 is mounted on the second frame 470 outside the second rotary table 460 corresponding to the fourth group of second carriers 4601. The sheath feeding mechanism 420 includes a sheath vibratory feeder 4201, which adjusts the sheaths to feed them in the same state with the open end facing upwards. A sheath feeding upright plate 4206 is provided on the sheath vibratory feeder bracket 4213 below the sheath discharge end of the sheath vibratory feeder 4201. The sheath feeding upright plate 4206 is provided with a flipping bracket 4205, which is rotatably mounted on the sheath feeding upright plate 4206 via a rotating shaft. A gear 4217 is provided at one end of the rotating shaft, and a rack 4218 is provided on the side of the sheath feeding upright plate 4206 corresponding to the gear 4217. A tilting cylinder 4216 is also provided on the side of the sheath feeding plate 4206 corresponding to one end of 8. The piston rod of the tilting cylinder 4216 is connected to the rack 4218, and the rack 4218 meshes with the gear 4217. A set of sheath receiving grooves is provided on the side of the tilting bracket 4205 near the sheath discharge end. The sheath receiving groove is an open-shaped contour groove that can accommodate three sides of the sheath. The outer edge of the sheath and the port of the sheath receiving groove form a positioning fit, so that the sheath can be placed vertically in the sheath receiving groove. Then, the tilting cylinder 4216 is activated, and the tilting bracket 4205 is tilted at a certain angle. The tilting bracket 4205 is in an inclined state and the open end of the sheath 10 is tilted downward. The sheath 10 can slide freely out of the sheath receiving groove.

[0091] Below the flipping bracket 4205 is a liftable sheath receiving plate 4207. The sheath receiving plate 4207 has a set of sheath receiving channels penetrating the main body. The flipping bracket 4205 flips from the sheath discharge end to the upper end of the sheath receiving plate 4207, so that the sheath receiving groove and the sheath receiving channel are connected one-to-one. The sheath slides directly from the sheath receiving groove into the sheath receiving channel, and the sheath 10 flips from a horizontal state to a vertical state. The sheath loading plate 4206... A sheath feeding side plate is also provided on one side of the sheath vibratory feeder support. A receiving cylinder 4615 is provided on the side of the sheath feeding side plate away from the sheath feeding upright plate. A receiving guide rail is provided on the side of the sheath feeding side plate close to the sheath feeding upright plate 4206. A receiving slider is provided on the receiving guide rail. A sheath receiving plate 4207 is provided on the receiving slider. The side of the sheath receiving plate 4207 close to the second rotary table 460 is connected to the piston rod of the receiving cylinder 4212 through a connector.

[0092] Below the sheath receiving plate 4207, there is a rotating bracket 4215. The rotating bracket 4215 has two sets of ejector pins 4214. One set of ejector pins 4214 is connected to the sheath receiving channel one-to-one, and the other set of ejector pins 4214 is close to the second rotary table 460. The rotating bracket 4215 is mounted on the rotary cylinder 4210, which is mounted on the sheath vibrating plate bracket 4213. After the sheath 10 falls from the sheath receiving channel onto the ejector pins 4214, the sheath receiving plate 4207 is lifted by the receiving cylinder 4212, so that the sheath receiving plate 4207 is above the rotating bracket 4215 to avoid interference between the sheath receiving plate 4207 and the rotating bracket 4215. At this time, the rotating bracket 4215 rotates 180 degrees, so that the sheath 10 is close to the second rotary table 460, which facilitates the feeding of the sheath.

[0093] A sheath support is provided on one side of the vibratory feeder 4201. A sheath horizontal plate is provided on the sheath support. A sheath guide rail is provided on the sheath horizontal plate and radially arranged along the second rotary table. A sheath vertical plate is provided on the sheath guide rail. A sheath feeding cylinder is also provided at the upper end of the sheath horizontal plate and is arranged parallel to the sheath guide rail. The piston rod of the sheath feeding cylinder is connected to the sheath vertical plate. A vertically arranged sheath lifting guide rail is provided on the sheath lifting guide rail. A suction tube bracket is provided on the sheath lifting guide rail and a set of suction tubes is provided on the suction tube bracket. A sheath lifting cylinder is provided on the sheath vertical plate at the upper end of the sheath lifting guide rail. The piston rod of the sheath lifting cylinder is connected to the suction tube bracket.

[0094] The suction tube moves above the sheath of the rotating bracket, then the sheath is lifted and pushed above the second carrier 460 by the sheath feeding cylinder. Then the sheath lifting cylinder descends, the suction tube places the sheath on the needle head, and then the sheath lifting cylinder lifts.

[0095] To ensure the sheath can be stably placed on the needle 20, a positioning bracket 4208 is provided on the sheath vibratory plate bracket 4213 near the second rotary plate 460. The positioning bracket 4208 is located on one side of the rotating bracket 4215, and a first positioning cylinder 4211 is provided on the positioning bracket 4208. The piston rod of the first positioning cylinder 4211 faces the second rotary plate 460, and a positioning clamp is connected to the piston rod. The positioning clamp has a set of openings facing the second rotary plate 460. The positioning bracket 4208 is also provided with a second positioning cylinder 4209. The piston rod of the second positioning cylinder 4209 faces the sheath feeding mechanism 400. A positioning clamp is connected to the piston rod. The positioning clamp has a set of V-shaped grooves with openings facing the sheath feeding mechanism 400. When the sheath 10 is placed on the needle 20, the positioning clamps on both sides are clamped on the outside of the sheath 10 by the two sides of the sheath 10, so that the sheath 10 can be stably placed on the needle 20.

[0096] A baffle bracket is provided above the discharge end of the sheath vibrating plate 4201. A baffle cylinder 4204 is provided on the baffle bracket. The piston rod of the baffle cylinder 4204 can be inserted into the sheath 10 to restrict the sheath 10 to the discharge end of the sheath vibrating plate 4201. A limiting cylinder 4202 is also provided on the protective plate of the sheath vibrating plate 4201 above the baffle bracket. A limiting plate 4203 is provided on the piston rod of the limiting cylinder 4202. The limiting plate 4203 can restrict the falling of the sheath.

[0097] The sheath vibratory feeder can adopt the vibratory feeder structure of the safety syringe needle seat feeding device disclosed in CN217894276U, or the vibratory feeder for directional sorting and conveying of injection needle seats disclosed in CN112093428A, or the vibratory feeder structure of an automatic directional feeding machine for blood collection needle hard seats disclosed in CN105109931A, as long as the structure of the material channel matches the shape of the sheath; The sheath pressing mechanism 430 is installed on the second frame 470 outside the second rotary table 460 corresponding to the second carrier 4601 of the fifth group. The sheath pressing mechanism 430 includes a sheath pressing bracket 4304. The sheath pressing bracket 4304 is provided with a vertically arranged sheath pressing cylinder 4301. The piston rod of the sheath pressing cylinder 4301 is provided with a set of sheath pressing plates 4302. The sheath pressing plates 4302 are provided with a set of vertically downward arranged sheath pressing holes. The sheath pressing holes can be fitted onto the end of the sheath 10.

[0098] A pair of first positioning cylinders 4303 and second positioning cylinders 4308 are also provided on the sheath pressing bracket 4304, which are radially arranged along the second rotary table 460. The piston rod of the first positioning cylinder 4303 faces the second rotary table, and a first positioning clamping plate 4306 is connected to the piston rod. The first positioning clamping plate 4306 has a set of V-shaped grooves with openings facing the second rotary table 460. The piston rod of the second positioning cylinder 4308 faces the sheath feeding mechanism, and a second positioning clamping plate 4307 is connected to the piston rod. The second positioning clamping plate 4307 has a set of V-shaped grooves with openings facing the sheath feeding mechanism. When the sheath 10 is placed on the needle 20, the positioning clamping plates on both sides are clamped on the outside of the sheath 10 by the two sides of the sheath 10, so that the sheath 10 can be stably placed on the needle 20.

[0099] A sheath drive cylinder 4311 is also provided on the sheath pressing bracket 4304 corresponding to the lower end of the sheath 10, arranged along the tangent direction of the second rotary table. A sheath side pressure bracket 4305 is provided on the piston rod of the sheath drive cylinder 4311. A sheath side pressure cylinder 4312 is provided on the sheath side pressure bracket 4305, arranged radially along the second rotary table. A side pressure plate 4309 is provided on the piston rod of the sheath side pressure cylinder 4312. The side pressure plate 4309 has a resin material layer 4310. The radially arranged sheath drive cylinder 4311... In conjunction with the sheath side pressure cylinder 4312, the side pressure plate 4309 presses against the side of the sheath while moving radially. This causes the side pressure plate 4309 to rub radially against the side of the sheath, causing the sheath 10 to rotate on the needle 20 while being pressed up and down. This causes the four slots of the sheath 10 to correspond one-to-one with the snap-fit ​​edges on the needle seat. Then, under the action of the sheath pressing cylinder, the sheath and the needle seat are stably snapped together, pressing the sheath onto the needle head, completing the assembly of the needle head and the sheath, and forming a stable connection.

[0100] The feeding mechanism 440 is mounted on the second frame 470 outside the second rotary table 460 corresponding to the second carrier 4601 in the sixth group. The feeding mechanism includes a feeding bracket, a feeding horizontal plate on the feeding bracket, a feeding guide rail arranged radially along the second rotary table on the feeding horizontal plate, a feeding vertical plate with sliding fit on the feeding guide rail, a feeding cylinder arranged parallel to the guide rail at the upper end of the feeding horizontal plate, the piston rod of the feeding cylinder being connected to the feeding vertical plate, a vertically arranged feeding lifting guide rail on the feeding vertical plate, a feeding lifting bracket with sliding fit on the feeding lifting guide rail, a set of feeding clamping finger cylinders on the feeding lifting bracket, a feeding lifting cylinder on the feeding vertical plate at the upper end of the feeding lifting guide rail, and the piston rod of the feeding lifting cylinder being connected to the feeding lifting bracket.

[0101] An inclined receiving hopper is also provided on the second frame 460 outside the feeding mechanism 440. Driven by the feeding cylinder, the feeding clamp cylinder moves to above the second carrier 4601, then takes out the injection needle and lifts it, then pushes it above the receiving hopper through the feeding cylinder, then the feeding lifting cylinder descends, the feeding clamp cylinder places the injection needle in the receiving hopper, and then the feeding lifting cylinder lifts it to complete the feeding. At both ends of the feeding guide rail, corresponding to the feeding horizontal plate, feeding photoelectric sensors are respectively provided to cooperate with the feeding vertical plate to control the action of the feeding cylinder; like Figure 25 As shown, the rejection mechanism 450 is mounted on the second frame 470 outside the second rotary table 460 corresponding to the first carrier 4601 in the seventh group. The rejection mechanism includes a rejection bracket, a rejection cross plate, a horizontal rejection guide rail, a rejection slider, a rejection moving plate, and a rejection cylinder arranged parallel to the rejection guide rail on the rejection cross plate. The piston rod of the rejection cylinder is connected to the rejection moving plate, and a vertically arranged rejection bar is mounted on the rejection moving plate. In addition to the lifting guide rail, the rejection lifting guide rail is provided with a slidingly fitted rejection cylinder support. The rejection cylinder support is provided with a set of rejection finger-clamping cylinders. The rejection lifting cylinder is provided on the rejection moving plate at the upper end of the rejection lifting guide rail. The piston rod of the rejection lifting cylinder is connected to the rejection cylinder support through a hinge rod. A waste box is provided on the outer side of the second rotary table 460 below the rejection mechanism 450. The rejection mechanism rejects the defective injection needle into the waste box, so that the second carrier 4601 forms an empty space, and then performs intermittent rotary cycles. In another embodiment, the rejection mechanism 450 may also use a robotic arm with a rejection finger-clamping cylinder for unloading. The robotic arm removes the rivet pin from the second carrier 4601. The robotic arm moves the rejection finger-clamping cylinder above the waste box, and then the rejection finger-clamping cylinder opens and the rivet pin automatically falls into the waste box. At both ends of the rejection guide rail, rejection photoelectric sensors are respectively provided on the rejection cross plates, which cooperate with the rejection moving plates to control the movement of the rejection cylinder.

[0102] The sheath assembly device 400 and the needle tube and needle hub assembly device 100 transfer the needle tip through the shifting mechanism 500.

[0103] like Figure 23-24 As shown, the shifting mechanism 500 is mounted on the second frame 470 outside the second rotary table 460 corresponding to the first group of second carriers 4601. The shifting mechanism 500 includes a shifting bracket 5007, which is provided with a shifting cross plate. The shifting cross plate is provided with a horizontal shifting guide rail 5004. The shifting guide rail 5004 is provided with a shifting slider. The shifting slider is provided with a shifting plate 5002. The shifting cross plate is provided with a shifting cylinder 5005 arranged parallel to the shifting guide rail 5004. The piston rod of the shifting cylinder 5005 is connected to the shifting plate 5002. The shifting plate 5002 is provided with a vertical... The system includes a shifting and lifting guide rail 5003, which is equipped with a slidingly fitted shifting cylinder support 5006. The shifting cylinder support 5006 is equipped with two sets of shifting finger clamping cylinders 5008. The shifting plate 5002 at the upper end of the shifting and lifting guide rail 5003 is equipped with a shifting and lifting cylinder 5001. The piston rod of the shifting and lifting cylinder 5001 is connected to the shifting cylinder support 5006 through a hinge. The shifting bracket is equipped with a set of transition carriers. The shifting mechanism moves the needle of the first rotary table 460 to the transition carrier, and then the transition carrier moves the needle to the second rotary table 460.

[0104] In one embodiment, one set consists of a shifting finger cylinder and the other set consists of a shifting claw cylinder and claws. A pair of claws are symmetrically arranged, and a pair of open claw grooves are respectively provided on a pair of close inner surfaces of the claws. The pair of claw grooves clamp the needle seat from both sides of the needle seat.

[0105] When the displacement cylinder 5005 is in the retracted state, a set of displacement gripping cylinders 5008 are located above the first rotary table 211. A displacement lifting cylinder 2807 drives the displacement cylinder support 5006 to rest on the first carrier 1623 of the first rotary table 160. Then, the displacement gripping cylinders 5008 grip the needle from the first carrier 1623. The displacement lifting cylinder 5001 then lifts the needle off the first carrier 1623. When the 5005 movement forms a telescopic state, it drives the shift plate 5002 to move the shifting finger-clamping cylinder 5008 to a set of transition carriers. At the same time, another set of finger-clamping cylinders moves the needle on the transition carrier to above the second carrier 4601 of the second rotary table 460. Then, the shift lifting cylinder 5001 drives the shift cylinder support 5006 to descend. Then, the two sets of shifting finger-clamping cylinders 5008 are respectively above the transition carrier and the second carrier 4601 of the second rotary table 460, and place the needle on the transition carrier and the second carrier 4601.

[0106] A silicone oil application mechanism 600 is also provided on the second frame 470 between the two sets of shifting finger cylinders 5008. The silicone oil application mechanism 600 includes an indexer 6002. The input end of the indexer 6002 is provided with a pulley. A drive motor 6001 is provided on the second frame 470 on one side of the indexer. The output shaft of the drive motor 6001 is provided with a pulley, and two pulleys are provided with a transmission belt. A power rotary head 6005 is installed at the output end of the indexer 6002. The power rotary head 6005 has at least four platforms arranged in a ring around the axis. Each platform is provided with a guide rail arranged parallel to the axis. A slider is provided on the guide rail. A clamping plate 600 is provided on the side of the slider away from the power rotary head. 4. The card plate 6004 has several equally spaced slots on one side parallel to the axis. Each slot includes at least a first opening on the side and a first latch connected to the first opening. The first opening allows the needle holder to be placed or removed arbitrarily along the axis of the needle holder. The first latch can be locked onto the outer edge of the needle holder. The needle holder can be restricted to the card plate 6004 through the first latch. A silicone oil carrier 6006 is provided on the platform below each slot. The needle holder of the needle is placed on the silicone oil carrier 6006 below through the first opening by the moving mechanism. Then the card plate 6005 moves along the guide rail so that the first latch is locked onto the outer edge of the needle holder.

[0107] The needle is placed on the silicone oil carrier 6006 via a shifting mechanism. Between the two sets of shifting finger cylinders of the shifting mechanism 500, there is also a set of shifting claw cylinders. In this way, the needle moves from the first carrier to the transition carrier, then from the transition carrier to the second carrier of the silicone oil mechanism, and then from the silicone oil carrier of the silicone oil mechanism to the second carrier.

[0108] Each slider is provided with a push rod on the side near the indexer. A bearing 6003 is provided on the highest position of the flange of the indexer 6002 in the Z-axis direction, corresponding to the push rod. The push rod makes rotational contact with the outer surface of the bearing 6003 during rotation.

[0109] A return spring is provided on the platform at the lower end of each slider. One end of the return spring is connected to the slider, and the other end is fixed on the platform. When the corresponding push rod contacts the bearing, the bearing abuts against the push rod and pushes the clamping plate 6004 to move along the guide rail, so that the first opening on the clamping plate 6004 is located directly above the upper silicone oil carrier 6006. The needle is placed into the upper silicone oil carrier 6006 through the first opening via the moving mechanism. The outline of the first opening is adapted to the needle seat and is larger than the outer outline of the needle seat, so that the needle seat can be freely placed into the needle seat through the first opening. After the corresponding push rod separates from the bearing, the clamping plate moves in the opposite direction along the guide rail under the action of the return spring, so that the first clamping slot is engaged with the outer edge of the needle seat, limiting the needle seat, and causing the needle to rotate with the power rotor 6005.

[0110] Below the power rotary head, there is a lifting oil tank 7001. The second frame has an oil tank hole 700. The oil tank hole 700 has an oil tank support 7002 arranged along the Z-axis. The oil tank support 7002 has an oil tank guide rail arranged along the Z-axis. The oil tank guide rail has an oil tank slider. The oil tank slider is fixed to the lifting oil tank 7001. The bottom of the second frame on one side of the lifting oil tank 7001 has an oil tank motor 7004. The drive shaft of the oil tank motor 7004 has a rocker arm 7003. The rocker arm 7003 is hinged to the oil tank slider.

[0111] When the needle tip rotates to the lowest position with the power rotor, the lifting oil groove 7001 rises to the highest position, allowing the needle tip of the injection needle to be inserted into the lifting oil groove 7001 for silicone oil application. Then, as the needle tip rotates mechanically with the power rotor, the lifting oil groove falls to prevent interference with the injection needle.

[0112] Because the needle tube and needle hub assembly device 100 and the sheath assembly device 400 are separated from each other, the first carrier 1623 and the second carrier 4601 have a positional difference in the vertical direction, that is, the first carrier 1623 and the second carrier 4601 are not on the same horizontal plane. In order to realize the transfer of the needle between the needle tube and needle hub assembly device and the sheath assembly device, the first frame is provided with a transition transfer mechanism 200 on the side near the shifting mechanism. The transition transfer mechanism 200 includes a pair of transmission pulleys 2001, which are rotatably mounted on the first frame 17. On the first frame 170, the drive shafts of a pair of drive pulleys 2001 are vertically mounted. The pair of drive pulleys 2001 are connected by a drive belt 2002. The drive belt 2002 is provided with a plurality of guide rails 2003. The guide rails 2003 are arranged on the outer surface of the drive belt 2002 and are arranged in a vertical direction. Each guide rail 2003 is provided with a slider 2004. Each slider 2004 has a protruding column 2006 on the side away from the guide rail 2003. A carrier 2007 is also provided on the upper side of each slider 2004.

[0113] The slider 2004 is located at the lower end of the guide rail 2003 under its own weight. The slider 2004 is driven by a driving device to rise along the guide rail 2003 to the height of the first carrier 1623 in the needle tube and needle seat assembly device. The driving device includes a driving cylinder 2009, which is located at the bottom of the first frame. The first frame has a through hole. The piston rod of the driving cylinder 2009 extends through the through hole to the bottom of the column. The end of the piston rod is also provided with a push plate 2008. The push plate 2008 can push several columns 2006 at a time to raise the slider 2004 along the guide rail 2003 to the height of the driving cylinder stroke.

[0114] A gripping mechanism 300 is further provided between the transition transfer mechanism 200 and the first carrier of the eighth group. The gripping mechanism includes a gripping bracket 3004, a gripping crossbar, a horizontal gripping guide rail 3008, a gripping slider on the guide rail 3008, a gripping transfer plate 3003 on the slider, and a gripping cylinder 3002 arranged parallel to the guide rail 3008 on the crossbar. The piston rod of the cylinder 3002 is connected to the transfer plate 3003, and a vertically arranged gripping lifting mechanism is provided on the transfer plate 3003. The lifting guide rail 3007 is equipped with a slidingly fitted gripping cylinder support 3005. The gripping cylinder support 3005 is equipped with a gripping finger cylinder 3006. The gripping lifting plate 3003 at the upper end of the gripping lifting guide rail 3007 is equipped with a gripping lifting cylinder 3001. The piston rod of the gripping lifting cylinder 3001 is connected to the gripping cylinder support 3005 through a hinge. The gripping mechanism moves the needle of the first rotary table 160 to the transition transmission mechanism 200, and then moves the needle of the transition transmission mechanism 200 to the second rotary table 460 through the displacement mechanism 500.

[0115] Assembly method of embedded injection needle: S1: The needle holder is installed on the first carrier through the needle holder feeding mechanism and rotated and transferred through the first rotary table; S2: Install the needle tube onto the needle holder via the needle tube feeding mechanism; S3: The needle tube and the needle seat are riveted together on a first carrier having the needle tube and the needle seat by a pressing mechanism; S4: Remove the riveted needle from the first carrier of the first rotary table and install it on the second carrier of the second rotary table, and then rotate and transfer the needle through the second rotary table.

[0116] S5: Install the sheath onto the needle head using the sheath feeding mechanism. S6: The sheath is assembled on the needle head to form an injection needle by a sheath pressing mechanism.

[0117] S7: The injection needle is moved from the second carrier to the receiving hopper by the feeding mechanism.

[0118] Furthermore, before step S1, the protective seat of the first carrier is lifted axially from the base of the first carrier by the carrier lifting mechanism, and the protective seat is lifted to the annular support platform and rotates along the annular support platform with the first rotary table to receive the needle seat in step S1. Furthermore, after step S2, the needle detection mechanism determines whether there is a needle on the first carrier and feeds the information back to the controller, which then controls the action of the pressing mechanism. Furthermore, before step S3, the carrier pressing mechanism presses against the protective seat of the first carrier to ensure that the protective seat is completely separated from the needle hub, so that the protective seat returns to the initial position of the first carrier, which facilitates the riveting of the needle hub and the needle tube. Furthermore, in step S3, the transmission shaft drives four cams to move synchronously. The cams drive the pressure plate and the pressing push rod to move vertically through the corresponding lower pressure rod, outer connecting rod, upper pressure rod, and inner connecting rod. The pressing push rod pushes the pressure head to squeeze the needle seat radially along the needle seat, so that the needle seat and the needle tube are riveted together to form a needle. Furthermore, before step S5, after the defect detection mechanism takes a picture of the needle through its camera and transmits it to the display screen of the controller, it is compared with the picture stored in the computer. If the burr is large, an instruction is sent to the subsequent shifting mechanism so that the rejection mechanism does not reject the rivet needle with burrs. Furthermore, in step S4, the needle can be moved from the first rotary table to the transition carrier and the transition carrier can be moved to the second carrier on the second rotary table in one operation of the shifting cylinder.

[0119] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automated assembly device for embedding injection needles, characterized in that, include: Needle tube and needle hub assembly device and sheath assembly device; The needle tube and needle hub assembly device includes at least a drive mechanism, a first conveyor line, and a needle hub feeding mechanism, a needle tube feeding mechanism, and a pressing mechanism arranged sequentially along the conveying direction of the first conveyor line. The first conveyor line is provided with several sets of first carriers, which are evenly arranged on the first conveyor line to transfer the needle seat according to the needle seat and needle tube riveting steps; The needle holder feeding mechanism installs the needle holder onto the first carrier; The needle feeding mechanism assembles the needle onto the needle holder; The pressing mechanism rivets the needle seat and the needle tube to form a needle tip; The sheath assembly device includes at least a second conveyor line and a sheath feeding mechanism, a sheath pressing mechanism, and a discharging mechanism arranged sequentially along the conveying direction of the second conveyor line. The second conveyor line is equipped with several sets of second carriers, which are evenly arranged on the second conveyor line to transfer the needles according to the assembly steps of the needles and caps; The sheath feeding mechanism installs the sheath onto the needle head; The sheath pressing mechanism presses the sheath onto the needle; The feeding mechanism removes the assembled injection needle from the second carrier; It also includes a shifting mechanism, which is disposed between the needle tube and needle hub assembly device and the sheath assembly device, to move the riveted needle from the first carrier to the second carrier; It also includes a controller that receives feedback information and issues action commands to the prime mover and the working machine or actuator.

2. The automatic assembly device for embedding injection needles according to claim 1, characterized in that, The driving mechanism includes a drive motor and a reducer. The output shaft of the drive motor is connected to the input end of the reducer. The output end of the reducer is connected to a drive shaft through a first transmission chain. The drive shaft is connected to the input end of a first conveyor chain through a second transmission chain. The output end of the first indexer is connected to a first conveyor line. The drive shaft is connected to the input end of a second indexer through a third transmission chain. The output end of the second indexer is connected to a second conveyor line.

3. The automatic assembly device for embedding injection needles according to claim 1, characterized in that, Below the shifting mechanism is a silicone oil application mechanism, which includes an indexer. The input end of the indexer is equipped with a pulley, and a drive motor is located on one side of the indexer. The output shaft of the drive motor is equipped with a pulley, and two pulleys are equipped with a transmission belt. The output end of the indexer is equipped with a power rotor. The power rotor has at least four platforms arranged in a ring around the axis. Each platform is equipped with a guide rail arranged parallel to the axis. The guide rail is equipped with a slider. A locking plate is located on the side of the slider away from the power rotor. Several equally spaced slots are opened on a side of the locking plate parallel to the axis. Each slot includes at least a first opening on the side and a first locking slot connected to the first opening. A silicone oil application carrier is provided on the platform below each slot. The needle is placed on the upper silicone oil carrier through a shifting mechanism, and a shifting claw cylinder is also provided between the two sets of shifting finger cylinders of the shifting mechanism; Each slider is provided with a push rod on the side near the indexer. In the vertical direction, a bearing is provided on the highest position of the flange of the indexer corresponding to the push rod. During the rotation, the push rod makes rotational contact with the outer surface of the bearing. A return spring is provided on the platform at the lower end of each slider. One end of the return spring is connected to the slider, and the other end is fixed on the platform.

4. The automatic assembly device for embedding injection needles according to claim 3, characterized in that, Below the power rotor, there is an oil tank support, an oil tank guide rail, an oil tank slider, a lifting oil tank, an oil tank motor, a rocker arm on the drive shaft of the oil tank motor, and the rocker arm is hinged to the oil tank slider.

5. The automatic assembly device for embedding injection needles according to claim 1, characterized in that, A transition transfer mechanism is provided on one side of the displacement mechanism near the needle tube and needle seat assembly device. The transition transfer mechanism includes a pair of drive pulleys connected by a drive belt. The drive belt is provided with a plurality of transition transfer guides. Each transition transfer guide is provided with a transition transfer slider. Each transition transfer slider has a protruding column on its side away from the transition transfer guide. A first carrier is also provided on the upper side of each transition transfer slider. It also includes a drive cylinder, the piston rod of which extends below the column, and the end of the piston rod is provided with a push plate, which can push several of the columns at once to make the transition transfer slider rise along the transition transfer guide rail.

6. The automatic assembly device for embedding injection needles according to claim 5, characterized in that, A gripping mechanism is also provided between the transition transfer mechanism and the first conveyor line. The gripping mechanism includes a gripping bracket, a gripping horizontal plate, a horizontal gripping guide rail, a gripping slider, a gripping shift plate, a gripping cylinder parallel to the gripping guide rail on the gripping horizontal plate, a piston rod of the gripping cylinder connected to the gripping shift plate, a vertically arranged gripping lifting guide rail on the gripping lifting guide rail, a gripping cylinder support with sliding fit on the gripping cylinder support, a gripping finger cylinder on the gripping cylinder support, and a gripping lifting cylinder on the gripping shift plate at the upper end of the gripping lifting guide rail. The piston rod of the gripping lifting cylinder is connected to the gripping cylinder support via a hinge.

7. The automatic assembly device for embedding injection needles according to claim 1, characterized in that, The sheath assembly device also includes a defect detection mechanism, which is located on one side of the second conveyor line above the sheath feeding mechanism.

8. The automatic assembly device for embedding injection needles according to claim 7, characterized in that, The defect detection mechanism includes a defect detection bracket, a vertical first defect detection guide rail on the defect detection bracket, a first defect detection slider on the first defect detection guide rail, a defect detection upright plate on the first defect detection slider, a horizontal second defect detection guide rail on the defect detection upright plate, a second defect detection slider on the second defect detection guide rail, a camera support on the second defect detection slider, a camera mounted at the lower end of the camera support, a rack at the upper end of the camera support, a horizontally arranged defect detection variable frequency motor on the defect detection bracket corresponding to the position of the defect detection upright plate, the main shaft of the defect detection variable frequency motor passing through the defect detection upright plate, and a gear on the main shaft meshing with the rack. On the defect detection bracket on the vertical side of the defect detection stand plate near the defect detection support, a vertically arranged defect detection screw is also provided. The two ends of the defect detection screw are mounted on the defect detection support through bearing seats. A defect detection nut sleeve is provided on the defect detection screw. The defect detection nut sleeve is fixedly connected to the first defect detection slider. The defect detection bracket below the camera is also equipped with a lens that works in conjunction with the camera.

9. An automatic assembly device for embedding injection needles according to any one of claims 1-8, characterized in that, The needle feeding mechanism includes a needle support, a needle support plate on the needle support, and a needle feeding groove on the needle support plate. The needle feeding groove is W-shaped, and a needle roller is provided at each of the two bottoms of the W-shaped needle feeding groove. A variable frequency motor is provided on the needle support plate at the end of each needle roller furthest from the center of the rotary table. Each variable frequency motor is connected to one end of the corresponding needle roller through a set of transmission gears. A set of annularly arranged grooves is provided on the outer circumferential surface of both needle rollers to accommodate needles. A through groove is provided, corresponding to each of the two rollers. A hinged needle tube baffle is provided in the through groove. A first needle tube cylinder is provided on the outside of the needle tube support plate. The piston rod of the first needle tube cylinder extends from the outside of the through groove into the through groove and is hinged to the needle tube baffle. A needle tube guide plate is provided at the bottom of the through groove. The needle tube guide plate has a wedge-shaped guide side. The guide side and an inner side of the through groove form a wedge-shaped needle tube guide groove. The outlet of the needle tube guide groove is connected to the through hole of the upper connecting plate corresponding to the third needle tube guide pressing mechanism.

10. An automatic assembly device for embedding injection needles according to claims 1-8, characterized in that, The sheath pressing mechanism includes a sheath pressing bracket, on which a vertically arranged sheath pressing cylinder is provided. A set of sheath pressing plates is provided on the piston rod of the sheath pressing cylinder. A set of vertically downward-arranged sheath pressing holes is provided on the sheath pressing plates. The sheath pressing holes can be fitted onto the end of the sheath. The sheath pressing bracket is also equipped with a pair of first positioning cylinders and second positioning cylinders. A positioning clamp is connected to the piston rod of the first positioning cylinder. The positioning clamp is provided with a set of V-shaped grooves with openings facing the second conveyor line. A positioning clamp is connected to the piston rod of the second positioning cylinder. The positioning clamp is provided with a set of V-shaped grooves with openings facing the sheath feeding mechanism. On the sheath pressing bracket corresponding to the lower end of the sheath, there is also a sheath driving cylinder arranged in the opposite direction of the second conveying line. The piston rod of the sheath driving cylinder is provided with a sheath side pressure bracket. The sheath side pressure bracket is provided with a sheath side pressure cylinder arranged in the radial direction of the second conveying line. The piston rod of the sheath side pressure cylinder is provided with a side pressure plate. The side pressure plate is provided with a layer of resin material.

11. An automated assembly method for embedding injection needles, characterized in that, Includes the following steps: By applying the automated assembly apparatus for an inlaid injection needle according to any one of claims 1-10 to the automated assembly method of the inlaid injection needle: S1: The needle holder is installed on the first carrier through the needle holder feeding mechanism and rotated and transferred through the first rotary table; S2: Install the needle tube onto the needle holder via the needle tube feeding mechanism; S3: The needle tube and the needle seat are riveted together on a first carrier having the needle tube and the needle seat by a pressing mechanism; S4: Remove the riveted needle from the first carrier of the first rotary table and install it on the second carrier of the second rotary table, and then rotate and transfer the needle through the second rotary table; S5: Install the sheath onto the needle head using the sheath feeding mechanism; S6: The sheath is assembled onto the needle head to form an injection needle by a sheath pressing mechanism; S7: The injection needle is moved from the second carrier to the receiving hopper by the feeding mechanism.

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