A needle sticking machine with a sheath assembly

Abstract

The present application provides a kind of sheath assembly device for needle sticking machine, it is related to medical instrument production equipment technical field, sheath assembly device for needle sticking machine includes workbench, workbench is sequentially provided with sheath feeding mechanism, sheath pressing mechanism, unloading mechanism, the export end of sheath feeding mechanism is provided with sheath material separation blocking mechanism;The front of sheath material separation blocking mechanism is provided with sheath turnover mechanism, the lower portion of sheath turnover mechanism is provided with mould, workbench is provided with the push-out air cylinder corresponding with the position of mould;The unloading mechanism of the sheath assembly device for needle sticking machine of the present application is provided with spring instantaneous mechanism, when two unloading clamping units are opposite and move loose needle cylinder, spring instantaneous mechanism is still clamped needle cylinder, can guarantee that needle cylinder is completely separated from unloading clamping unit, avoid the situation that needle cylinder is stuck on the clamping claw of unloading clamping unit and moves synchronously with clamping claw when unloading, and does not fall and lead to unloading incomplete, guarantee the normal work of needle sticking machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical instrument production equipment, more particularly to a sheath assembling device for a needle sticking machine. BACKGROUND

[0002] Disposable syringes have been widely used in medical systems, and in use of the disposable syringes, sterilization is not needed, and a user only needs to tear open the outer package of the syringe to use it, which has the advantages of convenience, safety and hygiene.

[0003] The disposable syringe is composed of a needle cylinder, a push rod arranged in the needle cylinder and an injection needle with a sheath mounted at the end of the needle cylinder. The needle sticking machine is used to assemble the injection needle and the needle cylinder by means of gluing, and then to assemble a cap outside the injection needle.

[0004] At present, when the existing needle sticking machine on the market completes sheath assembly and discharges, the needle cylinder assembled with the sheath cannot be completely separated from the discharging mechanism, which leads to incomplete discharging and affects the normal work of the needle sticking machine. SUMMARY

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is to provide a sheath assembling device for a needle sticking machine, which comprises a workbench, a sheath feeding mechanism, a sheath pressing mechanism and a discharging mechanism arranged in sequence on the workbench, and a sheath separating and blocking mechanism arranged at the outlet end of the sheath feeding mechanism; a sheath turnover mechanism is arranged in front of the sheath separating and blocking mechanism, a mold is arranged below the sheath turnover mechanism, and a push-out pneumatic cylinder corresponding to the position of the mold is arranged on the workbench.

[0006] Further, the discharging mechanism comprises a rack, a discharging longitudinal movement mechanism is arranged on the rack; a discharging lifting mechanism is arranged on the discharging longitudinal movement mechanism, and a discharging clamping mechanism is connected to the lower end of the discharging lifting mechanism; a spring instantaneous mechanism is arranged on the discharging clamping mechanism.

[0007] Further, the discharging clamping mechanism comprises two oppositely arranged discharging clamping units, and the discharging clamping units are arranged at the lower end of the lifting plate.

[0008] The discharging clamping unit comprises a vertical plate, a clamping pneumatic cylinder and a movable clamping plate, the vertical plate is fixedly connected to the lower end of the lifting plate in the vertical direction, and the movable clamping plate is arranged on the inner side of the vertical plate in the vertical direction; the clamping pneumatic cylinder is fixedly arranged on the outer side wall of the vertical plate, and the output end of the clamping pneumatic cylinder is connected to the movable clamping plate; and a clamping claw is arranged at the lower end of the inner side wall of the movable clamping plate.

[0009] Further, the spring instantaneous mechanism comprises two oppositely arranged instantaneous clamping units, and the two instantaneous clamping units are correspondingly arranged on the inner sides of the two discharging clamping units.

[0010] The instantaneous clamping unit comprises an instantaneous clamping plate, a spring, a moving column and a guide sleeve, the instantaneous clamping plate is arranged on the inner side of the moving clamping plate in the vertical direction, the guide sleeve is fixedly arranged on the moving clamping plate, and the moving column is inserted into the guide sleeve; the inner end of the moving column is connected with the instantaneous clamping plate, and the outer end of the moving column is provided with a limiting plate.

[0011] The spring is sleeved on the moving column and located between the instantaneous clamping plate and the moving clamping plate.

[0012] Further, the sheath material blocking mechanism comprises a sheath blocking mechanism and a sheath material separating mechanism, the sheath blocking mechanism is arranged in front of the sheath material separating mechanism.

[0013] The sheath blocking mechanism comprises a blocking cylinder and a blocking rod, the blocking cylinder is arranged in the vertical direction, and the blocking rod is connected with the output end of the blocking cylinder; the sheath material separating mechanism comprises a separating cylinder and a separating column, the separating cylinder is arranged in the vertical direction, the output end of the separating cylinder is connected with a separating plate base, and the separating column is fixedly arranged on the bottom surface of the separating plate base in the vertical direction.

[0014] Further, the sheath turnover mechanism comprises a suction nozzle, a rotating shaft and a turnover cylinder, the suction nozzle is fixedly arranged on the rotating shaft through a suction nozzle backing plate; one end of the rotating shaft is provided with a gear, the gear is engaged with a rack, and the end portion of the rack is connected with the output end of the turnover cylinder.

[0015] The rotating shaft is internally provided with an air cavity, the air cavity is connected with a connector arranged on one side of the rotating shaft, and the connector is connected with an air source through an air pipe.

[0016] The suction nozzle backing plate is internally provided with an air flow channel in communication with the air cavity; one side of the suction nozzle is inwardly recessed to form a sheath containing area, an air suction hole is formed in the inner wall of the sheath containing area, and the air suction hole is in communication with the air flow channel.

[0017] Further, a sheath upper guide mechanism is arranged in front of the sheath turnover mechanism, a sheath lower guide mechanism is arranged below the sheath upper guide mechanism, and the sheath upper guide mechanism and the sheath lower guide mechanism are arranged on the workbench through a feeding side plate.

[0018] Further, the sheath upper guide mechanism comprises an upper guide cylinder and an upper guide push plate, the upper guide cylinder is fixedly arranged on the feeding side plate; the upper guide push plate is arranged in front of the rotating shaft in the transverse direction, and the output end of the upper guide cylinder is connected with the upper guide push plate.

[0019] Further, the sheath lower guide mechanism comprises a lower guide cylinder, a first lower guide push plate and a second lower guide push plate, the lower guide cylinder is fixedly arranged on the feeding side plate and located below the upper guide cylinder; the output end of the lower guide cylinder is connected with the first lower guide push plate, the first lower guide push plate is arranged in front of the second lower guide push plate, and the second lower guide push plate is arranged below the rotating shaft.

[0020] The opposite side walls of the first lower guide push plate and the second lower guide push plate are provided with vertical sheath guide grooves.

[0021] Further, the sheath pressing station is provided with a sheath pressing mechanism, which comprises a sheath pressing cylinder arranged vertically, and the output end of the sheath pressing cylinder is connected with a sheath pressing plate.

[0022] Compared with the prior art, the sheath assembling device for the needle sticking machine has the following beneficial effects: the unloading mechanism of the sheath assembling device for the needle sticking machine is provided with spring instantaneous mechanisms, when the two unloading clamping units move away from each other to loosen the needle cylinder, the two instantaneous clamping units of the spring instantaneous mechanisms are still clamping the needle cylinder, the instantaneous position of the needle cylinder is unchanged, the complete separation of the needle cylinder and the unloading clamping unit is ensured, the situation that the needle cylinder is stuck on the clamping claw of the unloading clamping unit and moves synchronously with the clamping claw without falling to cause incomplete unloading is avoided, and the normal work of the needle sticking machine is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a structural schematic view of the sheath assembling device for the needle sticking machine.

[0025] Figure 2 It is a position relationship schematic view of the sheath feeding mechanism, the sheath material blocking mechanism, the sheath overturning mechanism and the mold.

[0026] Figure 3 It is a structural schematic view of the sheath material blocking mechanism.

[0027] Figure 4 It is a structural schematic view of the sheath feeding mechanism.

[0028] Figure 5 It is a structural schematic view of the sheath material blocking mechanism.

[0029] Figure 6 It is a structural schematic view of the sheath material blocking mechanism.

[0030] Figure 7 It is a structural schematic view of the sheath overturning mechanism.

[0031] Figure 8 It is a position relationship schematic view of the suction nozzle overturning rear of the sheath overturning mechanism and the second lower guide push plate.

[0032] Figure 9 A-A sectional view. Figure 8

[0033] Figure 10 Structure diagram of the sheath guiding mechanism.

[0034] Figure 11 Structure diagram of the sheath pressing mechanism.

[0035] Figure 12 Structure diagram of the discharging mechanism.

[0036] Figure 13 Structure diagram of the discharging longitudinal moving mechanism.

[0037] Figure 14 Structure diagram of the discharging clamping mechanism.

[0038] Figure 15 Structure diagram of the spring instantaneous mechanism.

[0039] Figure 16 Working state diagram of the discharging mechanism.

[0040] Explanation of the symbols in the figures:

[0041] ​1, sheath feeding mechanism; 2, sheath material blocking mechanism; 3, sheath turnover mechanism; 4, sheath pressing mechanism; 5, unloading mechanism; 6, sheath upper guide mechanism; 7, hand handle; 8, sheath lower guide mechanism; 10, sheath; 11, hopper; 12, workbench; 13, push-out air cylinder; 14, material collecting port; 15, mold; 16, positioning rod; 17, needle cylinder; 18, feeding side plate; 19, mold moving guide rail; 20, mold pushing air cylinder; 21, mold pushing plate; 101, straight material channel; 102, straight vibration; 103, material channel groove; 104, material channel pressing plate; 201, sheath blocking mechanism; 202, sheath material blocking mechanism; 2011, blocking air cylinder; 2012, blocking rod; 2013, blocking cylinder seat; 2014, blocking vertical plate; 2021, material blocking air cylinder; 2022, material blocking column; 2023, material blocking plate base; 2024, material blocking cylinder seat; 2025, material blocking optical axis; 2026, material blocking vertical plate; 2027, material blocking guide sleeve; 2028, limiting ring; 301, suction nozzle; 302, rotating shaft; 303, gear; 304, rack; 305, turnover air cylinder; 306, suction nozzle pad plate; 307, sheath containing area; 308, air cavity; 309, air suction hole; 310, air flow channel; 501, machine frame; 502, unloading longitudinal movement mechanism; 503, unloading lifting mechanism; 504, unloading clamping mechanism; 505, spring instantaneous mechanism; 5201, longitudinal movement air cylinder; 5202, longitudinal movement plate; 5203, slide rail; 5204, slide block; 5301, lifting air cylinder; 5302, lifting plate; 5303, lifting guide sleeve; 5304, lifting guide column; 5305, connecting plate; 5401, vertical plate; 5402, clamping air cylinder; 5403, moving clamping plate; 5404, clamping claw; 5405, upper clamping claw; 5406, lower clamping claw; 5407, connecting table; 5408, clamping guide sleeve; 5409, clamping guide column; 5501, instantaneous clamping plate; 5502, spring; 5503, moving column; 5504, guide sleeve; 5505, limiting plate; 601, upper guide air cylinder; 602, upper guide pushing plate; 603, lower guide air cylinder; 604, No. 1 lower guide pushing plate; 605, No. 2 lower guide pushing plate; 606, sheath guide groove. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0043] As Figure 1As shown, the sheath assembling device for needle sticking machine of the present application is used to realize the feeding of sheath 10 at the sheath feeding station of the needle sticking machine of the syringe, and make the sheath 10 fall to the outside of the injection needle on the top of the needle cylinder 17, then realize the pressing of the sheath 10 on the top of the needle cylinder 17 at the sheath pressing station, and finally realize the unloading of the needle cylinder 17 assembled with the sheath 10 at the unloading station.

[0044] The sheath assembling device for needle sticking machine comprises a sheath feeding mechanism 1, a sheath separating and blocking mechanism 2, a sheath overturning mechanism 3, a sheath pressing mechanism 4 and an unloading mechanism 5, one end of the sheath feeding mechanism 1 is connected with the discharge port of the hopper 11 in the prior art, and the other end is provided with the sheath separating and blocking mechanism 2; the sheath 10 is filled in the hopper 11, and after being discharged from the discharge port of the hopper 11, the sheath 10 enters the sheath feeding mechanism 1 and is blocked at the sheath separating and blocking mechanism 2.

[0045] The sheath overturning mechanism 3 is arranged in front of the sheath separating and blocking mechanism 2, the lower part of the sheath overturning mechanism 3 is provided with a jig 15 with a positioning rod 16, and the needle cylinder 17 is fixed on the jig 15 by being sleeved on the outside of the positioning rod 16 at the needle cylinder feeding station of the needle sticking machine; after the sheath separating and blocking mechanism 2 is opened, the sheath 10 enters the sheath overturning mechanism 3, and after the sheath overturning mechanism 3 drives the sheath 10 to overturn, the sheath 10 falls downward to the outside of the injection needle on the top of the needle cylinder 17; then the push-out air cylinder 13 arranged on the workbench 12 of the needle sticking machine of the syringe pushes the jig 15 out of the sheath feeding station, the jig 15 is pushed to the sheath pressing station, the sheath 10 is pressed on the top of the needle cylinder 17 by the sheath pressing mechanism 4, and the assembly of the sheath 10 and the needle cylinder 17 is completed; then the push-out air cylinder 13 continues to act to push the jig 15 to the unloading station, the needle cylinder 17 assembled with the sheath 10 is detached from the jig 15 by the unloading mechanism 5 to realize unloading, and the needle cylinder 17 assembled with the sheath 10 falls into the collecting box arranged below through the collecting port 14 to be collected.

[0046] As shown in the figure, Figures 2-4 The sheath feeding mechanism 1 comprises a straight line channel 101, the straight line channel 101 is arranged above the straight vibration 102, the upper end of the straight line channel 101 is communicated with the discharge port of the hopper 11 in the prior art, and the sheath separating and blocking mechanism 2 is arranged at the lower end of the straight line channel 101. A plurality of channel grooves 103 are arranged at the straight line channel 101 in transverse direction; a channel pressing plate 104 is arranged at the middle top surface of the straight line channel 101, a plurality of sheath guide grooves are arranged in the channel pressing plate 104 in transverse direction; the plurality of sheath guide grooves are arranged one by one corresponding to the plurality of channel grooves 103, one sheath guide groove is communicated with one channel groove 103 corresponding to the position to form a sheath channel, and the sheath channel plays a guiding role for the movement of the sheath 10.

[0047] Since the sheath 10 is tapered and the end of the opening is provided with a flange, when the sheath 10 enters the straight channel 101 from the hopper 11, the end with smaller diameter of the sheath 10 falls into the channel groove 103 of the straight channel 101, and the flange will be placed on the channel groove 103 so that the opening of the sheath 10 faces upward; under the vibration of the straight vibrator 102, the sheath 10 is conveyed downward and passes through the guide groove in the channel pressing plate 104 and is conveyed to the sheath material blocking mechanism 2.

[0048] As shown in Figure 3 , Figure 4 , the sheath material blocking mechanism 2 includes a sheath blocking mechanism 201 and a sheath material blocking mechanism 202, both of which are arranged at the discharge port of the sheath feeding mechanism 1, and the sheath blocking mechanism 201 is arranged in front of the sheath material blocking mechanism 202. The sheath blocking mechanism 201 includes a blocking cylinder 2011 and a blocking rod 2012, the blocking cylinder 2011 is arranged vertically, and the blocking rod 2012 is connected to the output end of the blocking cylinder 2011. The sheath material blocking mechanism 202 includes a material blocking cylinder 2021 and a material blocking column 2022, the material blocking cylinder 2021 is arranged vertically, and the output end of the material blocking cylinder 2021 is connected with a material blocking plate base 2023, and the material blocking column 2022 is fixedly arranged on the bottom surface of the material blocking plate base 2023.

[0049] In the initial state, the sheath blocking mechanism 201 is in the lowered state to block the outlet of the straight channel 101, so as to prevent the sheath 10 from falling from the straight channel 101. The sheath material blocking mechanism 202 is in the raised state.

[0050] The hopper 11 contains the sheath 10, and after the sheath 10 is discharged from the discharge port of the hopper 11, it enters the straight channel 101, and under the vibration of the straight vibrator 102, the sheath 10 is conveyed to the lower end of the straight channel 101 and is blocked by the sheath blocking mechanism 201. The front lower side of the sheath feeding mechanism 1 is provided with a jig 15, and the jig 15 is provided with a number of positioning rods 16 which are the same as the number of the channel grooves 103, and a needle cylinder 17 is sleeved on the positioning rod 16; after the sheath blocking mechanism 201 is raised, the outlet of the straight channel 101 is opened, and after the sheath 10 leaves the outlet of the straight channel 101, it is sleeved outside the injection needle at the top of the needle cylinder 17, so as to realize the feeding of the sheath 10.

[0051] As shown in Figure 5As shown, the material blocking cylinder 2011 is multiple, multiple material blocking cylinders 2011 are arranged in the transverse direction on the top of the material blocking cylinder seat 2013, the number of material blocking cylinders 2011 is the same as the number of material channel grooves 103, and the output end of each material blocking cylinder 2011 is connected with a material blocking rod 2012, and the material blocking rod 2012 is correspondingly arranged above the material channel groove 103. The lower side of both ends of the material blocking cylinder seat 2013 is provided with a material blocking vertical plate 2014, and the material blocking vertical plate 2014 is fixedly arranged on the straight line material channel 101.

[0052] As shown in the figure, Figure 6 The material blocking cylinder 2021 is one, and the material blocking cylinder 2021 is fixedly arranged on the material blocking cylinder seat 2024; the lower side of both ends of the material blocking cylinder seat 2024 is provided with a material blocking vertical plate 2026, and the material blocking vertical plate 2026 is fixedly arranged on the straight line material channel 101.

[0053] The material blocking column 2022 is multiple, and multiple material blocking columns 2022 are fixedly arranged on the material blocking plate base 2023 in the transverse direction; the number of material blocking columns 2022 is the same as the number of material channel grooves 103, and the material blocking column 2022 is correspondingly arranged above the material channel groove 103.

[0054] The material blocking cylinder 2021 is symmetrically provided with a material blocking guide mechanism on both sides, the material blocking guide mechanism comprises a material blocking guide shaft 2025 and a material blocking guide sleeve 2027, the material blocking guide sleeve 2027 is fixedly arranged on the material blocking cylinder seat 2024, and the material blocking guide shaft 2025 is inserted into the inside of the material blocking guide sleeve 2027; the material blocking guide shaft 2025 and the material blocking guide sleeve 2027 cooperate to play a guiding role in the process of lifting and lowering the material blocking column 2022 driven by the material blocking cylinder 2021. The lower end of the material blocking guide shaft 2025 is connected with the material blocking plate base 2023, and the upper end of the material blocking guide shaft 2025 is provided with a limiting ring 2028, and the limiting ring 2028 is arranged to limit the descending stroke of the material blocking column 2022.

[0055] The working method of the sheath material blocking and blocking mechanism 2 is as follows: in the initial state, the sheath material blocking mechanism 201 is in the lowered state to block the outlet of the straight line material channel 101, and the sheath material blocking mechanism 202 is in the raised state, and the material blocking column 2022 is located above the material channel groove 103 of the straight line material channel 101; the hopper 11 is filled with sheaths 10, the sheaths 10 are discharged from the discharge port of the hopper 11 and then enter the material channel groove 103 of the straight line material channel 101, and under the vibration of the vibration device 102, the sheaths 10 are conveyed to the lower end of the straight line material channel 101, and the first row of sheaths in the front are blocked by the material blocking rod 2012; at this time, the material blocking cylinder 2021 is started to drive the material blocking column 2022 to descend, and the material blocking column 2022 is inserted into the opening of the second row of sheaths behind the first row of sheaths to limit the second row of sheaths 10;

[0056] The arrangement of the material separation mechanism plays a role in separating the first row of sheaths from the second row of sheaths, so that the second row of sheaths 10 and the sheaths 10 behind them cannot continue to move forward under the vibration of the straight vibration 102, avoiding the second row of sheaths from moving together with the first row of sheaths when the first row of sheaths leaves the straight material channel 101, affecting the normal feeding of the first row of sheaths, and ensuring the normal working of the sheath 10 feeding device.

[0057] Since there may be a situation of needle cylinder 17 material shortage on the positioning rod 16 of the mold 15, a sensor is arranged on the side of the mold 15, and any sensor capable of detecting whether the needle cylinder 17 exists on the positioning rod 16 of the mold 15 in the prior art can be used; according to the detection result of the sensor, the material blocking cylinder 2011 is controlled, so that the material blocking cylinder 2011 corresponding to the position of the positioning rod 16 sleeved with the needle cylinder 17 is started, and the material blocking cylinder 2011 corresponding to the positioning rod 16 with needle cylinder 17 material shortage is not started. The material blocking cylinder 2011 drives the material blocking rod 2012 to rise and open the corresponding straight material channel 101 outlet. The frontmost sheath 10 in the material channel 103 enters the sheath turnover mechanism 3 after leaving the outlet of the straight material channel 101.

[0058] As shown in Figures 7-10 The sheath turnover mechanism 3 includes a suction nozzle 301, a rotating shaft 302, and a turnover cylinder 305. The suction nozzle 301 is fixedly arranged on the rotating shaft 302 through a suction nozzle backing plate 306. One end of the rotating shaft 302 is provided with a gear 303, and the gear 303 is engaged with a rack 304. The end of the rack 304 is connected with the output end of the turnover cylinder 305. The inside of the rotating shaft 302 is provided with an air cavity 308, which is connected with a joint arranged on one side of the rotating shaft 302. The joint is connected with a gas source through a gas pipe.

[0059] The inside of the suction nozzle backing plate 306 is provided with an air flow channel 310 connected with the air cavity 308. The suction nozzle 301 is recessed inward on one side to form a sheath containing area 307. An air suction hole 309 is formed in the inner wall of the sheath containing area 307, and the air suction hole 309 is connected with the air flow channel 310.

[0060] After the sheath 10 enters the suction nozzle 301, it is vacuum adsorbed in the sheath containing area 307, ensuring that the sheath 10 will not fall during the turnover process with the rotating shaft 302. The rotating shaft 302 drives the suction nozzle 301 to turn over, turning the opening of the sheath 10 from upward to downward. The turned-over sheath 10 is located above the needle cylinder 17 on the positioning rod 16 of the mold 15.

[0061] The front of the sheath turnover mechanism 3 is provided with a sheath upper guide mechanism 6, and the lower part of the sheath upper guide mechanism 6 is provided with a sheath lower guide mechanism 8. Both the sheath upper guide mechanism 6 and the sheath lower guide mechanism 8 are arranged on the workbench 12 through the feeding side plate 18. The sheath upper guide mechanism 6 comprises an upper guide cylinder 601 and an upper guide push plate 602. The upper guide cylinder 601 is fixedly arranged on the feeding side plate 18, and the upper guide push plate 602 is arranged in front of the rotating shaft 302 in the transverse direction. The output end of the upper guide cylinder 601 is connected with the upper guide push plate 602. The arrangement of the upper guide push plate 602 can play a guiding role in the movement of the sheath 10 after the vacuum environment in the sheath containing area 307 is destroyed, so that the sheath 10 freely falls downward into the sheath guide channel.

[0062] The sheath lower guide mechanism 8 comprises a lower guide cylinder 603, a first lower guide push plate 604 and a second lower guide push plate 605. The lower guide cylinder 603 is fixedly arranged on the feeding side plate 18 and located below the upper guide cylinder 601. The output end of the lower guide cylinder 603 is connected with the first lower guide push plate 604. The first lower guide push plate 604 is arranged in front of the second lower guide push plate 605, and the second lower guide push plate 605 is arranged below the rotating shaft 302. The opposite side walls of the first lower guide push plate 604 and the second lower guide push plate 605 are both provided with a sheath guide groove in the vertical direction.

[0063] The workbench 12 is provided with two parallel mold fixture moving guide rails 19 in the transverse direction. The two mold fixture moving guide rails 19 are arranged in front of and behind each other. The interval between the two mold fixture moving guide rails 19 is a mold fixture moving channel, and the mold fixture 15 can move along the mold fixture moving channel.

[0064] When the push-out cylinder 13 arranged on the workbench 12 of the syringe needle sticking machine pushes the mold 15 into the sheath feeding station, a gap is formed between the mold 15 and the mold moving channel due to the fact that the width of the mold 15 is smaller than the width of the mold moving channel; the sheath lower guide mechanism 8 is started, the lower guide cylinder 603 drives the first lower guide push plate 604 to move backward, the first lower guide push plate 604 pushes the mold 15 to move backward to the position where the mold 15 is in contact with the mold moving guide rail 19 located at the rear, at this time, the first lower guide push plate 604 is in contact with the second lower guide push plate 605, the sheath guide grooves corresponding to the positions of the two lower guide push plates 604 and 605 are combined to form a sheath guide channel, at this time, the injection needle located at the top of the needle cylinder 17 is clamped at the lower part of the sheath guide channel. After the sheath turnover mechanism 3 is started to rotate the rotating shaft 302 to drive the sheath 10 to turn over, the position of the sheath containing area 307 is located above the sheath guide channel; at this time, the sheath upper guide mechanism 6 is started to drive the upper guide cylinder 601 to drive the upper guide push plate 602 to extend out, the upper guide push plate 602 moves backward to be close to the suction nozzle 301 until the upper guide push plate 602 is in contact with the suction nozzle 301; the vacuumization of the sheath containing area 307 by the gas source is stopped, the vacuum adsorption at the sheath containing area 307 is released, and the sheath 10 moves downward under the action of its own gravity to fall into the sheath guide channel, the sheath 10 falls along the sheath guide channel to the outside of the injection needle, and the feeding of the sheath 10 is completed.

[0065] The rear of the mold 15 is provided with a mold pushing mechanism, the mold pushing mechanism includes a mold pushing cylinder 20 and a mold pushing plate 21, and the output end of the mold pushing cylinder 20 is connected with the mold pushing plate 21. After the feeding of the sheath 10 is completed, the upper guide cylinder 601 and the lower guide cylinder 603 respectively drive the upper guide push plate 602 and the first lower guide push plate 604 to move reversely and reset; at this time, the injection needle located at the top of the needle cylinder 17 on the mold 15 and the sheath 10 clamped outside the injection needle are located in the sheath guide groove of the second lower guide push plate 605, the mold pushing cylinder 20 is started to drive the mold pushing plate 21 to move forward, the mold 15 is pushed forward to be in contact with the mold moving guide rail 19 located at the front, so that the sheath 10 is separated from the sheath guide groove of the second lower guide push plate 605, and then the push-out cylinder 13 arranged on the workbench 12 pushes the mold 15 into the sheath pressing station.

[0066] As shown in Figure 1 , the sheath pressing station is provided with a sheath pressing mechanism 4, the sheath pressing mechanism 4 includes a sheath pressing cylinder arranged in the vertical direction, and the output end of the sheath pressing cylinder is connected with a sheath pressing plate; when the sheath 10 is pressed, the sheath pressing cylinder is started to drive the sheath pressing plate to move downward, so that the sheath 10 is pressed outside the injection needle, as shown in Figure 11 . Then the push-out cylinder 13 arranged on the workbench 12 pushes the mold 15 into the discharging station.

[0067] As shown in Figure 1 ,Figures 11-16 As shown, the unloading station is provided with an unloading mechanism 5, which comprises a rack 501, and an unloading longitudinal moving mechanism 502 is arranged on the rack 501; an unloading lifting mechanism 503 is arranged on the unloading longitudinal moving mechanism 502, and an unloading clamping mechanism 504 is connected to the lower end of the unloading lifting mechanism 503; a spring instantaneous mechanism 505 is arranged on the unloading clamping mechanism 504.

[0068] At the needle cylinder loading station of the syringe needle sticking machine, the needle cylinder 17 is loaded onto the positioning rod 16 of the mold 15 and is pressed onto the mold 15; at the sheath loading station of the syringe needle sticking machine, the sheath 10 is loaded onto the top of the needle cylinder 17 and covers the injection needle; at the sheath pressing station of the syringe needle sticking machine, the sheath 10 is pressed onto the needle cylinder 17, and then the mold 15 is conveyed to the unloading station of the syringe needle sticking machine, the needle cylinder 17 assembled with the sheath 10 is detached from the mold 15 by the unloading mechanism 5 of the present application, and the needle cylinder 17 assembled with the sheath 10 is moved above the collecting port 14 to be loosened and unloaded, and the needle cylinder 17 assembled with the sheath 10 falls through the collecting port 14 and falls into the collecting box arranged below to be collected.

[0069] The unloading longitudinal moving mechanism 502 comprises a longitudinal moving cylinder 5201 and a longitudinal moving plate 5202, the longitudinal moving cylinder 5201 is fixedly arranged on the top of the rack 501, and the output end of the longitudinal moving cylinder 5201 is connected with the longitudinal moving plate 5202; a slide rail 5203 is arranged on the top of the rack 501 along the longitudinal direction, and the bottom surface of the longitudinal moving plate 5202 is provided with a slide block 5204 matched with the slide rail 5203. The longitudinal moving cylinder 5201 is started to drive the longitudinal moving plate 5202 to move, and then drives the unloading clamping mechanism 504 to move to a specified longitudinal position.

[0070] The unloading lifting mechanism 503 comprises a lifting cylinder 5301 and a lifting plate 5302, the lifting cylinder 5301 is fixedly arranged on the longitudinal moving plate 5202 along the vertical direction, and the output end of the lifting cylinder 5301 is connected with the lifting plate 5302. The lifting cylinder 5301 is started to drive the lifting plate 5302 to lift, and then drives the unloading clamping mechanism 504 to move to a specified vertical position.

[0071] The lifting cylinder 5301 is provided with lifting guide mechanisms on both sides, the lifting guide mechanisms comprise lifting guide sleeves 5303 and lifting guide columns 5304 correspondingly inserted into the lifting guide sleeves 5303, the lifting guide sleeves 5303 are two, and the two lifting guide sleeves 5303 are longitudinally and spaced apart on the longitudinal moving plate 5202; the upper ends of the lifting guide columns 5304 inserted into the two lifting guide sleeves 5303 are connected through a connecting plate 5305, and the lower ends of the lifting guide columns 5304 are connected with the lifting plate 5302. The lifting guide columns 5304 and the lifting guide sleeves 5303 cooperate to guide the lifting process of the unloading clamping mechanism 504, so that the unloading clamping mechanism 504 is more stable during lifting.

[0072] The unloading clamping mechanism 504 comprises two oppositely arranged unloading clamping units, and the unloading clamping units are arranged at the lower end of the lifting plate 5302; the unloading clamping unit comprises a vertical plate 5401, a clamping cylinder 5402 and a moving clamping plate 5403, the vertical plate 5401 is fixedly connected to the lower end of the lifting plate 5302 in the vertical direction, and the moving clamping plate 5403 is arranged on the inner side of the vertical plate 5401 in the vertical direction; the clamping cylinder 5402 is fixedly arranged on the outer side wall of the vertical plate 5401, and the output end of the clamping cylinder 5402 is connected with the moving clamping plate 5403; the vertical plate 5401 is further provided with a clamping guide sleeve 5408, and a clamping guide column 5409 is inserted into the clamping guide sleeve 5408, and the inner end of the clamping guide column 5409 is connected with the moving clamping plate 5403.

[0073] The inner side wall of the moving clamping plate 5403 is provided with a clamping claw 5404 at the lower end. The clamping claw 5404 comprises an upper clamping jaw 5405 and a lower clamping jaw 5406 arranged in an upper-lower spaced manner, and the end portions of the upper clamping jaw 5405 and the lower clamping jaw 5406 are connected through a connecting table 5407 fixedly arranged on the inner side wall of the moving clamping plate 5403.

[0074] The spring instantaneous mechanism 505 comprises two oppositely arranged instantaneous clamping units, and the two instantaneous clamping units are correspondingly arranged on the inner sides of the two unloading clamping units, the needle cylinder 17 is located between the two instantaneous clamping units, and the positions of the instantaneous clamping units correspond to the middle part of the needle cylinder 17. The positions of the clamping claws 5404 of the unloading clamping units correspond to the lower part of the needle cylinder 17.

[0075] The instantaneous clamping unit comprises an instantaneous clamping plate 5501, a spring 5502, a moving column 5503, and a guide sleeve 5504. The instantaneous clamping plate 5501 is vertically arranged on the inner side of the moving clamping plate 5403. The guide sleeve 5504 is fixedly arranged on the moving clamping plate 5403, and the moving column 5503 is inserted into the guide sleeve 5504. The inner end of the moving column 5503 is connected with the instantaneous clamping plate 5501, and the outer end of the moving column 5503 is provided with a limiting plate 5505. The cooperation of the moving column 5503 and the guide sleeve 5504 plays a guiding role in the movement of the instantaneous clamping plate 5501, and the limiting plate 5505 plays a limiting role in the movement of the instantaneous clamping plate 5501. The spring 5502 is sleeved on the moving column 5503 and located between the instantaneous clamping plate 5501 and the moving clamping plate 5403. The spring 5502 is arranged to take time to restore the original length through deformation, so that when the two unloading clamping units move away from each other to release the syringe 17, the instantaneous clamping plates 5501 of the two instantaneous clamping units still clamp the syringe 17, the instantaneous position of the syringe 17 is unchanged, the complete separation of the syringe 17 and the unloading clamping unit is ensured, and the situation that the syringe 17 is clamped on the clamping claw 5404 of the unloading clamping unit and moves synchronously with the clamping claw 5404 without falling to cause incomplete unloading is avoided.

[0076] The clamping cylinders 5402 of the two unloading clamping units drive the corresponding moving clamping plates 5403 to move towards each other, the moving clamping plates 5403 drive the corresponding instantaneous clamping plates 5501 to move, and the two instantaneous clamping plates 5501 move towards each other to clamp the middle part of the syringe 17. At this time, the spring 5502 starts to compress. The clamping cylinders 5402 continue to drive the two moving clamping plates 5403 to move towards each other until the clamping claws 5404 of the two unloading clamping units are in contact, and the clamping of the lower part of the syringe 17 is completed. At this time, the spring 5502 is further compressed, and at this time, the handle 7 arranged at the lower part of the syringe 17 is located between the upper clamping claw 5405 and the lower clamping claw 5406. When the unloading clamping mechanism 504 rises, the lower clamping claw 5406 pulls the handle 7 upwards to pull the syringe 17 off the positioning rod 16 of the fixture 15.

[0077] The middle part of the syringe 17 is clamped by the two instantaneous clamping units, and the lower part of the syringe 17 is clamped by the cooperation of the upper clamping claw 5405 and the lower clamping claw 5406 of the two unloading clamping units, so that the clamping claw 5404 is more stable in the process of pulling the syringe 17 off the fixture 15, and the situation that the syringe 17 deviates and tilts in the process of pulling the syringe 17 is avoided.

[0078] The working method of the unloading mechanism 5 is as follows: the lifting cylinder 5301 drives the unloading clamping mechanism 504 and the spring instantaneous mechanism 505 inside the unloading clamping mechanism 504 to descend to a specified position, at this time, the needle cylinder 17 on the mold 15 is located between the two instantaneous clamping units of the spring instantaneous mechanism 505; at this time, the spring instantaneous mechanism 505 is in an initial state, and the spring 5502 is in an original length and uncompressed state;

[0079] The clamping cylinder 5402 of the unloading clamping mechanism 504 drives the two moving clamping plates 5403 to move towards each other, and the moving clamping plates 5403 drive the instantaneous clamping plate 5501 to move close to the needle cylinder 17; when the instantaneous clamping plate 5501 contacts the cylinder wall of the needle cylinder 17, the spring 5502 starts to be compressed, and the clamping cylinder 5402 continues to drive the two moving clamping plates 5403 to move towards each other until the two clamping claws 5404 contact and clamp the needle cylinder 17, at this time, the spring 5502 is further compressed;

[0080] The lifting cylinder 5301 drives the unloading clamping mechanism 504 and the spring instantaneous mechanism 505 inside the unloading clamping mechanism 504 to ascend, and pulls the needle cylinder 17 out of the positioning rod 16 on the mold 15. Then the longitudinal moving cylinder 5201 of the unloading longitudinal moving mechanism 502 drives the unloading clamping mechanism 504 and the spring instantaneous mechanism 505 inside the unloading clamping mechanism 504 to longitudinally move forward to the above of the material collecting port 14 while clamping the needle cylinder 17; the clamping cylinder 5402 of the unloading clamping mechanism 504 drives the two moving clamping plates 5403 to move away from each other to release the needle cylinder 17, and since the spring 5502 in the compressed state needs time to recover to the original length, when the clamping claws 5404 move away from each other to release the needle cylinder 17, the instantaneous clamping plates 5501 of the two instantaneous clamping units are still clamping the needle cylinder 17, so that the instantaneous position of the needle cylinder 17 is unchanged; after the clamping claws 5404 completely leave the needle cylinder 17, the spring 5502 recovers to the original length to release the needle cylinder 17, and the needle cylinder 17 falls through the material collecting port 14 and falls into the collecting box arranged below for collection.

[0081] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A needle guard assembly device for a needle sticking machine comprising a work table, characterized in that: The workbench is sequentially provided with a sheath loading mechanism, a sheath pressing mechanism and a discharging mechanism, and the outlet end of the sheath loading mechanism is provided with a sheath material separating and blocking mechanism; the front of the sheath material separating and blocking mechanism is provided with a sheath overturning mechanism, and the lower part of the sheath overturning mechanism is provided with a mold; the workbench is provided with a push-out cylinder corresponding to the position of the mold; The discharging mechanism comprises a rack, and a discharging longitudinal moving mechanism is arranged on the rack; a discharging lifting mechanism is arranged on the discharging longitudinal moving mechanism, and the lower end of the discharging lifting mechanism is connected with a discharging clamping mechanism; a spring instantaneous mechanism is arranged on the discharging clamping mechanism; The discharging clamping mechanism comprises two oppositely arranged discharging clamping units, and the discharging clamping units are arranged at the lower end of the lifting plate; The discharging clamping unit comprises a vertical plate, a clamping cylinder and a movable clamping plate, the vertical plate is fixedly connected to the lower end of the lifting plate in the vertical direction, and the movable clamping plate is arranged on the inner side of the vertical plate in the vertical direction; the clamping cylinder is fixedly arranged on the outer side wall of the vertical plate, and the output end of the clamping cylinder is connected with the movable clamping plate; the inner side wall of the movable clamping plate is provided with a clamping claw at the lower end. The spring instantaneous mechanism comprises two oppositely arranged instantaneous clamping units, and the two instantaneous clamping units are correspondingly arranged on the inner sides of the two discharging clamping units. The instantaneous clamping unit comprises an instantaneous clamping plate, a spring, a movable column and a guide sleeve, and the instantaneous clamping plate is arranged on the inner side of the movable clamping plate in the vertical direction; the guide sleeve is fixedly arranged on the movable clamping plate, and the movable column is inserted into the guide sleeve; the inner end of the movable column is connected with the instantaneous clamping plate, and the outer end of the movable column is provided with a limiting plate. The spring is arranged on the movable column and located between the instantaneous clamping plate and the movable clamping plate.

2. The sheath assembly device for a needle sticking machine according to claim 1, characterized by: The sheath material separating and blocking mechanism comprises a sheath blocking mechanism and a sheath material separating mechanism, and the sheath blocking mechanism is arranged in front of the sheath material separating mechanism; The sheath blocking mechanism comprises a blocking cylinder and a blocking rod, the blocking cylinder is arranged in the vertical direction, and the blocking rod is connected with the output end of the blocking cylinder; the sheath material separating mechanism comprises a material separating cylinder and a material separating column, the material separating cylinder is arranged in the vertical direction, the output end of the material separating cylinder is connected with a material separating plate base, and the material separating column is fixedly arranged on the bottom surface of the material separating plate base in the vertical direction.

3. The sheath assembly device for a needle sticking machine according to claim 1, wherein: The sheath overturning mechanism comprises a suction nozzle, a rotating shaft and a overturning cylinder, the suction nozzle is fixedly arranged on the rotating shaft through a suction nozzle backing plate; one end of the rotating shaft is provided with a gear, the gear is engaged with a rack, and the end of the rack is connected with the output end of the overturning cylinder; The rotating shaft is internally provided with a gas cavity, the gas cavity is connected with a connector arranged on one side of the rotating shaft, and the connector is connected with a gas source through a gas pipe; The suction nozzle backing plate is internally provided with an air flow channel in communication with the gas cavity; one side of the suction nozzle is inwardly recessed to form a sheath containing area, and an air suction hole is formed in the inner wall of the sheath containing area and in communication with the air flow channel.

4. The sheath assembly device for a needle sticking machine according to claim 3, wherein: The front of the sheath overturning mechanism is provided with a sheath upper guide mechanism, the lower part of the sheath upper guide mechanism is provided with a sheath lower guide mechanism, and the sheath upper guide mechanism and the sheath lower guide mechanism are arranged on the workbench through a loading side plate.

5. The sheath assembly device for a needle sticking machine according to claim 4, wherein: The upper guide mechanism of the sheath comprises an upper guide cylinder and an upper guide push plate, and the upper guide cylinder is fixedly arranged on the feeding side plate; the upper guide push plate is arranged in front of the rotating shaft in the transverse direction, and the output end of the upper guide cylinder is connected with the upper guide push plate.

6. The sheath assembly device for a needle sticking machine according to claim 5, wherein: The lower guide mechanism of the sheath comprises a lower guide cylinder, a first lower guide push plate and a second lower guide push plate, and the lower guide cylinder is fixedly arranged on the feeding side plate below the upper guide cylinder; the output end of the lower guide cylinder is connected with the first lower guide push plate, the first lower guide push plate is arranged in front of the second lower guide push plate, and the second lower guide push plate is arranged below the rotating shaft. The opposite side walls of the first lower guide push plate and the second lower guide push plate are both provided with sheath guide grooves in the vertical direction.

7. The sheath assembly device for a needle sticking machine according to claim 1, wherein: The sheath pressing station is provided with a sheath pressing mechanism, and the sheath pressing mechanism comprises a sheath pressing cylinder arranged in the vertical direction, and the output end of the sheath pressing cylinder is connected with a sheath pressing plate.

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