Piston and needle cylinder assembling equipment for medical injection practice pen

Abstract

The utility model relates to the technical field of medical practice tool assembling, in particular to medical injection practice pen piston needle cylinder assembling equipment which comprises a circulating conveying line, a positioning mechanism, a conveying jig, a piston cylinder feeding mechanism, a needle cylinder assembling mechanism and a material taking and assembling mechanism. The circulating conveying line is used for conveying a conveying jig, the positioning mechanism is used for positioning the conveying jig on the circulating conveying line, and the piston barrel feeding mechanism is used for feeding piston barrels to the conveying jig; the needle cylinder assembling mechanism comprises a needle cylinder feeding device, a first spring feeding device, a second spring feeding device and a rotating disc device, and a needle cylinder assembling jig is arranged on the rotating disc device. The piston needle cylinder assembling machine achieves automatic assembling of the piston needle cylinder, adopts full-automatic assembling, is high in assembling efficiency and is suitable for mass production. The problems that existing manual assembly is low in efficiency and high in difficulty are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical practice tool assembly, in particular to an assembly device for a piston syringe of a medical injection practice pen. Background Art

[0002] An insulin practice injection pen is a medical device designed for diabetic patients, aiming to simulate the real insulin injection process and help patients familiarize themselves with and master the insulin injection skills. The internal structure of the pen is carefully designed to simulate the actual operation of an insulin injection pen. The insulin practice injection pen usually does not contain real insulin liquid, but uses a simulated liquid to ensure that patients do not come into contact with drugs during practice, thus ensuring safety. Through repeated practice, patients can proficiently master key steps such as preparation before injection, selection of injection site, control of injection angle, control of injection depth, and post-injection treatment.

[0003] The injection practice pen is assembled from multiple parts. In the existing production process of the injection practice pen, it is assembled manually or by semi-automatic equipment. This assembly method has low efficiency, high difficulty, and high cost. Therefore, it is necessary to make an automated design for the production of the existing injection practice pen. Summary of the Utility Model

[0004] To solve the above problems, the utility model realizes the automated assembly of the piston syringe, adopts full automation for assembly, has high assembly efficiency, and is suitable for mass production. It solves the problems of low efficiency and high difficulty in existing manual assembly for the assembly device of the piston syringe of the medical injection practice pen.

[0005] The technical solution adopted by the utility model is: an assembly device for a piston syringe of a medical injection practice pen, including a circulating conveyor line, a positioning mechanism, a conveying fixture, a piston barrel feeding mechanism, a syringe assembly mechanism, and a picking and assembling mechanism; the circulating conveyor line is used for transporting the fixture, the positioning mechanism is used for positioning the conveying fixture on the circulating conveyor line, and the piston barrel feeding mechanism is used for feeding the piston barrel onto the conveying fixture; the syringe assembly mechanism includes a syringe feeding device, a first spring feeding device, a second spring feeding device, and a turntable device. The turntable device is provided with a syringe assembly fixture. The syringe feeding device is used for feeding the syringe onto the syringe assembly fixture. The turntable device is used for driving the syringe assembly fixture to sequentially pass through the first spring feeding device and the second spring feeding device. The first spring feeding device is used for installing the first spring on the outer diameter of the syringe, and the second spring feeding device is used for installing the second spring on the inner diameter of the syringe; the picking and assembling mechanism is used for grasping and loading the assembled syringe onto the piston barrel.

[0006] A further improvement to the above solution is that the loop conveyor line includes an upper conveyor assembly, a lower conveyor assembly, a first lifting assembly, and a second lifting assembly. A connecting frame is provided between the upper conveyor assembly and the lower conveyor assembly. The first lifting assembly and the second lifting assembly are respectively arranged at both ends of the lower conveyor assembly and the upper conveyor assembly to form a closed-loop conveyor channel for conveying the fixture.

[0007] A further improvement to the above solution is that multiple groups of the upper conveyor assemblies are provided, and the heads and tails of adjacent two groups of upper conveyor assemblies are connected end to end; multiple groups of the lower conveyor assemblies are provided, and the heads and tails of adjacent two groups of lower conveyor assemblies are connected end to end; the upper conveyor assembly and the lower conveyor assembly are opposite to each other vertically.

[0008] A further improvement to the above solution is that the upper conveyor assembly includes an upper conveyor frame, upper conveyor rollers, an upper conveyor belt, an upper conveyor motor, and upper conveyor baffles. The upper conveyor rollers are arranged at both ends of the upper conveyor frame. The upper conveyor belt is transmission-connected to the upper conveyor rollers. The upper conveyor motor is arranged on the connecting frame and is drivingly connected to the upper conveyor rollers. The upper conveyor baffles are arranged on both sides of the upper conveyor frame and form an upper conveying groove on the upper side of the upper conveyor belt. The upper conveyor belt is used to drive the conveying fixture to convey along the upper conveying groove.

[0009] A further improvement to the above solution is that the lower conveyor assembly includes a lower conveyor frame, lower conveyor rollers, a lower conveyor belt, a lower conveyor motor, and lower conveyor baffles. The lower conveyor rollers are arranged at both ends of the lower conveyor frame. The lower conveyor belt is transmission-connected to the lower conveyor rollers. The lower conveyor motor is arranged on the connecting frame and is drivingly connected to the lower conveyor rollers. The lower conveyor baffles are arranged on both sides of the lower conveyor frame and form a lower conveying groove on the upper side of the lower conveyor belt. The lower conveyor belt is used to drive the conveying fixture to convey along the lower conveying groove.

[0010] A further improvement to the above solution is that the positioning mechanism includes a conveying positioning module and a position positioning module. The conveying positioning module includes a first fixing frame arranged on the upper conveyor assembly, a conveying positioning cylinder, and a conveying positioning pressing block. The conveying positioning cylinder is arranged on the first fixing frame. The conveying positioning pressing block is arranged at the driving end of the conveying positioning cylinder. A positioning surface is arranged on the conveying positioning pressing block facing the conveying direction of the conveying fixture, and the positioning surface is used for positioning the fixture bottom plate on the upper conveyor assembly.

[0011] A further improvement to the above solution is that the position positioning module is located on one side of the conveying positioning module. A positioning pressing plate is arranged on the positioning surface. The position positioning module includes a jacking cylinder and a jacking positioning block. The jacking positioning block is opposite to the positioning pressing plate to clamp and position the fixture bottom plate.

[0012] A further improvement to the above solution is that the jacking positioning block is provided with a position positioning block. The conveying jig includes a jig bottom plate and a fixed placement seat. The jig bottom plate is provided with a positioning groove. The position positioning block is used to cooperate with the positioning groove to position the jig bottom plate, and together with the positioning surface, a double-sided positioning structure is formed; a positioning inclined surface is provided on the upper side of the position positioning block.

[0013] A further improvement to the above solution is that positioning pin studs are provided on both sides of the jacking positioning block where the position positioning block is located. Positioning pin holes are provided on both sides of the jig bottom plate. The positioning pin holes cooperate with the positioning pin studs to position the jig bottom plate.

[0014] A further improvement to the above solution is that the piston barrel feeding mechanism includes a piston barrel feeding tray, a piston barrel feeding track, and a piston barrel picking component. One end of the piston barrel feeding track is connected to the piston barrel feeding tray. The piston barrel picking component is used to pick up the piston barrel on the piston barrel feeding track and place it on the conveying jig.

[0015] A further improvement to the above solution is that the syringe feeding device includes a syringe feeding tray, a syringe feeding track, and a syringe picking component. The syringe feeding track is connected to the syringe feeding tray. The syringe picking component is used to pick up the syringe on the syringe feeding track and place it on the syringe assembly jig; the syringe picking component is provided with a syringe picking rotation module and a syringe clamping module. The syringe picking rotation module is used to drive the syringe clamping module to rotate to adjust the angle of syringe picking, and the syringe clamping module is used to clamp the syringe for feeding.

[0016] A further improvement to the above solution is that the first spring feeding device includes a first spring feeding tray, a first spring feeding track, and a first spring picking component. The first spring feeding track is connected to the first spring feeding tray. The first spring picking component is used to pick up the first spring on the first spring feeding track and assemble it onto the outer diameter of the syringe.

[0017] A further improvement to the above solution is that the second spring feeding device includes a second spring feeding tray, a second spring feeding track, and a second spring picking component. The second spring feeding track is connected to the second spring feeding tray. The second spring picking component is used to pick up the second spring on the second spring feeding track and assemble it onto the inner diameter of the syringe.

[0018] A further improvement to the above solution is that the material taking and assembling mechanism includes a gantry, an assembling transfer transmission module, and a transfer grasping device. The assembling transfer transmission module is arranged on the gantry, and the transfer grasping device is arranged on the assembling transfer transmission module. The transfer grasping device includes a transverse bracket and two groups of assembling manipulators arranged on the transverse bracket. A directional bushing is arranged on one side of the turntable device, and the directional bushing is used for positioning the direction of the syringe barrel. The assembling transfer transmission module is used to drive the two groups of assembling manipulators to alternately move between the syringe barrel assembly jig, the shaping bushing, and the conveying jig. The assembling manipulator is provided with a direction adjustment motor and a grasping air claw. The direction adjustment motor is used to adjust the wire release of the grasped syringe barrel, and the grasping air claw is used to grasp the syringe barrel. A CCD camera is arranged on the gantry to photograph the assembling situation and direction of the syringe barrel.

[0019] The beneficial effects of the present utility model are as follows:

[0020] Compared with the preparation of existing medical practice piston syringes, the present utility model realizes the automatic assembly of piston syringes. By adopting fully automatic assembly, the assembly efficiency is high and it is suitable for mass production. It solves the problems of low efficiency and high difficulty in existing manual assembly.

[0021] Through the integrated design of the circulating conveyor line, the present utility model realizes the continuous and efficient transmission of the jigs, effectively reducing the manual handling link. This not only reduces the labor intensity but also significantly improves the automation level of the production line. At the same time, the precise positioning of the positioning mechanism ensures the stability of the jig during transportation, providing a reliable benchmark for subsequent assembly operations. Secondly, the coordinated operation of the piston barrel feeding mechanism and the syringe barrel assembly mechanism realizes the efficient conversion from raw materials to semi-finished products. The precise cooperation of the syringe barrel feeding device, the first spring feeding device, the second spring feeding device, and the turntable device ensures the accurate assembly of the inner and outer springs of the syringe barrel, improving both the assembly accuracy and the structural stability and service performance of the product. Furthermore, the innovative application of the turntable device, through its rotation characteristics, realizes the automatic circulation of the syringe barrel assembly jig, enabling the first spring and the second spring to complete the installation operation in sequence and with high efficiency. This design not only simplifies the assembly process but also shortens the production cycle and improves the overall production efficiency. Finally, the efficient grasping and assembly function of the material taking and assembling mechanism realizes the rapid and accurate combination of the assembled syringe barrel and the piston barrel, further improving the product assembly efficiency. At the same time, the design of this mechanism fully considers the convenience and stability of operation, ensuring the damage-free and high-quality completion of the product during the assembly process.

[0022] With its efficient, precise, and automated technical characteristics, the present utility model has brought significant technological progress and production efficiency improvement to the medical supplies production industry. Description of the Drawings

[0023] Figure 1 It is a three-dimensional schematic diagram of the piston syringe assembly device for the medical injection practice pen of the present utility model;

[0024] Figure 2 It is Figure 1 the structural schematic diagram of the piston syringe assembly device for the medical injection practice pen;

[0025] Figure 3 It is Figure 1 the top view schematic diagram of the piston syringe assembly device for the medical injection practice pen;

[0026] Figure 4 It is Figure 1 the schematic diagram of the circulating conveyor line of the piston syringe assembly device for the medical injection practice pen;

[0027] Figure 5 It is Figure 1 the structural schematic diagram of the positioning mechanism of the piston syringe assembly device for the medical injection practice pen;

[0028] Figure 6 It is Figure 1 the exploded schematic diagram of the positioning mechanism of the piston syringe assembly device for the medical injection practice pen;

[0029] Figure 7 It is Figure 1 the schematic diagram of the piston barrel feeding mechanism of the piston syringe assembly device for the medical injection practice pen;

[0030] Figure 8 It is Figure 1 the schematic diagram of the syringe assembly mechanism of the piston syringe assembly device for the medical injection practice pen;

[0031] Figure 9 It is Figure 1 the schematic diagram of the syringe assembly mechanism of the piston syringe assembly device for the medical injection practice pen;

[0032] Figure 10 It is the schematic diagram of the piston syringe assembly process for the medical practice pen of the present utility model;

[0033] Figure 11 It is the schematic diagram of the piston syringe assembly process for the medical practice pen of the present utility model.

[0034] Explanation of reference numerals: Circulating conveyor line 1, upper conveyor assembly 11, upper conveyor frame 111, upper conveyor roller 112, upper conveyor belt 113, upper conveyor motor 114, upper conveyor baffle 115, lower conveyor assembly 12, lower conveyor frame 121, lower conveyor roller 122, lower conveyor belt 123, lower conveyor motor 124, lower conveyor baffle 125, first lifting assembly 13, second lifting assembly 14, connecting frame 15;

[0035] Positioning mechanism 2, conveying and positioning module 21, first fixing frame 211, conveying and positioning cylinder 212, conveying and positioning pressing block 213, positioning surface 214, positioning pressing plate 215, position positioning module 22, jacking cylinder 221, jacking positioning block 222, positioning block 223, positioning pin 224;

[0036] Conveying fixture 3, fixture bottom plate 31, positioning groove 311, positioning pin hole 312, fixed placement seat 32, placement groove 321;

[0037] Piston barrel feeding mechanism 4, piston barrel feeding tray 41, piston barrel feeding track 42, piston barrel picking component 43;

[0038] Syringe assembly mechanism 5, syringe feeding device 51, syringe feeding tray 511, syringe feeding track 512, syringe picking component 513, syringe picking and rotating module 514, syringe clamping module 515, first spring feeding device 52, first spring feeding tray 521, first spring feeding track 522, first spring picking component 523, second spring feeding device 53, second spring feeding tray 531, second spring feeding track 532, second spring picking component 533, turntable device 54, syringe assembly fixture 541;

[0039] Picking and assembling mechanism 6, gantry 61, CCD camera 611, assembly transfer drive module 62, transfer and grasping device 63, transverse bracket 631, assembly manipulator 632, direction adjustment motor 6321, grasping air claw 6322. Detailed implementation mode

[0040] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0041] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As Figures 1 to 11As shown in the figure, in an embodiment of the present utility model, a piston syringe assembly device for medical injection practice pens is involved, including a circulating conveyor line 1, a positioning mechanism 2, a conveying fixture 3, a piston barrel feeding mechanism 4, a syringe assembly mechanism 5, and a picking and assembling mechanism 6; the circulating conveyor line 1 is used to convey the fixture 3 for transmission, the positioning mechanism 2 is used to position the fixture 3 on the circulating conveyor line 1, and the piston barrel feeding mechanism 4 is used to feed the piston barrel onto the conveying fixture 3; the syringe assembly mechanism 5 includes a syringe feeding device 51, a first spring feeding device 52, a second spring feeding device 53, and a turntable device 54. A syringe assembly fixture 541 is provided on the turntable device 54. The syringe feeding device 51 is used to feed the syringe onto the syringe assembly fixture 541. The turntable device 54 is used to drive the syringe assembly fixture 541 to sequentially pass through the first spring feeding device 52 and the second spring feeding device 53. The first spring feeding device 52 is used to install the first spring on the outer diameter of the syringe, and the second spring feeding device 53 is used to install the second spring on the inner diameter of the syringe; the picking and assembling mechanism 6 is used to grab and load the assembled syringe into the piston barrel. This embodiment realizes the automatic assembly of the piston syringe, adopts full-automatic assembly, has high assembly efficiency, and is suitable for mass production. It solves the problems of low efficiency and high difficulty in existing manual assembly.

[0043] Through the integrated design of the circulating conveyor line 1 in this embodiment, the continuous and efficient transmission of the fixture is realized, effectively reducing the manual handling link. This not only reduces the labor intensity but also significantly improves the automation level of the production line. At the same time, the precise positioning of the positioning mechanism 2 ensures the stability of the fixture during the conveying process, providing a reliable benchmark for subsequent assembly operations. Secondly, the coordinated operation of the piston barrel feeding mechanism 4 and the syringe assembly mechanism 5 realizes the efficient conversion from raw materials to semi-finished products. The precise cooperation of the syringe feeding device 51, the first spring feeding device 52, the second spring feeding device 53, and the turntable device 54 ensures the accurate assembly of the inner and outer springs of the syringe, improving both the assembly accuracy and ensuring the structural stability and service performance of the product. Furthermore, the innovative application of the turntable device 54, through its rotation characteristics, realizes the automatic transfer of the syringe assembly fixture 541, enabling the first spring and the second spring to complete the installation operation in sequence and with high efficiency. This design not only simplifies the assembly process but also shortens the production cycle and improves the overall production efficiency. Finally, the efficient picking and assembling function of the picking and assembling mechanism 6 realizes the rapid and accurate combination of the assembled syringe and the piston barrel, further improving the product assembly efficiency. At the same time, the design of this mechanism fully considers the convenience and stability of operation, ensuring the damage-free and high-quality completion of the product during the assembly process. With its high-efficiency, precise, and automatic technical characteristics, this embodiment has brought significant technological progress and production efficiency improvement to the medical supplies production industry.

[0044] Refer toFigure 4 As shown in the figure, the circular conveyor line 1 includes an upper conveyor assembly 11, a lower conveyor assembly 12, a first lifting assembly 13 and a second lifting assembly 14. A connecting frame 15 is provided between the upper conveyor assembly 11 and the lower conveyor assembly 12. The first lifting assembly 13 and the second lifting assembly 14 are respectively arranged at both ends of the lower conveyor assembly 12 and the upper conveyor assembly 11 to form a closed-loop conveyor channel for transporting the jig 3. Specifically, multiple groups of the upper conveyor assembly 11 are provided, and the head and tail of adjacent two groups of the upper conveyor assembly 11 are connected; multiple groups of the lower conveyor assembly 12 are provided, and the head and tail of adjacent two groups of the lower conveyor assembly 12 are connected; the upper conveyor assembly 11 and the lower conveyor assembly 12 are opposite to each other up and down. In this embodiment, the parallel configuration and the head-to-tail connection structure of multiple groups of upper and lower conveyor assemblies ensure the stable and continuous flow of the piston syringe assembly in the closed-loop conveyor channel, effectively avoiding the delays, mistakes and omissions of traditional manual handling. The precise coordinated operation of the first lifting assembly 13 and the second lifting assembly 14 realizes the efficient and smooth transition of the assembly between different layers, further optimizing the production process. In addition, the design of the upper and lower layers being opposite to each other makes full use of the vertical space, reduces the floor area, and improves the flexibility and space utilization rate of the workshop layout.

[0045] The upper conveying assembly 11 includes an upper conveying frame 111, upper conveying rollers 112, an upper conveyor belt 113, an upper conveying motor 114, and upper conveying baffles 115. The upper conveying rollers 112 are arranged at both ends of the upper conveying frame 111. The upper conveyor belt 113 is transmission-connected to the upper conveying rollers 112. The upper conveying motor 114 is arranged on the connecting frame 15 and is drivingly connected to the upper conveying rollers 112. The upper conveying baffles 115 are arranged on both sides of the upper conveying frame 111 and form an upper conveying groove on the upper side of the upper conveyor belt 113. The upper conveyor belt 113 is used to drive the conveying jig 3 to convey along the upper conveying groove. Specifically, the lower conveying assembly 12 includes a lower conveying frame 121, lower conveying rollers 122, a lower conveyor belt 123, a lower conveying motor 124, and lower conveying baffles 125. The lower conveying rollers 122 are arranged at both ends of the lower conveying frame 121. The lower conveyor belt 123 is transmission-connected to the lower conveying rollers 122. The lower conveying motor 124 is arranged on the connecting frame 15 and is drivingly connected to the lower conveying rollers 122. The lower conveying baffles 125 are arranged on both sides of the lower conveying frame 121 and form a lower conveying groove on the upper side of the lower conveyor belt 123. The lower conveyor belt 123 is used to drive the conveying jig 3 to convey along the lower conveying groove. In this embodiment, the parallel configuration and the head-to-tail connection structure of multiple groups of upper and lower conveying assemblies 12 ensure the stable and continuous flow of the piston syringe assembly in the closed-loop conveying channel, effectively avoiding the delays, omissions, and errors of traditional manual handling. The precise coordinated operation of the first lifting assembly 13 and the second lifting assembly 14 realizes the efficient and smooth transition of the assembly between different layers, further optimizing the production process. In addition, the design with the upper and lower layers facing each other makes full use of the vertical space, reduces the floor area, and improves the flexibility of the workshop layout and the space utilization rate. In summary, the technology of this circulating conveyor line 1 brings an efficient and precise automated solution to the assembly operation of the piston syringe of the medical practice pen.

[0046] Refer to Figures 5 to 6As shown, the positioning mechanism 2 includes a conveying positioning module 21 and a position positioning module 22, wherein the conveying positioning module 21 includes a first fixed frame 211, a conveying positioning cylinder 212 and a conveying positioning block 213 arranged on the upper conveying assembly 11, wherein the conveying positioning cylinder 212 is arranged on the first fixed frame 211, and the conveying positioning block 213 is arranged at the driving end of the conveying positioning cylinder 212, and the conveying positioning block 213 is provided with a positioning surface 214 facing the conveying direction of the conveying fixture 3, and the positioning surface 214 is used for positioning the fixture bottom plate 31 on the upper conveying assembly 11. In this embodiment, the conveying positioning module 21 realizes the precise positioning of the fixture bottom plate 31 on the upper conveying assembly 11 through the stable support of the first fixed frame 211 and the precise drive of the conveying positioning cylinder 212. The positioning surface 214 on the conveying positioning block 213 is carefully designed according to the movement direction of the conveying fixture 3, ensuring the accurate position of the fixture base plate 31 before the syringe is assembled, thereby effectively avoiding assembly errors caused by positioning deviations. This design not only improves assembly efficiency, but also significantly enhances product consistency and reliability, providing a solid guarantee for the high-quality production of medical practice pen piston syringes. At the same time, the modular design facilitates maintenance and upgrades, further enhancing the flexibility and adaptability of the production line.

[0047] The position positioning module 22 is located on one side of the conveying positioning module 21, and the positioning surface 214 is provided with a positioning plate 215. The position positioning module 22 includes a lifting cylinder 221 and a lifting positioning block 222, and the lifting positioning block 222 is opposite to the positioning plate 215 to clamp and position the fixture base plate 31. In this embodiment, by cleverly setting the position positioning module 22 on one side of the conveying module, and cooperating with the carefully designed positioning plate 215 on the positioning surface 214, the stable clamping and precise positioning of the fixture base plate 31 are achieved. The combined application of the lifting cylinder 221 and the lifting positioning block 222 not only ensures the verticality and horizontality of the piston syringe during assembly, but also reduces the assembly error through precise displacement control, and ensures the seamless cooperation between the syringe and the piston. This structural design effectively improves the overall quality of the medical practice pen, reduces the defective rate, and speeds up the assembly process, providing more reliable and efficient tool support for medical teaching and practice.

[0048] The jacking positioning block 222 is provided with a position positioning block 223. The conveying jig 3 includes a jig bottom plate 31 and a fixed placement seat 32. The fixed placement seat 32 is provided with a placement groove 321 for placing the piston. The jig bottom plate 31 is provided with a positioning groove 311. The position positioning block 223 is used to cooperate with the positioning groove 311 to position the jig bottom plate 31 and form a double-sided positioning structure in combination with the positioning surface 214. A positioning inclined surface is provided on the upper side of the position positioning block 223. In this embodiment, through the precise cooperation between the position positioning block 223 and the positioning groove 311 on the jig bottom plate 31, a stable double-sided positioning structure is formed, ensuring the accurate positioning of the assembly jig and avoiding assembly defects caused by position deviation. In addition, the positioning inclined surface designed on the position positioning block 223 further optimizes the alignment process between the piston and the placement groove 321, enabling the piston to be inserted smoothly and accurately, reducing assembly errors and the need for manual adjustment. This design not only improves the consistency and reliability of assembly, but also reduces the operation difficulty and accelerates the production process, having significant technical effects on improving the product quality and production efficiency of the medical practice pen.

[0049] Positioning pin 224 is provided on both sides of the jacking positioning block 222 where it is located at the position positioning block 223. Positioning pin holes 312 are provided on both sides of the jig bottom plate 31. The positioning pin holes 312 cooperate with the positioning pins 224 to position the jig bottom plate 31. In this embodiment, the positioning pins 224 are in close cooperation with the positioning pin holes 312 on the jig bottom plate 31 to form an accurate and stable positioning mechanism. This design not only ensures the position consistency of the piston syringe during the assembly process, effectively avoiding offset and misalignment phenomena, but also greatly simplifies the assembly process with high assembly accuracy. At the same time, the accuracy of the positioning system promotes the high-precision docking between components, improving the assembly quality and performance stability of the final product, which is of great significance for ensuring the use safety and reliability of the medical practice pen.

[0050] Refer to Figure 7As shown, the piston barrel feeding mechanism 4 includes a piston barrel feeding tray 41, a piston barrel feeding track 42, and a piston barrel picking component 43. One end of the piston barrel feeding track 42 is connected to the piston barrel feeding tray 41. The piston barrel picking component 43 is used to pick up the piston barrel on the piston barrel feeding track 42 and place it on the conveying fixture 3. In this embodiment, through the collaborative action of the piston barrel feeding tray 41 and the feeding track, the orderly supply and precise positioning of the piston barrel are achieved, reducing manual intervention and lowering the operation complexity. The precise picking and placing function of the piston barrel picking component 43 ensures that the piston barrel can be accurately transferred to the conveying fixture 3, laying a solid foundation for the subsequent assembly steps. The implementation of this technical solution not only speeds up the assembly speed but also reduces human errors through an automated process, improving the product quality consistency, which is of great significance for ensuring the performance stability and use safety of the medical practice pen.

[0051] Refer to Figures 8 to 9 As shown, the syringe feeding device 51 includes a syringe feeding tray 511, a syringe feeding track 512, and a syringe picking component 513. The syringe feeding track 512 is connected to the syringe feeding tray 511. The syringe picking component 513 is used to pick up the syringe on the syringe feeding track 512 and place it on the syringe assembly fixture 541. The syringe picking component 513 is provided with a syringe picking rotation module 514 and a syringe clamping module 515. The syringe picking rotation module 514 is used to drive the syringe clamping module 515 to rotate to adjust the angle of syringe picking. The syringe clamping module 515 is used to clamp the syringe for feeding. In this embodiment, through the precise connection between the syringe feeding tray 511 and the feeding track, the continuous and stable supply of the syringe is achieved, effectively improving the assembly efficiency. The rotation module and the clamping module in the syringe picking component 513 work together, not only precisely controlling the picking and releasing of the syringe but also flexibly adjusting the picking angle according to the assembly requirements, ensuring the precise alignment of the syringe and the assembly fixture, reducing manual intervention and lowering the operation error. This design not only optimizes the production process, improves the assembly accuracy, but also significantly enhances the operation safety, providing solid technical support for the high-quality production of the medical practice pen.

[0052] The first spring feeding device 52 includes a first spring supply tray 521, a first spring feeding track 522, and a first spring picking component 523. The first spring feeding track 522 is connected to the first spring supply tray 521. The first spring picking component 523 is used to pick up the first spring on the first spring feeding track 522 and assemble it onto the outer diameter of the syringe barrel. Specifically, the second spring feeding device 53 includes a second spring supply tray 531, a second spring feeding track 532, and a second spring picking component 533. The second spring feeding track 532 is connected to the second spring supply tray 531. The second spring picking component 533 is used to pick up the second spring on the second spring feeding track 532 and assemble it onto the inner diameter of the syringe barrel. In this embodiment, through the coordinated action of the supply tray, the feeding track, and the picking component, the first spring feeding device 52 accurately assembles the first spring onto the outer diameter of the syringe barrel, ensuring the accurate position of the spring and providing stable support and sealing for the external structure of the syringe barrel. The second spring feeding device 53 is designed for the inner diameter of the syringe barrel and similarly efficiently and precisely assembles the second spring, enhancing the pressure regulation and sealing performance inside the syringe barrel. The parallel operation of the two devices not only enables the smooth docking of the automated production line but also significantly reduces the errors and labor intensity of manual operations, providing a solid technical guarantee for the high-quality assembly of the piston syringe barrel of the medical practice pen.

[0053] The material taking and assembling mechanism 6 includes a gantry 61, an assembling transfer transmission module 62 and a transfer grasping device 63. The assembling transfer transmission module 62 is arranged on the gantry 61, and the transfer grasping device 63 is arranged on the assembling transfer transmission module 62. The transfer grasping device 63 includes a transverse bracket 631 and two groups of assembling manipulators 632 arranged on the transverse bracket 631. One side of the turntable device 54 is provided with an orientation bushing 64 for positioning the direction of the syringe. The assembling transfer transmission module 62 is used to drive the two groups of assembling manipulators 632 to alternately move between the syringe assembly jig 541, the sizing bushing and the conveying jig 3. The assembling manipulator 632 is provided with a direction adjustment motor 6321 for adjusting the wire feeding direction of the grasped syringe, and a grasping air claw 6322 for grasping the syringe. A CCD camera 611 is arranged on the gantry 61 to photograph the assembly situation and direction of the syringe. In this embodiment, the gantry 61 serves as a stable support platform, ensuring the stability and assembly accuracy of the overall structure. The efficient operation of the assembling transfer transmission module 62 enables the two groups of assembling manipulators 632 to quickly and accurately alternate between the syringe assembly jig 541, the sizing bushing and the conveying jig 3, greatly improving the assembly efficiency and automation level. The design of the orientation bushing 64 accurately realizes the positioning of the syringe wire feeding, reduces the assembly error and ensures the consistency of the product. The introduction of the direction adjustment motor 6321 flexibly adjusts the wire feeding direction of the grasped syringe, further improving the flexibility and adaptability of the assembly. The application of the grasping air claw 6322, with its high reliability and accuracy, ensures the stable grasping and releasing of the syringe, avoids damage and guarantees the product quality. The CCD camera 611 integrated on the gantry 61 photographs the assembly situation and direction of the syringe in real time, providing an intuitive basis for production monitoring and quality control, effectively reducing the defective product rate and improving the overall production management level. In summary, the application of the material taking and assembling mechanism 6 in the assembly of the piston syringe of the medical practice pen significantly improves the production efficiency, quality and automation degree, and is an important technological innovation in the field of medical device manufacturing.

[0054] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A piston syringe assembly device for medical injection practice pens, characterized in that: It includes a circular conveyor line, a positioning mechanism, a conveying fixture, a piston barrel feeding mechanism, a syringe barrel assembling mechanism, and a picking and assembling mechanism; the circular conveyor line is used for conveying the fixture, the positioning mechanism is used for positioning the conveying fixture on the circular conveyor line, and the piston barrel feeding mechanism is used for feeding the piston barrel onto the conveying fixture; The syringe barrel assembling mechanism includes a syringe barrel feeding device, a first spring feeding device, a second spring feeding device, and a turntable device. A syringe barrel assembling fixture is arranged on the turntable device. The syringe barrel feeding device is used for feeding the syringe barrel onto the syringe barrel assembling fixture. The turntable device is used for driving the syringe barrel assembling fixture to sequentially pass through the first spring feeding device and the second spring feeding device. The first spring feeding device is used for installing the first spring on the outer diameter of the syringe barrel, and the second spring feeding device is used for installing the second spring on the inner diameter of the syringe barrel; the picking and assembling mechanism is used for grasping and loading the assembled syringe barrel onto the piston barrel; The picking and assembling mechanism includes a gantry, an assembling transfer transmission module, and a transfer grasping device. The assembling transfer transmission module is arranged on the gantry, and the transfer grasping device is arranged on the assembling transfer transmission module. The transfer grasping device includes a transverse bracket and two groups of assembling manipulators arranged on the transverse bracket. A directional bushing is arranged on one side of the turntable device, and the directional bushing is used for positioning the direction of the syringe barrel.

2. The piston syringe assembly device for medical injection practice pen according to claim 1, wherein: The circular conveyor line includes an upper layer conveyor component, a lower layer conveyor component, a first lifting component, and a second lifting component. A connecting frame is arranged between the upper layer conveyor component and the lower layer conveyor component. The first lifting component and the second lifting component are respectively arranged at both ends of the lower layer conveyor component and the upper layer conveyor component to form a closed-loop conveying channel, and the closed-loop conveying channel is used for conveying the fixture; Multiple groups of the upper layer conveyor components are arranged, and the heads and tails of adjacent two groups of the upper layer conveyor components are connected end to end; multiple groups of the lower layer conveyor components are arranged, and the heads and tails of adjacent two groups of the lower layer conveyor components are connected end to end; the upper layer conveyor component and the lower layer conveyor component are opposite to each other up and down.

3. The piston syringe assembly device for medical injection practice pen according to claim 2, characterized in that: The upper layer conveyor component includes an upper layer conveyor frame, upper layer conveyor rollers, an upper layer conveyor belt, an upper layer conveyor motor, and upper layer conveyor baffles. The upper layer conveyor rollers are arranged at both ends of the upper layer conveyor frame. The upper layer conveyor belt is transmission-connected to the upper layer conveyor rollers. The upper layer conveyor motor is arranged on the connecting frame and is drivingly connected to the upper layer conveyor rollers; the upper layer conveyor baffles are arranged on both sides of the upper layer conveyor frame and form an upper conveying groove on the upper side of the upper layer conveyor belt. The upper layer conveyor belt is used for driving the conveying fixture to convey along the upper conveying groove; The lower layer conveyor component includes a lower layer conveyor frame, lower layer conveyor rollers, a lower layer conveyor belt, a lower layer conveyor motor, and lower layer conveyor baffles. The lower layer conveyor rollers are arranged at both ends of the lower layer conveyor frame. The lower layer conveyor belt is transmission-connected to the lower layer conveyor rollers. The lower layer conveyor motor is arranged on the connecting frame and is drivingly connected to the lower layer conveyor rollers; the lower layer conveyor baffles are arranged on both sides of the lower layer conveyor frame and form a lower conveying groove on the upper side of the lower layer conveyor belt. The lower layer conveyor belt is used for driving the conveying fixture to convey along the lower conveying groove.

4. The piston syringe assembly device for medical injection practice pen according to claim 3, characterized in that: The conveying fixture includes a fixture bottom plate and a fixed placement seat, and the fixed placement seat is provided with a placement groove for placing the piston; the positioning mechanism includes a conveying positioning module and a position positioning module. The conveying positioning module includes a first fixing frame, a conveying positioning cylinder, and a conveying positioning pressing block arranged on the upper-layer conveying component. The conveying positioning cylinder is arranged on the first fixing frame, and the conveying positioning pressing block is arranged on the driving end of the conveying positioning cylinder. The conveying positioning pressing block is provided with a positioning surface facing the conveying direction of the conveying fixture, and the positioning surface is used for positioning the fixture bottom plate on the upper-layer conveying component.

5. The piston syringe assembly device for medical injection practice pen according to claim 4, wherein: The position positioning module is located on one side of the conveying positioning module. The positioning surface is provided with a positioning pressing plate. The position positioning module includes a jacking cylinder and a jacking positioning block. The jacking positioning block faces the positioning pressing plate to clamp and position the fixture bottom plate.

6. The piston syringe assembling device for medical injection practice pen according to claim 5, wherein: The jacking positioning block is provided with a position positioning block, and the fixture bottom plate is provided with a positioning groove. The position positioning block is used to cooperate with the positioning groove to position the fixture bottom plate, and together with the positioning surface, a double-sided positioning structure is formed; a positioning inclined surface is arranged on the upper side of the position positioning block.

7. The piston syringe assembly device for medical injection practice pen according to claim 6, characterized in that: Positioning pin studs are arranged on both sides of the position positioning block where the jacking positioning block is located, and positioning pin holes are arranged on both sides of the fixture bottom plate. The positioning pin holes cooperate with the positioning pin studs to position the fixture bottom plate.

8. The piston syringe assembly device for medical injection practice pen according to claim 1, characterized in that: The piston barrel feeding mechanism includes a piston barrel feeding tray, a piston barrel feeding track, and a piston barrel picking component. One end of the piston barrel feeding track is connected to the piston barrel feeding tray, and the piston barrel picking component is used to pick up the piston barrel on the piston barrel feeding track and place it on the conveying fixture.

9. The piston syringe assembly device for medical injection practice pen according to claim 1, characterized in that: The syringe feeding device includes a syringe feeding tray, a syringe feeding track, and a syringe picking component. The syringe feeding track is connected to the syringe feeding tray, and the syringe picking component is used to pick up the syringe on the syringe feeding track and place it on the syringe assembly fixture; the syringe picking component is provided with a syringe picking rotation module and a syringe clamping module. The syringe picking rotation module is used to drive the syringe clamping module to rotate to adjust the angle of syringe picking, and the syringe clamping module is used to clamp and feed the syringe. The first spring feeding device includes a first spring feeding tray, a first spring feeding track, and a first spring picking component. The first spring feeding track is connected to the first spring feeding tray, and the first spring picking component is used to pick up the first spring on the first spring feeding track and assemble it onto the outer diameter of the syringe. The second spring feeding device includes a second spring feeding tray, a second spring feeding track, and a second spring picking component. The second spring feeding track is connected to the second spring feeding tray, and the second spring picking component is used to pick up the second spring on the second spring feeding track and assemble it onto the inner diameter of the syringe.

10. The piston syringe assembly device for medical injection practice pen according to claim 1, characterized in that: The assembly transfer drive module is used to drive two sets of assembly manipulators to alternately move between the syringe assembly fixture, the sizing bushing, and the conveying fixture; the assembly manipulator is provided with a direction adjustment motor and a gripping air claw, the direction adjustment motor is used to adjust the wire release of the grabbed syringe, and the gripping air claw is used to grab the syringe; a CCD camera is arranged on the gantry to photograph the assembly situation and direction of the syringe.

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