Needleless Injector Assembly Loader

Abstract

This invention provides a needle-free injector assembly carrier, belonging to the field of automated assembly technology for needle-free injectors. It solves the problem of existing carriers carrying only a single material, resulting in large production lines and low processing efficiency. The carrier includes a base for connection to a conveyor line, with an assembly area. The assembly area has a lower tube positioning part, a lower shell positioning part, and an upper shell positioning part arranged at intervals to respectively accommodate and circumferentially limit the lower tube assembly, lower shell assembly, and upper shell assembly of the needle-free injector. This carrier can integrate and transport the lower tube assembly, lower shell assembly, upper shell assembly, and core rod assembly of the needle-free injector. The assembly processes and mechanisms between the major components can be arranged on both sides of the carrier's conveyor line, directly assembling the various components on the carrier into finished products. This design simplifies the production line layout and improves processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of automated assembly technology of needleless injectors, and relates to a carrier, and more particularly to a needleless injector assembly carrier. Background Technology

[0002] Needle-free injectors have many components, such as the upper shell, lower shell, lower tube assembly, and core rod. Each component is composed of multiple parts. In the past, such products were manufactured and assembled manually. Small parts were first pieced together into components, and then the components were connected to form a complete needle-free injector. However, this assembly method is time-consuming and labor-intensive, and each step requires manpower, resulting in high labor costs and low assembly efficiency, especially in terms of hygiene.

[0003] Our company subsequently divided the assembly process of needle-free injectors and designed an automated production line to achieve automated production and assembly of needle-free injectors. However, some problems arose during the design of the production line. For example, after the parts are assembled into components, they need to be transported by a separate conveyor line with a special carrier. Since there are many components to be assembled into finished products (including at least the lower tube assembly, lower shell, and upper shell), multiple independent conveyor lines need to be set up accordingly. This results in a large overall scale of the production line, and the attached loading and unloading mechanisms also increase sharply, which makes it difficult to improve assembly efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a needle-free injector assembly loading device. It solves the technical problem of existing loading devices carrying only a single material, resulting in large-scale production lines and low processing efficiency.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A needleless injector assembly carrier includes a base for connection to a transmission line, characterized in that the base has an assembly area, wherein a lower tube positioning part, a lower shell positioning part, and an upper shell positioning part are arranged at intervals in the assembly area for respectively accommodating and circumferentially limiting the lower tube assembly, lower shell assembly, and upper shell assembly in the needleless injector.

[0007] This carrier includes a base for connecting to a conveyor line. The conveyor line drives the carrier to move in a circular motion. The assembly area of ​​the base has multiple partitions, specifically including at least a lower tube positioning section, a lower shell positioning section, and an upper shell positioning section. The lower tube positioning section can hold the lower tube assembly, the lower shell positioning section can hold the lower shell assembly, and the upper shell positioning section can hold the upper shell assembly. This arrangement allows the three major components of the needle-free injector to be centrally stored on one carrier for transport. The assembly processes and mechanisms between the large components can be arranged on both sides of the conveyor line of the carrier to assemble and process multiple materials on the same carrier. This design simplifies the production line layout and improves processing efficiency.

[0008] In the aforementioned needleless injector assembly carrier, a core rod holder is provided in the assembly area to accommodate the core rod assembly of the needleless injector.

[0009] The assembly area on this carrier also has a core rod support section. The assembled core rod assembly is also placed on the carrier, so all four major components of the needleless injector can be carried by one carrier. Subsequent assembly requires inserting the core rod assembly into the lower tube assembly, screwing the lower shell assembly into the lower tube assembly, and finally screwing the aforementioned semi-finished material into the upper shell assembly. The entire assembly process is carried out at four locations: the lower tube positioning section, the lower shell positioning section, the upper shell positioning section, and the core rod support section. This carrier design has good adaptability and simplifies and optimizes the production line layout, greatly improving processing efficiency.

[0010] In the aforementioned needleless injector assembly, the lower tube positioning part, lower shell positioning part, upper shell positioning part, and core rod mounting part are arranged in a matrix.

[0011] The lower tube positioning part, lower shell positioning part, upper shell positioning part and core rod mounting part of this application are located at the four corners of the square. During assembly, the material handling mechanism moves in a straight line in the X or Y direction. The matrix layout can adapt to the rapid movement and switching between any two parts of the material handling mechanism or assembly mechanism, and the production efficiency is further improved.

[0012] In the aforementioned needleless injector assembly, the lower tube positioning part and the core rod mounting part are arranged side by side, the lower shell positioning part and the upper shell positioning part are arranged side by side, and the lower tube positioning part and the lower shell positioning part are arranged in parallel.

[0013] In this application, the lower tube positioning part and the core rod mounting part are arranged side by side. This design makes the carrier more suitable for assembling the lower tube assembly and the core rod assembly. With these two adjacent to each other, during assembly, the pick-and-place mechanism can directly clamp the core rod assembly, move it linearly to the lower tube positioning part, and insert it. This minimizes the movement path and maximizes assembly efficiency. The lower tube positioning part and the lower shell positioning part are also arranged side by side. After the core rod assembly and the lower tube assembly are assembled, the pick-and-place mechanism clamps the lower shell assembly, moves it linearly to the lower tube positioning part, fits it onto the lower shell assembly, and screws it in, completing the assembly. This design minimizes the movement path of the pick-and-place mechanism during the assembly of three parts, maximizing assembly efficiency.

[0014] After the above three materials are assembled, they can be removed as a whole and finally moved to the upper shell positioning part and inserted into the upper shell assembly. This basically completes the overall assembly process of the needleless injector. The layout of the lower tube positioning part, core rod support part, lower shell positioning part and upper shell positioning part is more suitable for subsequent mechanical picking and moving, thereby greatly improving the assembly efficiency.

[0015] In the aforementioned needleless injector assembly, the lower tube positioning part includes a vertically upward protruding columnar protrusion, a positioning groove with an upward-facing opening on the columnar protrusion, a limiting groove on the inner wall of the positioning groove, the limiting groove extending upward to the opening of the positioning groove, and the limiting groove having a trapezoidal structure that is wider at the top and narrower at the bottom.

[0016] The lower tube positioning part of this application has a columnar protrusion structure design. The positioning groove on it is a clearance position for accommodating the lower tube assembly. A limiting groove is opened on the inner wall of the positioning groove. The limiting groove fits with the protrusion on the outer periphery of the lower tube assembly and is used to circumferentially limit the lower tube assembly placed at the lower tube positioning part, ensuring the alignment accuracy of the assembly and improving the processing efficiency.

[0017] The limiting groove of this application has a trapezoidal structure that is wider at the top and narrower at the bottom. The wider top allows the protrusion on the outer periphery of the lower tube assembly to enter the inner side of the limiting groove better, while the narrower bottom allows the protrusion to be guided by the inclined trapezoidal profile side after entering and gradually straightened, and finally accurately positioned at the narrowest point, improving the accuracy of subsequent assembly, eliminating the need for subsequent alignment processes, and indirectly improving assembly efficiency.

[0018] In the aforementioned needleless injector assembly, the radial cross-section of the positioning groove is circular and the inner wall of the positioning groove protrudes radially with multiple constricted portions. These constricted portions are configured to allow the inner diameter of the positioning groove to decrease in stages from the groove opening to the groove bottom.

[0019] The inner wall of the positioning groove 1 in this application is designed with multiple constriction sections. The constriction section design makes the diameter of the groove opening of the positioning groove 1 large and the diameter of the groove bottom small. When the lower tube assembly is inserted, the larger groove opening makes it easier to insert. The subsequent phased reduction of the diameter can effectively prevent the lower tube assembly from being inserted off-center and guide it into place. At the same time, it is positioned at the constriction section with the smallest diameter to prevent offset, so that the lower tube assembly is aligned with the center of the positioning groove 1, thereby improving the accuracy of subsequent assembly.

[0020] In the aforementioned needleless injector assembly, the lower shell positioning part includes a cylindrical protrusion with an upper opening and a limiting pad fixed inside the cylindrical protrusion. The limiting pad has a protruding rib that mates with a straight groove on the end of the lower shell assembly of the needleless injector. The cross-section of the rib in the width direction is a trapezoidal structure that is narrow at the top and wide at the bottom.

[0021] The main body of the lower shell positioning part of this application is a cylindrical protrusion, which can facilitate the insertion and positioning of the lower shell assembly. A limiting pad is fixed at the bottom of the inner side of the cylindrical protrusion. The limiting pad has protruding ribs for cooperating with the straight groove at the bottom of the lower shell assembly to circumferentially position the lower shell assembly placed at the lower shell positioning part. This design can ensure that the lower shell is always placed at the lower shell positioning part in the same position, meeting the assembly requirements of various places.

[0022] In the above-mentioned needleless injector assembly, the upper shell positioning part includes a vertically upward protruding columnar protrusion 2, a positioning groove 2 with an upward-facing opening on the columnar protrusion 2, a limiting groove 2 is formed on the inner wall of the positioning groove 2, and the limiting groove 2 extends upward to the opening of the positioning groove 2.

[0023] The upper shell positioning part is also a protruding columnar structure. The positioning groove 2 on it is used to support the insertion of the upper shell. There is a protruding part in the circumferential direction of the upper shell. This part cooperates with the limiting groove 2 to achieve circumferential positioning. The position of each component placed on the carrier can be restricted and it can also be positioned in the circumferential direction. This allows the components to be assembled directly without checking the position during assembly and docking, which greatly improves the assembly efficiency while ensuring the assembly accuracy.

[0024] In the aforementioned needleless injector assembly, the core rod receiving part includes a vertically upward protruding columnar protrusion three, which has a top-open receiving cavity. The columnar protrusion three is provided with an annular stepped groove at the top opening of the receiving cavity for placing the core rod gasket.

[0025] The cavity on the core rod mounting section of this application is used to accommodate a long strip-shaped core rod assembly. A stepped groove, concentric with the cavity, is opened on the core rod mounting section. A gasket is placed in the stepped groove. After the gasket is placed in the stepped groove, the core rod is inserted from the center of the gasket. The core rod is hung on the core rod mounting section by the gasket and awaits removal. Subsequently, a clamp picks up the core rod carrying the gasket and inserts it into the lower tube assembly to complete the assembly. This design places the assembly process of the gasket and the core rod assembly on the same carrier, further improving the adaptability of the carrier. At the same time, it keeps the gasket and the core rod assembly with good concentricity, which facilitates subsequent assembly and further improves the assembly efficiency.

[0026] In the aforementioned needleless injector assembly, the columnar protrusion three is provided with a clearance groove extending downward from the top of the columnar protrusion three. The clearance groove communicates with the stepped groove and the receiving cavity. The clearance groove laterally penetrates the columnar protrusion three and forms notches on both opposite sides of the columnar protrusion three.

[0027] An avoidance groove is provided at the top of the columnar protrusion three. The avoidance groove extends through the side of the top of the columnar protrusion three to form a notch. The notch is used to avoid the clamp. The clamp enters from the notch and can clamp the core rod at the accessory below the pad. After clamping the core rod, the pad can be removed at the same time. This design effectively simplifies the assembly steps of assembling the core rod and pad into the lower tube assembly, improves assembly efficiency, and ensures high concentricity and good assembly accuracy of the core rod, pad and lower tube assembly during assembly.

[0028] Compared with existing technologies, the advantages of this product are:

[0029] 1. This carrier can integrate and store the lower tube assembly, lower shell assembly, upper shell assembly and core rod assembly of the needleless injector. The assembly process and the assembly mechanism involved between the major components can be arranged on both sides of the carrier's conveyor line, and the various components on the carrier can be directly assembled into finished products. This design simplifies the production line layout and improves processing efficiency.

[0030] 2. The lower tube positioning part, lower shell positioning part, upper shell positioning part and core rod mounting part are located at the four corners of the square. During assembly, the material handling mechanism moves in a straight line in the X or Y direction. The matrix layout can adapt to the rapid movement and switching between any two parts of the material handling mechanism or assembly mechanism, further improving production efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of this utility model;

[0032] Figure 2 This is a structural schematic diagram of the core rod mounting part of this utility model;

[0033] Figure 3This is a structural schematic diagram of the core rod mounting part of the core rod assembly of this utility model;

[0034] Figure 4 This is a cross-sectional view of the lower tube positioning part of this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the lower tube positioning part with the lower tube assembly of this utility model;

[0036] Figure 6 This is a schematic diagram of the lower shell positioning part of this utility model;

[0037] Figure 7 This is a schematic diagram of the upper shell positioning part of the present invention.

[0038] In the diagram, 1 is the base; 2 is the assembly area; 21 is the core rod mounting part; 211 is the receiving cavity; 212 is the stepped groove; 213 is the clearance groove; 214 is the notch; 22 is the lower tube positioning part; 221 is the positioning groove one; 222 is the limiting groove one; 223 is the closing part; 23 is the lower shell positioning part; 231 is the limiting pad; 232 is the cylindrical protrusion; 233 is the protruding rib; 24 is the upper shell positioning part; 241 is the positioning groove two; 242 is the limiting groove two. Detailed Implementation

[0039] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0040] Example 1

[0041] like Figure 1The needle-free injector assembly carrier shown is used to carry the four main components of the needle-free injector: the upper shell assembly, the lower shell assembly, the core rod with a gasket (i.e., the core rod assembly), and the lower tube assembly. These four components are independently produced or assembled on other production lines and are ultimately transferred to this carrier. The carrier includes a base 1 for connection to a conveyor line. The base 1 can be directly fixed to the conveyor belt of the conveyor line and moved linearly by the conveyor belt. The base 1 has an assembly area 2, which is a base plate fixed to the base 1 with bolts. The assembly area 2 can be replaced by changing the base plate. By redesigning the assembly area 2, more products can be accommodated. At the assembly area 2, a lower tube positioning part 22, a lower shell positioning part 23, and an upper shell positioning part 24 are arranged at intervals to respectively accommodate and circumferentially limit the lower tube assembly, lower shell assembly, and upper shell assembly of the needle-free injector. This carrier includes a base 1, which is connected to a conveyor line. The conveyor line drives the carrier to move in a cycle. Multiple partitions are set in the assembly area 2 of the base 1, specifically including at least a lower tube positioning part 22, a lower shell positioning part 23, and an upper shell positioning part 24. The lower tube positioning part 22 can carry and place the lower tube assembly, the lower shell positioning part 23 can carry and place the lower shell assembly, and the upper shell positioning part 24 can carry and place the upper shell assembly. This arrangement can centrally store the three major components of the needleless injector on one carrier for transport. The assembly process and related mechanisms between the major components can be arranged on both sides of the conveyor line of the carrier to assemble and process multiple materials on the same carrier. This design simplifies the production line layout and improves processing efficiency.

[0042] Furthermore, a core rod holder 21 is provided at assembly area 2 to accommodate the core rod assembly from the needleless injector. There is also a core rod holder 21 at assembly area 2 on this carrier, where the assembled core rod assembly is also placed. Thus, all four major components of the needleless injector can be carried by a single carrier. Subsequent assembly requires inserting the core rod assembly into the lower tube assembly, screwing the lower shell assembly to the lower tube assembly, and finally screwing the semi-finished material to the upper shell assembly. The entire assembly process occurs at four locations: the lower tube positioning part 22, the lower shell positioning part 23, the upper shell positioning part 24, and the core rod holder 21. This carrier design offers good adaptability and effectively simplifies and optimizes the production line layout, significantly improving processing efficiency.

[0043] Preferably, the lower tube positioning part 22, the lower shell positioning part 23, the upper shell positioning part 24, and the core rod mounting part 21 are arranged in a matrix. In this application, the lower tube positioning part 22, the lower shell positioning part 23, the upper shell positioning part 24, and the core rod mounting part 21 are located at the four corners of a square. During assembly, the material handling mechanism moves in a straight line in the X or Y direction. The matrix layout can accommodate the rapid movement and switching between any two locations of the material handling mechanism or the assembly mechanism, further improving production efficiency.

[0044] Preferably, the lower tube positioning part 22 and the core rod mounting part 21 are arranged side by side, the lower shell positioning part 23 and the upper shell positioning part 24 are arranged side by side, and the lower tube positioning part 22 and the lower shell positioning part 23 are arranged in parallel. The side-by-side arrangement of the lower tube positioning part 22 and the core rod mounting part 21 in this application makes the carrier more suitable for assembling the lower tube assembly and the core rod assembly. With these two adjacent to each other, during assembly, the pick-and-place mechanism can directly clamp the core rod assembly, move it linearly to the lower tube positioning part 22, and insert it downwards, resulting in the shortest movement path and the most efficient assembly. The side-by-side arrangement of the lower tube positioning part 22 and the lower shell positioning part 23 allows the pick-and-place mechanism to clamp the lower shell assembly after the core rod assembly and lower tube assembly are assembled, move it linearly to the lower tube positioning part 22, fit it onto the lower shell assembly, and screw it in, completing the assembly. This design minimizes the movement path of the pick-and-place mechanism during the assembly of three materials, resulting in the most efficient assembly. After the above three materials are assembled, they can be removed as a whole and finally moved to the upper shell positioning part 24 and inserted into the upper shell assembly. This basically completes the overall assembly process of the needleless injector. The layout of the lower tube positioning part 22, the core rod bearing part 21, the lower shell positioning part 23 and the upper shell positioning part 24 is more suitable for subsequent mechanical picking and moving, thereby greatly improving the assembly efficiency.

[0045] The specific structure of the lower tube positioning part 22 in this application is as follows: The lower tube positioning part 22 includes a vertically upward protruding columnar protrusion. A positioning groove 221 with an upward-facing opening is provided on the columnar protrusion. A limiting groove 222 is provided on the inner wall of the positioning groove 221. The limiting groove 222 extends upward to the opening of the positioning groove 221, and its outline is a trapezoidal structure that is wider at the top and narrower at the bottom. The lower tube positioning part 22 of this application features a columnar protrusion structure. The positioning groove 221 on it serves as a clearance position for accommodating the lower tube assembly. The limiting groove 222 on the inner wall of the positioning groove 221 engages with the protrusion on the outer periphery of the lower tube assembly, circumferentially limiting the lower tube assembly placed at the lower tube positioning part 22, ensuring the alignment accuracy of the assembly and improving processing efficiency. The limiting groove 222 of this application has a trapezoidal structure that is wider at the top and narrower at the bottom. The wider top allows the protrusion on the outer periphery of the lower tube assembly to enter the inner side of the limiting groove 222 better, while the narrower bottom allows the protrusion to be guided by the inclined trapezoidal contour side to gradually straighten its position after entering, and finally be accurately positioned at the narrowest point, improving the accuracy of subsequent assembly and eliminating the need for subsequent alignment processes, thus indirectly improving assembly efficiency. Preferably, the positioning groove 221 has a circular radial cross-section, and the inner wall of the positioning groove 221 has multiple constriction portions 223 protruding radially. The multiple constriction portions 223 are configured to allow the inner diameter of the positioning groove 221 to decrease in stages from the groove opening to the groove bottom. The inner wall of the positioning groove 221 of this application is designed with multiple constriction portions 223. The design of the constriction portions 223 makes the diameter of the opening of the positioning groove 221 large and the diameter of the bottom of the groove small. When the lower tube assembly is inserted, the larger opening makes it easier to insert. The subsequent phased reduction of the diameter can effectively prevent the lower tube assembly from being inserted off-center and guide it into place. At the same time, it is positioned at the constriction portion 223 with the smallest diameter to prevent offset, so that the lower tube assembly is aligned with the center of the positioning groove 221, thereby improving the accuracy of subsequent assembly.

[0046] The specific structure of the lower shell positioning part 23 in this application is as follows: The lower shell positioning part 23 includes a cylindrical protrusion 232 with an open upper end and a limiting pad 231 fixed inside the cylindrical protrusion 232. The limiting pad 231 has a protruding rib 233 that mates with a straight groove on the end of the lower shell assembly of the needleless syringe. The cross-section of the rib 233 in the width direction is a trapezoidal structure that is narrower at the top and wider at the bottom. The main body of the lower shell positioning part 23 in this application is a cylindrical protrusion, which facilitates the insertion and positioning of the lower shell assembly. The limiting pad 231 is fixed at the bottom of the inner side of the cylindrical protrusion 232. The limiting pad 231 has a protruding rib 233 that mates with the straight groove at the bottom of the lower shell assembly to circumferentially position the lower shell assembly placed at the lower shell positioning part 23. This design ensures that the lower shell is always placed at the lower shell positioning part 23 in the same position, meeting the assembly requirements of various locations.

[0047] The specific structure of the upper shell positioning part 24 of this application is as follows: The upper shell positioning part 24 includes a vertically upward protruding columnar protrusion, on which a positioning groove 241 with an upward-facing opening is provided. A limiting groove 242 is provided on the inner wall of the positioning groove 241, and the limiting groove 242 extends upward to the opening of the positioning groove 241. The upper shell positioning part 24 is also a protruding columnar structure, and the positioning groove 241 provided on it is used to support the insertion of the upper shell. There is a protruding part in the circumferential direction of the upper shell, which cooperates with the limiting groove 242 to achieve circumferential positioning. The position of each component placed on the carrier can be restricted and it can also be positioned circumferentially, so that the position of each component does not need to be checked during assembly and docking, and it can be directly assembled, which greatly improves the assembly efficiency while ensuring the assembly accuracy.

[0048] The specific structure of the core rod mounting part 21 of this application is as follows: The core rod mounting part 21 includes a vertically upward protruding columnar protrusion three, the columnar protrusion three has a top-open receiving cavity 211, and the columnar protrusion three is provided with an annular stepped groove 212 at the top opening of the receiving cavity 211 for placing the core rod gasket. The receiving cavity 211 on the core rod mounting part 21 of this application is used to accommodate the elongated core rod assembly. A stepped groove 212 concentric with the receiving cavity 211 is opened on the core rod mounting part 21. The stepped groove 212 is used to place a gasket. After the gasket is placed in the stepped groove 212, the core rod is inserted from the center of the gasket. The core rod is hung on the core rod mounting part 21 by the gasket and waits to be removed. Subsequently, the clamp picks up the core rod carrying the gasket and inserts it into the lower tube assembly to complete the assembly. This design puts the assembly process of the gasket and the core rod assembly on the same carrier, which further improves the adaptability of the carrier. At the same time, it keeps the gasket and the core rod assembly with good concentricity, which facilitates subsequent assembly and further improves the assembly efficiency. Preferably, the columnar protrusion three has a clearance groove 213 extending downward from the top of the columnar protrusion three. The clearance groove 213 communicates with the stepped groove 212 and the receiving cavity 211. The clearance groove 213 laterally penetrates the columnar protrusion three and forms notches 214 on both opposite sides of the columnar protrusion three. The notches 214 are used to avoid the clamp. The clamp enters through the notches 214 and can clamp the core rod at the attachment below the gasket. After clamping the core rod, the gasket can be removed at the same time. This design effectively simplifies the assembly steps of assembling the core rod and gasket into the lower tube assembly, improves assembly efficiency, and ensures high concentricity and good assembly accuracy of the core rod, gasket and lower tube assembly during assembly.

[0049] The assembly process of the parts inside the carrier of this application is as follows: First, a gasket is placed on the core rod bearing part 21, then the core rod is placed. Then, the core rod assembly is grasped and moved to the left to the lower tube positioning part 22, and then moved down to insert the core rod assembly into the lower tube assembly to form semi-finished product one. At this time, semi-finished product one is in an inverted state. Then, the lower shell is removed from the lower shell positioning part 23, moved to the lower tube positioning part 22, and lowered to fit onto semi-finished product one. As it moves, it is screwed to tighten the lower shell and semi-finished product one together to form semi-finished product two. At this time, semi-finished product two is in an inverted state. Then, semi-finished product two is clamped and rotated to release the inverted state, and the end where the lower shell is located is reinserted into the lower tube assembly. At the lower shell positioning part 23, some accessories, such as ball bearings, are exposed at the end after the semi-finished product 2 is rotated and released from its inverted state. After the assembly process of these accessories is completed, they are put back into the lower shell positioning part 23, and the semi-finished product 2 is grabbed, rotated into an inverted state, and inserted into the upper shell positioning part 24 to be snapped and fixed to the upper shell inside to form a finished product. Then, the finished product is clamped, released from its inverted state, moved and inserted into the lower shell positioning part 23 to await transfer, inspection, and unloading processes. This design allows multiple assembly processes to be carried out using the same carrier, and the workstations can be carried out sequentially, optimizing the production line and significantly improving assembly efficiency.

[0050] Example 2

[0051] This is another arrangement of the lower tube positioning part 22, lower shell positioning part 23, upper shell positioning part 24 and core rod bearing part 21 in this application. In this embodiment, the other structures are basically the same as in embodiment one. The difference is that the lower tube positioning part 22 and core rod bearing part 21 are arranged side by side, the lower shell positioning part 23 and upper shell positioning part 24 are arranged side by side, and the lower tube positioning part 22 and lower shell positioning part 23 are arranged side by side. This design can play a similar role to the arrangement in embodiment one. The picking and placing mechanism can move linearly to transfer materials, which is highly efficient.

[0052] Example 3

[0053] This is another implementation of the connection method between the base 1 and the transmission line in this application. In this embodiment, the other structures are basically the same as in embodiment one. The difference is that: the bottom of the base 1 can be designed with rollers, which are slidably connected to the transmission line by the pulleys. By pushing the base 1 to slide forward, the same technical effect as in embodiment one can be achieved.

[0054] Example 4

[0055] This is another implementation of the connection method between the base 1 and the transmission line of this application. In this embodiment, the other structures are basically the same as those in Embodiment 1. The difference is that the bottom and side of the base 1 are provided with sliding grooves, and a track is designed on the transmission line. The track has an edge that cooperates with the bottom and side. The base 1 is positioned by interlocking the edges, and the base 1 is moved forward by pushing it. This design can achieve the same technical effect as Embodiment 1.

[0056] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A needleless injector assembly carrier, comprising a base (1) for connection to a transmission line, characterized in that, The base (1) has an assembly area (2), and the assembly area (2) is provided with a lower tube positioning part (22), a lower shell positioning part (23) and an upper shell positioning part (24) arranged at intervals to accommodate and circumferentially limit the lower tube assembly, lower shell assembly and upper shell assembly in the needleless injector respectively.

2. The needleless injector assembly loading device according to claim 1, characterized in that, The assembly area (2) is provided with a core rod holder (21) for accommodating the core rod assembly in the needleless injector.

3. The needleless injector assembly loading device according to claim 2, characterized in that, The lower tube positioning part (22), the lower shell positioning part (23), the upper shell positioning part (24) and the core rod mounting part (21) are arranged in a matrix.

4. The needleless injector assembly loading device according to claim 3, characterized in that, The lower tube positioning part (22) and the core rod mounting part (21) are arranged side by side, the lower shell positioning part (23) and the upper shell positioning part (24) are arranged side by side, and the lower tube positioning part (22) and the lower shell positioning part (23) are arranged in parallel.

5. The needleless injector assembly loading device according to any one of claims 1-4, characterized in that, The lower tube positioning part (22) includes a columnar protrusion protruding vertically upward. A positioning groove (221) with an upward-facing opening is provided on the columnar protrusion. A limiting groove (222) is provided on the inner wall of the positioning groove (221). The limiting groove (222) extends upward to the opening of the positioning groove (221). The contour of the limiting groove (222) is a trapezoidal structure that is wider at the top and narrower at the bottom.

6. The needleless injector assembly loading device according to claim 5, characterized in that, The radial cross section of the positioning groove (221) is circular and the inner wall of the positioning groove (221) protrudes radially with multiple constriction portions (223). The multiple constriction portions (223) are configured to allow the inner diameter of the positioning groove (221) to decrease in stages from the groove opening position to the groove bottom position.

7. The needleless injector assembly loading device according to any one of claims 1-4, characterized in that, The lower shell positioning part (23) includes a cylindrical protrusion (232) with an opening at the upper end and a limiting pad (231) fixed inside the cylindrical protrusion (232). The limiting pad (231) has a protruding rib (233) that cooperates with the straight groove on the end of the lower shell assembly of the needleless injector. The cross section of the rib (233) in the width direction is a trapezoidal structure that is narrow at the top and wide at the bottom.

8. The needleless injector assembly loading device according to any one of claims 1-4, characterized in that, The upper shell positioning part (24) includes a columnar protrusion two that protrudes vertically upward. The columnar protrusion two has a positioning groove two (241) with the slot opening facing upward. The inner wall of the positioning groove two (241) has a limiting groove two (242) that extends upward to the slot opening of the positioning groove two (241).

9. The needleless injector assembly loading device according to any one of claims 2-4, characterized in that, The core rod mounting part (21) includes a vertically upward protruding columnar protrusion three, which has a top-open receiving cavity (211). The columnar protrusion three is provided with an annular stepped groove (212) at the top opening of the receiving cavity (211) for placing the core rod gasket.

10. The needleless injector assembly loading device according to claim 9, characterized in that, The columnar protrusion 3 has a relief groove (213) extending downward from the top of the columnar protrusion 3. The relief groove (213) communicates with the step groove (212) and the receiving cavity (211). The relief groove (213) penetrates the columnar protrusion 3 laterally and forms notches (214) on both opposite sides of the columnar protrusion 3.

Images