An assembly device for a prefilled syringe auto-injection pen

Abstract

The present invention provides an assembly device for a pre-filled syringe auto-injector pen, comprising a first base, a second base, a positioning component and a pressing component; by connecting the positioning component between the first base and the second base, the positioning component is provided with a positioning groove for installing the injector pen, and the pressing component is slidably connected to the surface of the second base and can move relative to the second base. When the upper barrel and the lower barrel of the injector pen are respectively placed in the positioning groove, the side surface of the pressing plate abuts against the upper barrel, and the pressing plate is pushed in the direction of the upper barrel by the handle, so as to realize the assembly of the injector pen by the cooperation of the upper barrel and the lower barrel of the injector pen. Using this assembly device to assemble the injector pen replaces the conventional electromechanical equipment with a complex space positioning device, has a high success rate, not only improves the yield and assembly efficiency, but also is convenient for technicians to operate and maintain.

Description

Technical Field

[0001] The present invention belongs to the technical field of pharmaceutical production equipment, and particularly relates to an assembly device for a pre-filled syringe automatic injection pen. Background Art

[0002] Pre-filled syringes are widely used in the packaging and storage of biological drugs, and are applied to medical and battlefield emergency rescue products such as protein products, biological vaccines, aqueous injections, monoclonal antibodies, gene drugs, snake venom sera, etc. They have a high safety factor and no secondary pollution. When pre-filled syringes are combined with automatic injection pens, the operation is simple and the injection is convenient. With the development of society, the demand is increasing rapidly.

[0003] The patent document with the patent application number CN202223439589.4 discloses a semi-automatic assembly machine for an injection pen, as shown in the accompanying drawings of the specification Figure 11 , which includes a frame 1. The interior of the frame 1 is a closed space. One side of the frame 1 is provided with a feed inlet that can be turned up by a rotating plate 10; a rotating module 2 is rotatably arranged at the feed inlet of the frame 1. A transplanting module 3 is arranged in the closed space of the frame and is configured to transplant the pen barrel, pre-filled needle and pen cap on the rotating module 2; an assembly platform 4 is arranged in the closed space of the frame; a pressing module 5 is horizontally movably arranged above the assembly platform 4 and is used to assemble the pen barrel, pre-filled needle and pen cap located on the assembly platform into a product through secondary pressing, and move the assembled product into a receiving box 010; this device requires manual placement of the pen barrel, pre-filled needle and pen cap in the corresponding fixtures, and then the transplanting module, pressing module and assembly platform need to cooperate repeatedly to assemble the pen barrel, pre-filled needle and pen cap into an injection pen.

[0004] At present, the device for assembling a pre-filled syringe automatic injection pen has a relatively complex structure, high cost, large floor area, high technical requirements for operators, and is not convenient for maintenance. Therefore, there is an urgent need for technological upgrading of the device for assembling a pre-filled syringe automatic injection pen. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention provides an assembly device for a pre-filled syringe automatic injection pen, which not only has a small floor area, low cost, simple operation, but also has high assembly efficiency.

[0006] Specifically, the present invention is realized through the following technical solutions:

[0007] The present invention provides an assembly device for a pre-filled syringe automatic injection pen, including:

[0008] A first base, including a first support platform and a baffle connected to each other, the upper surface of the first support platform is perpendicularly arranged with the side surface of the baffle;

[0009] A second base, which is disposed opposite to the first base. The second base includes a second support platform and a third support platform connected to each other. The upper surface of the second support platform is perpendicular to the side surface of the third support platform.

[0010] A positioning assembly, which is disposed between the first base and the second base. The positioning assembly includes a positioning plate. The two ends of the positioning plate are respectively located on the first support platform and the second support platform. Positioning grooves for fixing the upper pen barrel and the lower pen barrel of the injection pen are provided on the positioning plate; and

[0011] A pressing assembly, which is disposed on the second base. The pressing assembly includes a pressing plate and a push rod. The pressing plate is slidably connected to the upper surface of the third support platform. The push rod passes through the pressing plate and is movably connected to the second base;

[0012] When the upper pen barrel and the lower pen barrel of the injection pen are placed in the positioning grooves of the positioning assembly, hold the push rod and move it towards the first base. The push rod drives the pressing plate to move towards the first base, so that the side surface of the pressing plate abuts against the upper pen barrel of the injection pen and moves towards the first base, realizing the mutual cooperation between the upper pen barrel and the lower pen barrel to complete the assembly of the injection pen.

[0013] As a preferred technical solution of the present invention, the second support platform is provided with a mounting groove, a through hole and a rotating shaft. The mounting groove is arranged in a direction perpendicular to the plane of the second support platform. The through hole is arranged in a direction parallel to the plane of the second support platform. The through hole is communicated with the mounting groove. The rotating shaft is fixedly connected in the through hole;

[0014] The upper surface of the third support platform is provided with a first sliding groove, a second sliding groove and a mounting hole arranged at intervals. The mounting hole is located between the first sliding groove and the second sliding groove, and the mounting hole is communicated with the mounting groove;

[0015] The pressing plate is provided with an insertion hole. One end of the push rod sequentially passes through the insertion hole, the mounting hole and the mounting groove and is rotatably connected to the rotating shaft.

[0016] As a preferred technical solution of the present invention, the push rod includes a handle and a movable rod. One end of the movable rod is connected to the handle. The other end of the movable rod is connected with a fixing hole. After the movable rod passes through the insertion hole, it is sleeved on the rotating shaft through the fixing hole, so that the push rod rotates relative to the rotating shaft;

[0017] The insertion hole is set to be circular, and the diameter of the insertion hole is larger than the diameter of the movable rod.

[0018] As a preferred technical solution of the present invention, the pressing assembly further includes a first slider and a second slider, the first slider and the second slider are connected to the pressing plate at intervals, and the pressing plate is slidably connected to the first chute and the second chute through the first slider and the second slider respectively, so that the pressing plate reciprocates on the upper surface of the third support platform.

[0019] As a preferred technical solution of the present invention, the positioning assembly further includes a positioning block, the positioning block is located at the bottom of the positioning groove and is close to the first base, and the positioning block is used to cooperate with the long hole on the surface of the lower barrel of the injection pen to realize the axial positioning of the lower barrel.

[0020] As a preferred technical solution of the present invention, the positioning groove is arranged along the length direction of the positioning plate, the cross section of the positioning groove is semicircular, and the positioning groove cooperates with the upper barrel and the lower barrel of the injection pen to realize the radial positioning of the upper barrel and the lower barrel of the injection pen.

[0021] As a preferred technical solution of the present invention, the positioning groove is provided with one or more, preferably 2, 3, 4, 5 or 6.

[0022] As a preferred technical solution of the present invention, the positioning assembly further includes a mounting plate, the mounting plate extends from the positioning plate towards the direction of the first base, the height of the mounting plate is less than the height from the bottom of the positioning groove to the bottom of the positioning plate, and the mounting plate is used to hold the lower cap of the lower barrel of the injection pen.

[0023] As a preferred technical solution of the present invention, the support plate further includes a limiting platform, the positioning plate further includes a receiving platform, the receiving platform is located at one end of the positioning groove facing the second base, and the receiving platforms are provided on both sides of each positioning groove, and the upper surface of the receiving platform is flush with the upper surface of the third support platform, which is convenient for the pressing plate to reciprocate on the upper surface of the third support platform and the upper surface of the receiving platform.

[0024] As a preferred technical solution of the present invention, the inner wall of the positioning groove is further provided with a limiting member, the limiting member is arranged in an arc shape, and the distance from the limiting member to the center of its arc is less than the radius of the positioning groove, so as to realize the radial positioning of the upper barrel and the lower barrel of the injection pen.

[0025] The present invention provides an assembly device for a pre-filled syringe auto-injector pen, comprising a first base, a second base, a positioning component and a pressing component; by connecting the positioning component between the first base and the second base, the positioning component is provided with a positioning groove for installing the injector pen, and the pressing component is slidably connected to the surface of the second base and can move relative to the second base. When the upper barrel and the lower barrel of the injector pen are respectively placed in the positioning groove, the side surface of the pressing plate abuts against the upper barrel, and the pressing plate is pushed by the handle to move in the direction of the upper barrel, so as to realize the assembly of the injector pen by the cooperation of the upper barrel and the lower barrel of the injector pen.

[0026] The beneficial effects of the present invention compared with the prior art:

[0027] (1) Through the positioning component, the axial positioning and spatial radial positioning of the upper barrel and the lower barrel of the auto-injector pen are realized, replacing the conventional complex device for spatial positioning of electromechanical equipment, with a high success rate. It not only improves the yield rate and assembly efficiency, but also facilitates the operation and maintenance of technicians.

[0028] (2) The assembly device for the pre-filled syringe auto-injector pen has a low cost, a small floor area, flexible layout, and improves the production quality and efficiency. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram before the operation of the assembly device for the auto-injector pen;

[0030] Figure 2 It is a schematic structural diagram of the first base;

[0031] Figure 3 It is a structural diagram of the second base;

[0032] Figure 4 It is a schematic structural diagram of the pressing component;

[0033] Figure 5 It is a schematic structural diagram of the cooperation between the second base and the pressing component;

[0034] Figure 6 It is a schematic structural diagram of the positioning component;

[0035] Figure 7 It is a schematic structural diagram of the positioning groove;

[0036] Figure 8 It is a schematic structural diagram after the operation of the assembly device for the auto-injector pen;

[0037] Figure 9 It is another schematic structural diagram of the first base;

[0038] Figure 10 It is another schematic structural diagram before the operation of the assembly device for the auto-injector pen;

[0039] Figure 11 Schematic structural diagram of the assembly device for Comparative Example 1.

[0040] Among them, 100 is the assembly device; 10 is the first base; 11 is the baffle; 12 is the first support platform; 101 is the fixing groove; 20 is the second base; 21 is the second support platform; 211 is the installation groove; 212 is the through hole; 22 is the third support platform; 221 is the first sliding groove; 222 is the second sliding groove; 223 is the installation hole; 30 is the pressing component; 31 is the pressing plate; 311 is the insertion hole; 32 is the first slider; 33 is the second slider; 34 is the push rod; 341 is the handle; 342 is the movable rod; 40 is the positioning component; 41 is the positioning plate; 411 is the positioning groove; 412 is the receiving platform; 413 is the groove wall; 414 is the limiting piece; 415 is the abutting surface; 42 is the positioning block; 43 is the mounting plate; 50 is the injection pen; 51 is the upper pen barrel; 52 is the lower pen barrel; 53 is the lower pen cap. Detailed implementation manners

[0041] Example 1

[0042] As Figure 1 and Figure 2 shown, an assembly device 100 for a pre-filled syringe automatic injection pen includes a first base 10, a second base 20, a pressing component 30, and a positioning component 40. Among them, the pressing component 30 is slidably connected to the second base 20, the positioning component 40 is located between the first base 10 and the second base 20, and one end of the positioning component 40 is connected to the first base 10 and the other end is connected to the second base 20.

[0043] The first base 10 includes a baffle 11 and a first support platform 12. The first support platform 12 and the baffle 11 are connected to each other. For example, the first support platform 12 and the baffle 11 are integrally formed. The baffle 11 is used to abut against the lower pen cap 53 of the injection pen, facilitating the pressing component 30 to push the upper pen barrel 51 of the injection pen to cooperate with the lower pen barrel 52 to achieve the assembly of the injection pen. Among them, the planes of the first support platform 12 and the baffle 11 are set as rectangles.

[0044] Please refer to Figure 3 , Figure 4 and Figure 5 , the second base 20 is disposed opposite to the first base 10. The second base 20 includes a second support platform 21 and a third support platform 22. The upper surface of the second support platform 21 is perpendicular to the side surface of the third support platform 22. For example, the second support platform 21 and the third support platform 22 are integrally formed. One end of the positioning component 40 is located on the upper surface of the first support platform 12, and the other end is located on the upper surface of the second support platform 21. Among them, both the first base 10 and the second base 20 are L-shaped.

[0045] The second support platform 21 is provided with an installation groove 211, a through hole 212 and a rotating shaft. The through hole 212 is communicated with the installation groove 211, and the rotating shaft is fixedly connected in the through hole 212. The installation groove 211 extends downward along a direction perpendicular to the upper surface of the second support platform 21. The through hole 212 is arranged in the direction of the second support platform 21 close to its bottom, and the through hole 212 extends along a direction parallel to the upper surface of the second support platform 21 so as to penetrate the length direction of the second support platform 21.

[0046] Among them, the installation groove 211 extends horizontally in the direction towards the third support platform 22 to communicate with the following installation hole 223. The shape of the installation groove 211 is set as a rectangle, and the through hole 212 is set as a circle.

[0047] The upper surface of the third support platform 22 is provided with a first sliding groove 221, a second sliding groove 222 and an installation hole 223. The first sliding groove 221, the second sliding groove 222 and the installation hole 223 are arranged at intervals. The installation hole 223 is located between the first sliding groove 221 and the second sliding groove 222. Among them, both the first sliding groove 221 and the second sliding groove 222 are T-shaped grooves, the installation hole 223 is square, and the installation hole 223 is communicated with the installation groove 211 on the second support platform 21.

[0048] The pressing component 30 includes a pressing plate 31, a first slider 32 and a second slider 33. The first slider 32 and the second slider 33 are arranged at intervals on one side of the pressing plate 31. The first slider 32 is used for sliding connection with the above-mentioned first sliding groove 221, and the second slider 33 is used for sliding connection with the second sliding groove 222, so as to realize that the pressing plate 31 is slidably connected to the upper surface of the third support platform 22 through the first slider 32 and the second slider 33.

[0049] Among them, the pressing plate 31 is set as a rectangle, the size of the pressing plate 31 is the same as the upper surface of the third support platform 22, and the pressing plate 31 is provided with an insertion hole 311. The insertion hole 311 is communicated with the above-mentioned installation hole 223 and the installation groove 211. The first slider 32 and the second slider 33 are fixedly connected to one side of the pressing plate 31. For example, the first slider 32 and the second slider 33 are integrally formed with the pressing plate 31. The first slider 32 and the second slider 33 are set as T-shaped to prevent the first slider 32 and the second slider 33 from disengaging from the first sliding groove 221 and the second sliding groove 222 in the longitudinal direction. Among them, the longitudinal direction is the direction perpendicular to the upper surface of the third support platform 22.

[0050] Among them, the installation hole 311 is set to be circular, and the size of the installation hole 311 is larger than the diameter of the following push rod 34, which is convenient for manual operation of the push rod 34 to move in the direction of the first base 10. The push rod 34 located in the installation hole 311 abuts against its hole wall, driving the pressing plate 31 to push the upper pen barrel 51 to move in the direction of the first base 10. When the side surface of the pressing plate 31 abuts against the abutting surface 415 of the positioning assembly 40, the upper pen barrel 51 just cooperates with the lower pen barrel 52 to realize the assembly of the injection pen. Then, manually operate the push rod 34 to move in the direction away from the first base 10, so that the push rod 34 abuts against the hole wall of the installation hole 311, driving the pressing plate 31 to move in the direction away from the first base 10, so that the pressing plate 31 returns to the initial position, where the initial position is the position where the pressing plate 31 completely covers the upper surface of the third support platform 22.

[0051] As Figure 5 shown, the pressing assembly 30 further includes a push rod 34. The push rod 34 includes a handle 341 and a movable rod 342. One end of the movable rod 342 is connected to the handle 341, and a fixing hole is provided at the other end of the movable rod 342 for sleeving on the above-mentioned rotating shaft to realize the rotational connection of the push rod 34 relative to the rotating shaft. Specifically, the end of the push rod 34 away from the handle 341 sequentially passes through the installation hole 311, the installation hole 223, and the installation groove 211 and is rotationally connected to the rotating shaft through its fixing hole.

[0052] Please refer to Figure 6 and Figure 7 , the positioning assembly 40 includes a positioning plate 41. One end of the positioning plate 41 is located on the upper surface of the first support platform 12, and the other end is located on the upper surface of the second support platform 21. And the side surface of the end of the positioning plate 41 facing the first base 10 abuts and is connected to the side surface of the baffle 11, and the side surface of the end of the positioning plate 41 facing the first base 10 abuts and is connected to the side surface of the third support platform 22, which is convenient for better fixing the positioning assembly 40 between the first base 10 and the second base 20.

[0053] The positioning plate 41 is set to be rectangular, and a positioning groove 411 is provided on the positioning plate 41. The positioning groove 411 extends along the length direction of the positioning plate 41 and is formed by opening. The positioning groove 411 can be set to one or more. When multiple positioning grooves 411 are provided, for example, 2, 3, or 5, the cross-section of the positioning groove 411 is semicircular, and the dimensions of the axial direction and the radial direction of the positioning groove 411 are the same as those of the upper pen barrel 51 and the lower pen barrel 52 of the injection pen. Among them, the axial direction is the direction parallel to the plane of the positioning plate 41, and the radial direction is the direction perpendicular to the plane of the positioning plate 41. The positioning groove 411 is used to realize the positioning of the upper pen barrel and the lower pen barrel of the injection pen.

[0054] The positioning plate 41 further includes a receiving platform 412, and the positioning groove 411 is located between two adjacent receiving platforms 412. One end of the groove wall 413 of the positioning groove 411 facing the second base 20 is provided with a notch, and this notch forms the receiving platform 412. The upper surface of the receiving platform 412 is flush with the upper surface of the third support platform 22, facilitating the reciprocating movement of the pressing plate 31 on the upper surfaces of the receiving platform 412 and the third support platform 22.

[0055] Each groove wall 413 at one end of the positioning groove 411 close to the first base 10 is provided with a limiting member 414. The limiting member 414 is connected to the side surface of the groove wall 413. For example, the limiting member 414 and the groove wall 413 can be integrally formed. The limiting member 414 has a certain arc, and the distance R2 from the limiting member 414 to its axis is less than the radius R1 of the positioning groove, which can position the radial direction of the injection pen. Here, the radial direction refers to the direction perpendicular to the surface of the positioning plate 41, which can prevent the injection pen from having radial displacement during the assembly process and improve the assembly accuracy of the injection pen.

[0056] Wherein, one surface of the groove wall 413 close to the receiving platform 412 forms an abutting surface 415 in contact with the side surface of the pressing plate 31, and the abutting surface 415 is perpendicular to the upper surface of the receiving platform 412.

[0057] The positioning assembly 40 further includes a positioning block 42. The positioning block 42 is arranged at the bottom of the positioning groove 411 and at one end close to the first base 10. The positioning block 42 is used to cooperate with the long hole on the lower barrel 52 of the injection pen to position the lower barrel 52 of the injection pen in the axial direction of the positioning groove 411. Here, the axial direction is along the length direction of the positioning plate 41, which can prevent the lower barrel 52 of the injection pen from having axial displacement during the assembly process and improve the assembly accuracy of the injection pen.

[0058] Since the diameter of the lower cap 53 of the injection pen is larger than the diameter of the lower barrel, in order to make the upper barrel, the lower barrel, and the lower cap be in the same plane. The positioning assembly 40 further includes a mounting plate 43. The mounting plate 43 extends from the positioning plate 41 towards the first base 10. Among them, the height h1 of the mounting plate 43 is less than the height h2 from the bottom of the positioning groove 411 to the bottom of the positioning plate 41, facilitating the accommodation of the lower cap 53 of the injection pen.

[0059] In order to prevent the assembly device from moving due to the fact that when operating the device to assemble the injection pen, the operator needs to push the push rod 34 forcefully, resulting in the assembly device not being fixed on the operating table and affecting the efficiency of the operator assembling the injection pen by operating the assembly device, the bottoms of the first base 10 and the second base 20 are provided with fixing members fixed to the operating table. The fixing members can be magic tapes, screws, double-sided tapes, etc.

[0060] The assembly process of the injection pen is as follows: Among them, please refer to Figure 1 andFigure 8 The injection pen 50 includes an upper pen barrel 51, a lower pen barrel 52, and a lower pen cap 53. Before assembling the injection pen, first manually snap-connect the lower pen cap 53 to one end of the lower pen barrel 52, then place the injection needle with the injection agent into the lower pen barrel 52, and then place the upper pen barrel 51 and the lower pen barrel 52 at intervals in the positioning groove 411. The mating ports of the upper pen barrel 51 and the lower pen barrel 52 are arranged opposite to each other. Manually place the upper pen barrel 51 of the injection pen 50 into the positioning groove 411 and close to one end of the second base 20. Then, place the lower pen barrel 52 into the positioning groove 411 and close to one end of the first base 10. The long-shaped opening of the lower pen barrel 52 cooperates with the positioning block 42. The lower pen cap 53 of the lower pen barrel 52 is placed on the mounting plate 43, and the lower pen cap 53 abuts against the side surface of the baffle 11. One end of the upper pen barrel 51 away from the lower pen barrel 52 abuts against the side surface of the pressing plate 31. Manually hold the handle 341 and push the push rod 34 in the first direction. Here, the first direction is the direction towards the first base 10. The push rod 34 abuts against the pressing plate 31, so that the pressing plate 31 pushes the upper pen barrel 51 to move in the first direction, so that the upper pen barrel 51 cooperates with the lower pen barrel 52, thereby realizing the assembly of the injection pen. Finally, manually operate the push rod 34 to move in the direction away from the first base 10, so that the push rod 34 abuts against the inner wall of the insertion hole 311, driving the pressing plate 31 to move in the direction away from the first base 10, so that the pressing plate 31 returns to the initial position. Place the assembled injection pen into the storage box and proceed with the assembly of the next injection pen. Using this assembly device to assemble the injection pen not only improves the yield rate and assembly efficiency, but also facilitates the operation and maintenance of technicians. Since the assembly device for the prefilled syringe automatic injection pen occupies a small area and is flexible in layout, the assembly cost is also reduced.

[0061] Embodiment 2

[0062] Please continue to refer to Figure 1 and Figure 9 which is different from Embodiment 1 in that the first base 10 is different and the positioning groove 411 is not provided with a limiting member. In the first base 10 of this embodiment, a fixing groove 101 is provided on the baffle 11. The fixing grooves 101 are evenly arranged on the side of the baffle 11 facing the second base 20. The fixing groove 101 is used to install the lower pen cap 53 of the lower pen barrel 52, and the size of the fixing groove 101 is adapted to the lower pen cap 53. By installing the lower pen cap 53 of the lower pen barrel 52 in the fixing groove 101, the axial and radial positioning of the lower pen barrel 52 can be realized, preventing the injection pen from having axial and radial displacements during the assembly process and improving the assembly accuracy of the injection pen.

[0063] Embodiment 3

[0064] Please continue to refer to Figure 1 and Figure 10The difference between this embodiment and embodiment 1 is that the position and installation method of the push rod 34 are different. One end of the push rod 34 of this embodiment is installed on the side of the pressing plate 31, and the other end of the push rod 34 is installed with a handle 341. The pressing plate 31 is pushed toward the first base 10 by holding the handle 341, so that the side of the pressing plate 31 contacts the end of the upper pen barrel 51, thereby realizing that the side of the pressing plate 31 pushes the end of the upper pen barrel 51 to move toward the lower pen barrel 52, realizing the cooperation between the upper pen barrel 51 and the lower pen barrel 52, and completing the assembly of the injection pen.

[0065] When the pressing plate 31 is pushed to move toward the first base 10 , when the side of the pressing plate 30 facing away from the push rod 34 abuts against the abutting surface 415 , the upper pen barrel 51 and the lower pen barrel 52 fit together to complete the assembly of the injection pen.

[0066] Example 4

[0067] The difference between this embodiment and embodiment 1 is that the power mechanism for driving the pressing plate 31 to move is different. This embodiment does not need to use the push rod 34. This embodiment is provided with a driving member in the first slide groove 221 or the second slide groove 222. The driving member includes a driver, a controller, a sensor and a switch. The driver, the sensor and the switch are all electrically connected to the controller. The driver is a micro servo electric cylinder. The micro servo electric cylinder and the controller are fixed in the first slide groove 221. The sensor is arranged on the abutment surface 415. One end of the telescopic rod of the micro servo electric cylinder is fixedly connected to the first slider 32 of the pressing plate 31. The switch is arranged on the outside of the second base 20. The switch is used to control the micro servo electric cylinder to work and shut down. When the switch is turned on, the switch sends a first signal. The controller receives the first signal and controls the micro servo electric cylinder to drive the telescopic rod toward The first base 10 moves in the direction of the telescopic rod, which pushes the first slider 32 of the pressing plate 31 to move toward the first base 10, and the side of the pressing plate 31 abuts against the end of the upper pen barrel 51, so that the side of the pressing plate 31 pushes the end of the upper pen barrel 51 to move toward the lower pen barrel 52. When the side of the pressing plate 31 abuts against the abutting surface, the upper pen barrel 51 and the lower pen barrel 52 cooperate to complete the assembly of the injection pen; when the side of the pressing plate 31 abuts against the abutting surface 415, the sensor sends a second signal, the controller receives the second signal and controls the micro-servo electric cylinder to drive the telescopic rod to move in the direction away from the first base 10, and the telescopic rod drives the pressing plate 31 to move away from the first base 10 until the pressing plate 31 returns to the initial position, and the switch is turned off, and the above operation is repeated to assemble the next injection pen.

[0068] Comparative Example 1

[0069] Please refer to the accompanying drawing of comparative example 1 Figure 11 For specific solutions, please refer to the utility model patent with application number CN202223439589.4.

[0070] Example 5

[0071] Compared with Comparative Example 1, the efficiency of assembling the injection pen using the devices of Embodiments 1-4 of the present invention is at least doubled.

[0072] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent substitution methods and are all included in the protection scope of the present invention.

Claims

1. An assembly device for a prefilled syringe automatic injection pen, characterized in that: The assembly device comprises: A first base, comprising a first support platform and a baffle plate connected to each other, wherein an upper surface of the first support platform and a side surface of the baffle plate are arranged perpendicular to each other; The second base is arranged opposite to the first base, the second base includes a second support platform and a third support platform connected to each other, the upper surface of the second support platform and the side surface of the third support platform are arranged perpendicular to each other, the second support platform is provided with a mounting groove, a through hole and a rotating shaft, the mounting groove is arranged in a direction perpendicular to the plane of the second support platform, the through hole is arranged in a direction parallel to the plane of the second support platform, the through hole and the mounting groove are communicated with each other, the rotating shaft is fixedly connected in the through hole, the upper surface of the third support platform is provided with a first slide groove, a second slide groove and a mounting hole arranged at intervals, the mounting hole is located between the first slide groove and the second slide groove, and the mounting hole and the mounting groove are communicated with each other; A positioning assembly, arranged between the first base and the second base, the positioning assembly comprises a positioning plate, a positioning block, and a mounting plate, the two ends of the positioning plate are respectively located on the first supporting platform and the second supporting platform, the positioning plate is provided with a positioning groove for fixing the upper pen barrel and the lower pen barrel of the injection pen, the positioning block is located at the bottom of the positioning groove and is arranged close to the first base, the positioning block is used to cooperate with the long position hole on the surface of the lower pen barrel of the injection pen to achieve axial positioning of the lower pen barrel, the mounting plate is formed by the positioning plate extending toward the first base, the height of the mounting plate is less than the height from the bottom of the positioning groove to the bottom of the positioning plate, the mounting plate is used to hold the lower pen cover of the lower pen barrel of the injection pen, the groove wall of the positioning groove is further provided with a limiting member, the limiting member is arranged in an arc shape, and the distance between the limiting member and the arc center is less than the radius of the positioning groove, so as to achieve radial positioning of the upper pen barrel and the lower pen barrel of the injection pen; and A pressing assembly is arranged on the second base, the pressing assembly comprises a pressing plate and a push rod, the pressing plate is slidably connected to the upper surface of the third support platform, the pressing plate is provided with an insertion hole, one end of the push rod passes through the insertion hole of the pressing plate, the mounting hole, the mounting groove and the rotating shaft in sequence to be movably connected to the second base; When the upper pen barrel and the lower pen barrel of the injection pen are placed in the positioning groove of the positioning assembly, the push rod is held by hand and moved toward the direction of the first base, and the push rod drives the pressing plate to move toward the direction of the first base, so that the side surface of the pressing plate contacts the upper pen barrel of the injection pen and moves toward the direction of the first base, thereby realizing the cooperation between the upper pen barrel and the lower pen barrel to complete the assembly of the injection pen.

2. The assembly device for the prefilled syringe automatic injection pen according to claim 1, characterized in that: The push rod comprises a handle and a movable rod, one end of the movable rod is connected to the handle, and the other end of the movable rod is connected to a fixing hole. After the movable rod passes through the insertion hole, it is sleeved on the rotating shaft through the fixing hole, so that the push rod rotates relative to the rotating shaft; The insertion hole is arranged in a circular shape, and the diameter of the insertion hole is larger than the diameter of the movable rod.

3. The assembly device for the prefilled syringe automatic injection pen according to claim 1, characterized in that: The pressing assembly also includes a first slider and a second slider, the first slider and the second slider are connected to the pressing plate at intervals, and the pressing plate is slidably connected to the first slide groove and the second slide groove respectively through the first slider and the second slider, so that the pressing plate can reciprocate on the upper surface of the third support platform.

4. The assembly device for a prefilled syringe automatic injection pen according to any one of claims 1 to 3, characterized in that: The positioning groove is arranged along the length direction of the positioning plate, the cross section of the positioning groove is semicircular, and the positioning groove cooperates with the upper pen barrel and the lower pen barrel of the injection pen to achieve radial positioning of the upper pen barrel and the lower pen barrel of the injection pen.

5. The assembly device for a prefilled syringe automatic injection pen according to any one of claims 1 to 3, characterized in that: The number of the positioning grooves is one or more.

6. The assembly device for a prefilled syringe automatic injection pen according to any one of claims 1 to 3, characterized in that: The positioning plate also includes a receiving platform, which is located at one end of the positioning groove facing the second base. The receiving platform is provided on both sides of each positioning groove. The upper surface of the receiving platform is flush with the upper surface of the third support platform, so as to facilitate the reciprocating movement of the pressing plate on the upper surface of the third support platform and the upper surface of the receiving platform.

Images