Bottle rack cover press-fitting device

Abstract

The invention relates to the technical field of injection pens, in particular to a bottle holder cap press-fitting device which comprises a workbench, the workbench comprises a fixing seat and a supporting seat, the supporting seat is mounted on the fixing seat, a containing space is formed between the fixing seat and the supporting seat, and a mounting hole is formed in the supporting seat; the lifting device is located in the containing space, and at least part of the lifting device is located above the fixing base; the bottle rack cover assembly comprises a bottle rack cover and a supporting part, the supporting part is installed in the lifting device, the bottle rack cover is located above the supporting part, and a screw rod is rotationally connected into the supporting part; the driving device enables the lifting device to move in the axial direction of the bottle rack cover assembly, and the connecting position of the bottle rack cover and the supporting part can be exposed and shielded; the positioning part is rotationally connected to the bottom of the lifting device, the top of the positioning part is located in the bottle rack cover assembly and abuts against the screw rod, and the position of the screw rod is adjusted by adjusting the mutual abutting position; the limiting assembly is fixedly arranged on the supporting base and used for fixing the bottle rack cover assembly.

Description

Technical Field

[0001] The invention relates to the technical field of injection pens, and in particular to a bottle rack cover pressing device. Background Art

[0002] In the treatment of diabetes, the insulin pen is a convenient and accurate injection device. The insulin pen is usually composed of a refill holder, a pen body and a dosage button. The refill is filled with insulin solution, and the dosage is adjusted through the pen body to complete the injection. However, during the use and storage of the insulin pen, there are corresponding problems with the pressing of the bottle holder cover and the adjustment of the initial solution. In the early stage of insulin pen research and development, it is not convenient to establish an automated assembly production line, mainly due to the frequent design changes of the initial products. The product's external dimensions may change due to functional optimization or appearance improvement. If an automated assembly production line has been established, this size change may make the originally designed automated fixtures, positioning devices, etc. unable to be used normally; the functional modules of the product are also prone to increase or decrease. Therefore, in the early stage of research and development, the bottle cover of the insulin pen was mostly pressed by manual operation, which is not only inefficient, but also easy to cause the bottle cover to loosen or be damaged due to improper operation, thus affecting the sealing of the insulin pen and the stability of the drug solution. In the process of pressing the bottle cover, it is necessary to ensure the smoothness and accuracy of the bottle cover installation, and the existing technology for pressing the bottle cover does not provide a visual window to observe and judge the pressing of the bottle cover. The screw mechanism in the insulin pen is responsible for adjusting the dosage of the drug solution. According to the needs of different insulin pens, the distance between the bottom of the screw and the cartridge plug is adjusted to meet different requirements, and when installing the bottle cover, it is impossible to effectively judge the installation of the bottle cover.

[0003] Therefore, the present application has developed a bottle rack cover press-fitting device to solve the problems existing in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide a bottle holder cover pressing device to solve the problems of the distance between the end of the screw and the cartridge bottle plug and the lack of visualization of the bottle holder cover installation during the assembly process of the insulin pen in the prior art.

[0005] The technical solution of the present invention is: a bottle rack cover pressing device, comprising: A workbench, the workbench comprising a fixing seat and a supporting seat, the supporting seat being mounted on the fixing seat, and a receiving space being formed between the fixing seat and the supporting seat, and a mounting hole being provided on the supporting seat; A lifting device, located in the accommodating space and at least partially located above the fixing seat; A bottle rack cover assembly, comprising a bottle rack cover and a support portion, wherein the support portion is installed in the lifting device, the bottle rack cover is located above the support portion, and a screw rod is rotatably connected in the support portion; A driving device, wherein a driving end of the driving device is located in the accommodating space and connected to the lifting device, so that the lifting device moves along the axial direction of the bottle rack cover assembly to reveal and conceal the connection position between the bottle rack cover and the supporting portion; A positioning part, which is rotatably connected to the bottom of the lifting device, and the top of which is located in the bottle rack cover assembly, and abuts against the screw rod, and the position of the screw rod is adjusted by adjusting the abutting position; The limiting assembly is fixed on the supporting seat and is used to fix the bottle rack cover assembly.

[0006] Preferably, the lifting device includes a fixing part, a lifting part and a spring, the fixing part is located in the accommodating space and is fixed on the support seat, a connecting hole is opened in the fixing part and is communicated with the mounting hole, one end of the spring is located in the connecting hole, and the other end passes through the mounting hole and is located above the support seat, and the spring outer shell is provided with a lifting part, and the lifting part drives the spring to move together.

[0007] Preferably, an abutment portion is provided on the outer wall surface of the fixed part, the driving device is connected to a rotating part, the middle part of the rotating part is rotatably connected to the fixed part, the rotating part extends in two directions along the middle part, and the two ends of the extension are respectively hinged to the driving end and abut against the abutment portion, and the axial movement of the driving end causes the rotating part to rotate around the middle position so that the fixed part completes the lifting and lowering movement.

[0008] Preferably, the positioning part includes a positioning column, which is coaxially arranged with the screw, and a gasket is provided at one end of the screw close to the positioning column. The screw moves downward so that the gasket abuts against the positioning column, thereby completing the adjustment of the distance between the top of the screw and the top of the fixing part.

[0009] Preferably, the outer wall surface of the screw is bearing-connected to the inner wall surface of the gasket, and the bottom of the screw abuts against the gasket. When the screw rotates relative to the gasket, the gasket abuts against the gasket and slides in the support portion.

[0010] Preferably, the limiting assembly includes a straightening block and a limiting block, the straightening block is fixed on the fixing seat, the side wall of the straightening block is provided with a slide groove, the limiting block is slidably set in the slide groove, and a straightening hole is provided above the straightening block, the straightening hole is concentric with the bottle holder cover, and is used for installing the upper pen shell assembly.

[0011] Preferably, an avoidance hole is formed at one end of the limit block close to the bottle rack cover, and when the limit block is close to the bottle rack cover, the screw rod is located in the avoidance hole, and the limit block presses the bottle rack cover tightly.

[0012] Preferably, a pair of grooves are provided on the top of the lifting portion, and the grooves match the bottom of the upper pen housing assembly.

[0013] Compared with the prior art, the advantages of the present invention are: (1) A gasket is provided at the bottom of the screw. By controlling the rotational movement of the screw, when the gasket abuts against the positioning column, the bottom of the screw is limited. When the positioning column is located at different heights in the support portion, the distance between the bottom of the screw and the cartridge plug can be adjusted to achieve the purpose of adjusting the dosage of the liquid medicine. The gasket has a large area and remains in a horizontal state. After directly contacting the positioning column, the extension length of the screw can be accurately determined without misalignment or failure to limit horizontally due to the small contact area between the screw and the positioning column.

[0014] (2) The driving device is extended and retracted to make the rotating part rotate around its own middle part, and the lifting part is pressed downward to make the lifting part away from the bottle rack cover, so that the connection position between the bottle rack cover and the supporting part is exposed, which makes it easy to observe the installation position of the bottle rack cover and determine whether the installation position is correct, so as to facilitate the subsequent press-fitting of the pen shell assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a structural schematic diagram of a bottle rack cover press-fitting device according to the present invention; Figure 2 It is an exploded schematic diagram of the bottle rack cover assembly of the present invention; Figure 3 It is a schematic diagram of the connection between the rotating part, the driving end and the fixed part of the present invention; Figure 4 It is a side view of a bottle rack cover press-fitting device according to the present invention; Figure 5 It is a schematic diagram of the abutment between the screw rod and the positioning column of the present invention; Figure 6 It is a cross-sectional view of the fixing part, the screw rod and the positioning column of the present invention.

[0016] Among them: 1. workbench; 11. fixed seat; 12. support seat; 13. accommodating space; 14. mounting hole; 2. lifting device; 21. fixing part; 22. lifting part; 23. spring; 24. connecting hole; 25. abutting part; 26. rotating part; 27. groove; 3. Bottle rack cover assembly; 31. Bottle rack cover; 32. Support part; 33. Screw; 34. Gasket; 4. driving device; 41. driving end; 5. Positioning part; 51. Positioning column; 6. Limiting assembly; 61. Righting block; 62. Limiting block; 63. Slide; 64. Righting hole; 65. Avoidance hole. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with specific embodiments: like Figure 1 and Figure 2 As shown, a bottle rack cover pressing device includes a workbench 1, a lifting device 2, a bottle rack cover assembly 3, a driving device 4, a positioning portion 5 and a limiting assembly 6; wherein the workbench 1 includes a fixed seat 11 and a supporting seat 12, and a receiving space 13 is formed between the fixed seat 11 and the supporting seat 12, and the receiving space 13 is used to accommodate the lifting device 2, and at least part of the lifting device 2 is located above the supporting seat 12 through a mounting hole 14, and the bottle rack cover assembly 3 includes a bottle rack cover 31 and a supporting portion 32, wherein the supporting portion 32 is located in the lifting device 2, and the bottle rack cover 31 is installed on the supporting portion 32, and the bottle rack cover 31 is supported and the height of the bottle rack cover 31 is limited by the supporting portion 32.

[0018] When the bottle holder cover 31 is press-fitted, its installation position needs to be determined so that the bottle holder cover 31 can be smoothly press-fitted into the upper pen shell assembly subsequently. Before press-fitting, the upper pen shell assembly has completed the power storage for generating thrust to push the cartridge bottle plug for insulin injection. Therefore, the upper pen shell assembly not only needs to match the bottle holder cover assembly 3, but also needs to prevent the pen shell assembly from rotating during the press-fitting process. Therefore, a pair of grooves 27 are provided on the top of the lifting part 22, so that the grooves 27 match the bottom of the upper pen shell assembly, so that the two can be accurately aligned and stably connected, so that the positional relationship between the lifting part 22 and the upper pen shell assembly is fixed, preventing the upper pen shell assembly from rotating, and avoiding misalignment or shaking during use.

[0019] In order to prevent the upper pen shell assembly from rotating, the lifting part 22 needs to match the height of the upper pen shell assembly, so that the connection position between the support part 32 and the bottle rack cover 31 is blocked by the lifting part 22, and no visual window can be provided, and the installation position of the bottle rack cover 31 cannot be observed. Therefore, a spring 23 is set between the support part 32 and the lifting part 22, and the outer surface of the spring 23 is tightly connected to the inner wall surface of the lifting part 22. When the lifting part 22 moves downward, the spring 23 is compressed. When the lifting part 22 is not subjected to downward force, the spring 23 drives the lifting part 22 back to the initial position. During installation and press-fitting, the driving end 41 of the driving device 4 is retracted upward, so that the lifting part 22 moves downward to press the spring 23, exposing the installation positions of the bottle holder cover 31 and the supporting part 32, providing an intuitive observation window, so that the installation position and angle of the bottle holder cover 31 can be accurately determined, and the installation position can be directly contacted without disassembling or moving other parts. After the installation of the bottle holder cover 31 is completed, the driving end 41 extends downward, and the lifting part 22 moves upward to a suitable position under the elastic force of the spring 23, so as to facilitate the subsequent press-fitting of the pen shell assembly.

[0020] Furthermore, if Figure 2-Figure 3 As shown, the lifting device 2 also includes a fixing portion 21, which is fixed on the support seat 12 and located in the accommodating space 13. A connecting hole 24 is opened in the fixing portion 21. In this embodiment, the connecting hole 24 forms a concave cavity penetrated by the side wall of the fixing portion 21. The upper end of the connecting hole 24 is communicated with the mounting hole 14, so that the lifting portion 22 is located in the connecting hole 24 and extends upward to the outside of the mounting hole 14, so that the lifting portion 22 can be accurately inserted into the mounting hole 14 and fixed at a predetermined position of the connecting hole 24. A spring 23 is provided in the lifting portion 22, one end of the spring 23 is arranged on the inner bottom surface of the fixing portion 21, and the other end is connected to the lifting portion 22. There is a certain distance between the bottom of the lifting portion 22 and the inner bottom surface of the fixing portion 21, providing a moving space for the spring 23 and the lifting portion 22. When the lifting portion 22 is compressed and pressed down by the driving device 4, the lifting portion 22 applies a downward pressure to the spring 23 to deform the spring 23, thereby providing a visual window for the bottle rack cover 31, which is convenient for observing the installation position of the bottle rack cover 31.

[0021] like Figure 3As shown, in order to better realize the lifting movement of the lifting part 22, the outer wall surface of the fixed part 21 is symmetrically provided with an abutment part 25, and the abutment part 25 corresponds to the driving end 41, and the driving end 41 is connected to the abutment part 25 through the rotating part 26, wherein the middle part of the rotating part 26 is rotatably connected to the fixed part 21, and extends from the middle part of the rotating part 26 to two different directions, respectively connected to the driving end 41 and the abutment part 25, through the setting of two different directions, it is possible to transmit power or movement from a fixed position to multiple directions, and more effectively utilize the limited space, not only can the load be evenly distributed, but also the bearing capacity of the system can be increased, the loads in different directions can be effectively dispersed, and the local stress concentration can be reduced. When the driving end 41 moves axially, the rotating part 26 rotates around the middle position, and the other end of the rotating part 26 abuts on the abutment part 25 of the fixed part 21, and the driving end 41 performs telescopic movement, and cooperates with the rebound and compression of the spring 23, thereby driving the fixed part 21 to perform lifting movement.

[0022] Embodiment 1: The positioning portion 5 is rotatably connected to the bottom of the fixing portion 21, the lifting portion 22 and the bottle rack cover 31 are both internal hollow structures, and the positioning column 51 is located in the bottle rack cover 31, the positioning column 51 is coaxially arranged with the screw 33, wherein the bottom end of the screw 33 is also provided with a gasket 34, when adjusting the elongation length of the screw 33, when the rotating screw 33 moves downward and gradually approaches the positioning column 51, the gasket 34 rotates together with the screw 33, when the gasket 34 contacts the positioning column 51, the screw 33 cannot continue to move, thereby realizing the adjustment of the elongation length of the screw 33, by rotating the positioning column 51, the positioning column 51 is located at different corresponding heights of the bottle rack cover 31, thereby completing the adjustment of the elongation length of the screw 33 and the adjustment of the dosage of the liquid medicine.

[0023] When the screw 33 is rotated to move the screw 33 downward and the gasket 34 contacts the positioning column 51, the screw 33 continues to rotate, causing the gasket 34 and the positioning column 51 to rotate relative to each other, causing wear to the positioning column 51. As a result, when the positioning column 51 adjusts the extension length of the screw 33, the preset extension length of the screw 33 is different from the actual one, affecting the actual dosage of the liquid medicine after the upper pen shell is pressed and installed. Therefore, it is necessary to avoid the relative rotation of the gasket 34 and the positioning column 51.

[0024] Embodiment 2: The screw rod 33 and the gasket 34 are connected by a bearing, and the top of the screw rod 33 abuts against the gasket 34. During the downward rotation of the screw rod 33, the screw rod 33 rotates relative to the gasket 34 and pushes the gasket 34 downward to make the gasket 34 realize axial movement in the fixing portion 21, thereby converting the rotational movement into axial translational movement. When the gasket 34 contacts the positioning column 51, since the gasket 34 does not rotate with the screw rod 33, no friction is generated with the positioning column 51 and no wear is caused to the positioning column 51. The screw rod 33 continues to rotate, but the gasket 34 abuts against the positioning column 51 and cannot continue to move. Therefore, the effective length of the positioning column 51 can be guaranteed, and the elongation length of the screw rod 33 can be more accurately guaranteed, thereby realizing the adjustment and determination of the elongation length of the screw rod 33.

[0025] like Figure 4-Figure 5 As shown, in order to prevent the bottle rack cover 31 from rotating with the screw rod 33 during the rotation of the screw rod 33, a straightening block 61 and a limit block 62 are provided on the support portion 32, and the side wall of the straightening block 61 is provided with a slide groove 63, and the limit block 62 is slidably set in the slide groove 63. After the bottle rack cover 31 and the screw rod 33 are installed, the limit block 62 is pushed to move to the top of the bottle rack cover 31 to press the bottle rack cover 31. A limit wheel is also provided in the bottle rack cover 31, and the limit wheel is set on the inner wall of the bottle rack cover 31. The screw rod 33 is rotationally connected to the limit wheel and moves downward through the limit wheel. When the gasket 34 contacts the positioning column 51, the screw rod 33 cannot continue to move, and the limit block 62 is pulled out away from the bottle rack cover 31, and the upper pen shell assembly is connected to the bottle rack cover 31 through the straightening hole 64.

[0026] Furthermore, an avoidance hole 65 is opened at one end of the limit block 62 close to the bottle rack cover 31. When the limit block 62 is close to the bottle rack cover 31, the screw 33 is located in the avoidance hole 65. The avoidance hole 65 provides necessary space for the screw 33 so that the screw 33 will not be hindered by the limit block 62 when rotating or moving, so that the screw 33 can rotate smoothly to adjust the extension length.

[0027] The implementation principle of this embodiment: When the bottle rack cover 31 is pressed, first the driving end 41 of the driving device 4 contracts to make the rotating part 26 rotate around its own middle part, thereby generating a downward force on the abutting part 25, so that the lifting part 22 moves downward and compresses the spring 23, exposing the top of the support part 32, and then the assembly structure of the bottle rack cover 31 and the screw 33 is installed on the support part 32, and the installation position is observed and determined. After the installation is completed, the limit block 62 is pushed to press the bottle rack cover 31 onto the support part 32, and the positioning part 5 is rotated to move the top of the positioning column 51 to a suitable position to meet the requirements of different insulin pens, and then the screw 33 is rotated to move the screw 33 downward. When the gasket 34 at the bottom of the screw 33 abuts against the top of the positioning column 51, the adjustment of the distance between the bottom of the screw 33 and the cartridge plug is achieved.

[0028] Since the insulin pen includes an upper pen shell assembly in addition to the bottle holder cover assembly 3, the upper pen shell assembly has a precise metering and adjustment module, which mainly plays the role of accurately controlling the insulin injection dose. In the present application, after the screw 33 is rotated to the specified position, the limit block 62 is slid along the slide groove 63 and gradually moves away from the bottle holder cover 31. At this time, the limit block 62 will not block the installation of the upper pen shell assembly. The upper pen shell assembly passes through the straightening hole 64 to complete docking with the fixing part 21. At the same time, the upper pen shell assembly is sleeved outside the bottle holder cover 31, and the bottom of the upper pen shell assembly matches the groove 27 on the fixing part 21 to prevent the upper pen shell assembly from rotating. The driving device 4 drives the driving end 41 to extend to realize the reverse rotation of the rotating part 26, and the lifting part 22 returns to the initial position under the action of the spring 23, and completes the matching with the upper pen shell assembly. Under the elastic force of the spring 23, the bottle holder cover 31 is pressed into the upper pen shell assembly.

[0029] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A bottle rack cover pressing device, characterized in that: include: A workbench (1), the workbench (1) comprising a fixing seat (11) and a supporting seat (12), the supporting seat (12) being mounted on the fixing seat (11), and a receiving space (13) being formed between the fixing seat (11) and the supporting seat (12), and a mounting hole (14) being provided on the supporting seat (12); A lifting device (2) located in the accommodating space (13) and at least partially located above the fixing seat (11); A bottle rack cover assembly (3), comprising a bottle rack cover (31) and a support portion (32), wherein the support portion (32) is installed in the lifting device (2), the bottle rack cover (31) is located above the support portion (32), and a screw rod (33) is rotatably connected in the support portion (32); a driving device (4), wherein a driving end (41) of the driving device (4) is located in the accommodating space (13) and is connected to the lifting device (2), so that the lifting device (2) moves along the axial direction of the bottle rack cover assembly (3) to conceal and reveal the connection position between the bottle rack cover (31) and the support portion (32); A positioning portion (5) is rotatably connected to the bottom of the lifting device (2), and the top is located in the bottle rack cover assembly (3), and abuts against the screw rod (33). The position of the screw rod (33) is adjusted by adjusting the abutting position. The limiting assembly (6) is fixedly mounted on the support seat (12) and is used to fix the bottle rack cover assembly (3).

2. A bottle rack cover pressing device according to claim 1, characterized in that: The lifting device (2) comprises a fixing portion (21), a lifting portion (22) and a spring (23); the fixing portion (21) is located in the accommodating space (13) and is fixedly mounted on the support seat (12); a connecting hole (24) is provided in the fixing portion (21) and is connected to the mounting hole (14); one end of the spring (23) is located in the connecting hole (24), and the other end passes through the mounting hole (14) and is located above the support seat (12); the lifting portion (22) is provided on the outer sleeve of the spring (23); and the lifting portion (22) drives the spring (23) to move together.

3. A bottle rack cover pressing device according to claim 2, characterized in that: The positioning portion (5) comprises a positioning column (51), the positioning column (51) being coaxially arranged with the screw rod (33), a gasket (34) being provided at one end of the screw rod (33) close to the positioning column (51), and when the screw rod (33) moves downward and the gasket (34) abuts against the positioning column (51), the adjustment of the extension length of the screw rod (33) is completed.

4. A bottle rack cover pressing device according to claim 3, characterized in that: The outer wall surface of the screw rod (33) is bearing-connected to the inner wall surface of the gasket (34), and the bottom of the screw rod (33) abuts against the gasket (34). When the screw rod (33) rotates relative to the gasket (34), the gasket (34) abuts against the gasket (34) and slides in the support portion (32).

5. The bottle rack cover pressing device according to claim 2, characterized in that: The outer wall surface of the fixed part (21) is provided with an abutment part (25), the driving device (4) is connected to a rotating part (26), the middle part of the rotating part (26) is rotatably connected to the fixed part (21), the rotating part (26) extends in two directions along the middle part, and the two extended ends are respectively hinged to the driving end (41) and abut against the abutment part (25), and the axial movement of the driving end (41) causes the rotating part (26) to rotate around the middle position so that the fixed part (21) completes the lifting movement.

6. The bottle rack cover pressing device according to claim 1, characterized in that: The limiting assembly (6) comprises a straightening block (61) and a limiting block (62); the straightening block (61) is fixedly mounted on the fixing seat (11); a sliding groove (63) is provided on a side wall of the straightening block (61); the limiting block (62) is slidably mounted in the sliding groove (63); a straightening hole (64) is provided above the straightening block (61); the straightening hole (64) is concentric with the bottle holder cover (31) and is used for mounting an upper pen housing assembly.

7. The bottle rack cover pressing device according to claim 6, characterized in that: An avoidance hole (65) is formed at one end of the limit block (62) close to the bottle rack cover (31); when the limit block (62) is close to the bottle rack cover (31), the screw rod (33) is located in the avoidance hole (65), and the limit block (62) presses the bottle rack cover (31) tightly.

8. The bottle rack cover press-fitting device according to claim 2, characterized in that: A pair of grooves (27) are provided on the top of the lifting portion (22), and the grooves (27) match the bottom of the upper pen housing assembly.

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