Injection pen positioning device
By designing an injection pen positioning device including an installation frame, control assembly and positioning assembly, the problem of the injection pen holder in the prior art cannot be placed vertically and stably when the equipment is running at high speed, and a high pass rate of injection pen assembly is achieved.
Patent Information
- Application Number
- CN202421601451.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The existing injection pen positioning device cannot ensure the vertical placement of the pen holder during the high-speed operation of the equipment, resulting in the inability to accurately place the pre-filled needle and refill assembly, thereby reducing the pass rate of injection pen assembly.
A pen positioning device including a mounting frame, a control assembly and a positioning assembly is designed. The positioning component defines the position of the pen holder by installing on the mounting frame; the control component adjusts the clamping and loosening of the pen holder by rotating the cylinder, transmission chuck, screw and other components to ensure that the pen holder does not tilt when the equipment is running at high speed.
The precise placement and vertical stability of the injection pen holder are achieved, ensuring that the refill assembly can be accurately extracted and placed, and improving the pass rate of injection pen assembly.
Smart Images
Figure CN222945389U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of injection pen mechanical assembly, in particular to an injection pen positioning device. Background Art
[0002] The existing injection pens are mostly cylindrical or eccentrically curved in shape because they are convenient for injection and gripping. During the feeding stage, the injection pen needs to be put in and out of the jig, and most of the equipment uses a sleeve with a structure similar to that of the injection pen for positioning, but the sleeve does not have a clamping effect. In addition, the outer wall structure of the injection pen barrel is simple and lacks unique positioning features, resulting in low positioning accuracy. If the barrel of the injection pen is not positioned on the injection pen assembly production line, the refill assembly cannot be accurately extracted and placed in the refill assembly jig, and the refill assembly cannot be accurately placed in the injection pen barrel after the pre-filled needle is placed in the pre-filled needle jig. The flange buckle of the refill assembly cannot be locked with the slot of the injection pen barrel, which ultimately leads to a greatly reduced injection pen assembly qualification rate and may even damage the corresponding equipment and components of the injection pen production line.
[0003] Existing inventions use a jig with a shape similar to the shape of the injection pen barrel for adaptive positioning. Although it can ensure that the injection pen barrel is fixed at a specific plane angle, it is convenient to place the injection pen barrel into the jig, so there is a large gap between the pen barrel and the jig, so it cannot ensure that the pen barrel is placed vertically. During the high-speed operation of the equipment, the pen barrel is prone to tilt, resulting in the pre-filled needle and pen core assembly cannot be accurately placed in the pen barrel. Utility Model Content
[0004] The utility model aims to provide an injection pen positioning device which has a simple structure, can ensure that the pen holder and the fixture are relatively fixed and accurately positioned, and will not tilt during high-speed operation of the equipment, so as to improve the qualified rate of injection pen assembly.
[0005] In order to solve the above technical problems, the utility model provides an injection pen positioning device, including a mounting frame, a control component and a positioning component;
[0006] The positioning assembly is mounted on the mounting frame and is used to define the position of the pen holder;
[0007] The control assembly is mounted on the mounting frame and is used to adjust the clamping and loosening of the pen holder.
[0008] Furthermore, the mounting rack includes a base plate, a vertical bracket and a table top; the vertical brackets are mounted on the edges of both sides of the base plate, and the table top is mounted on the vertical brackets.
[0009] Furthermore, the control component includes a rotary cylinder, a transmission chuck, a screw rod, a guide block, and a guide shaft; the two ends of the guide shaft are respectively mounted on vertical brackets and are located on both sides of the screw rod; one end of the screw rod is connected to the transmission chuck mounted on the rotary cylinder, and the other end passes through the first vertical bracket and is connected to the second vertical bracket; the guide block is mounted on the screw rod and is located on the outside of the first vertical bracket.
[0010] Furthermore, the control component also includes a nut, an L-shaped movable plate, a clamp, a sliding bushing and a bearing; the L-shaped movable plate is connected to the guide shaft through the sliding bushing; the clamp is installed on the L-shaped movable plate through the table; the nut is installed on the side of the L-shaped movable plate; the bearing is installed on the vertical bracket, located on the upper and lower sides of the screw rod.
[0011] Furthermore, the nut includes a left-handed screw nut and a right-handed screw nut, and the L-shaped movable plate includes a left movable L plate and a right movable L plate; the left-handed screw nut is installed on the right side of the right movable L plate, and the right-handed screw nut is installed on the right side of the left movable L plate; the clamping plate includes a left clamping plate and a right clamping plate, the left clamping plate is installed on the left movable L plate through the table top, and the right clamping plate is installed on the right movable L plate through the table top.
[0012] Furthermore, the bearing includes a left bearing and a right bearing; the right bearing is installed in a first vertical bracket, and the left bearing is installed in a second vertical bracket.
[0013] Furthermore, the positioning assembly includes a positioning base, a pin shaft, a compression spring and a window positioning plate; the positioning base is installed on the table top, located laterally between the left clamping plate and the right clamping plate, and longitudinally between the guide shafts; the window positioning plate is respectively connected to the left clamping plate and the right clamping plate through the pin shaft, and is located above the positioning base; the compression spring is installed on the pin shaft.
[0014] Furthermore, it also includes a pre-filled needle jig and a refill assembly jig; the pre-filled needle jig is installed on the table, located on the right side of the right clamp and adjacent to the right clamp; the refill assembly jig is installed on the table, located on the right side of the pre-filled needle jig; the positioning base, the pre-filled needle jig and the refill assembly jig are located at the same horizontal position.
[0015] Compared with the prior art, the utility model has at least the following beneficial effects:
[0016] The injection pen positioning device has a compact structure and is suitable for a smaller space. The positioning component is used to accurately place the injection pen barrel, and the control component is used to vertically place the barrel without tilting, so that the refill assembly can be accurately extracted and placed in the refill assembly fixture, and then the refill assembly can be accurately placed in the injection pen barrel after the pre-filled needle is placed, and the flange buckle of the refill assembly is locked with the slot of the injection pen barrel, thereby improving the injection pen assembly qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of an injection pen positioning device in one embodiment of the utility model;
[0018] Figure 2 It is a schematic diagram of the structure of the injection pen positioning device in one embodiment of the utility model from a left side perspective;
[0019] Figure 3 It is a schematic diagram of the structure of the injection pen positioning device in one embodiment of the utility model from the right side perspective;
[0020] Figure 4 It is a right schematic diagram of an injection pen positioning device in one embodiment of the utility model;
[0021] Figure 5 AA cross-sectional schematic diagram of an injection pen positioning device in one embodiment of the utility model;
[0022] Figure 6 It is a front view schematic diagram of an injection pen positioning device in one embodiment of the utility model;
[0023] Figure 7 BB is a cross-sectional schematic diagram of an injection pen positioning device in an embodiment of the utility model.
[0024] Figure numbers: 1. Base plate; 2. Vertical bracket; 3. Table; 4. Rotating cylinder; 5. Transmission chuck; 6. Screw; 7. Guide block; 8. Guide shaft; 9. Left-handed screw nut; 10. Right-handed screw nut; 11. Left movable L-plate; 12. Right movable L-plate; 13. Left clamping plate; 14. Right clamping plate; 15. Sliding bushing; 16. Left bearing; 17. Right bearing; 18. Positioning base; 19. Pin; 20. Compression spring; 21. Window positioning plate; 22. Pre-filled needle fixture; 23. Pen core assembly fixture; 24. Pen holder. DETAILED DESCRIPTION
[0025] The following is a more detailed description of an injection pen positioning device of the present invention in conjunction with a schematic diagram, wherein a preferred embodiment of the present invention is shown. It should be understood that a person skilled in the art can modify the present invention described herein while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to a person skilled in the art and not as a limitation to the present invention.
[0026] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0027] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.
[0028] like Figures 1 to 7 As shown, the embodiment of the utility model provides an injection pen positioning device, including a mounting frame, a control component and a positioning component;
[0029] The positioning assembly is mounted on the mounting frame and is used to define the position of the pen holder 24;
[0030] The control assembly is mounted on the mounting frame and is used to adjust the clamping and loosening of the pen holder 24 .
[0031] In this embodiment, the mounting frame includes a base plate 1 , a vertical bracket 2 and a table top 3 ; the vertical bracket 2 is mounted on the edges of both sides of the base plate 1 , and the table top 3 is mounted on the vertical bracket 2 .
[0032] In a preferred embodiment, the control component includes a rotating cylinder 4, a transmission chuck 5, a screw 6, a guide block 7, and a guide shaft 8; the two ends of the two guide shafts 8 are respectively mounted on the vertical bracket 2 and are located on both sides of the screw 6; one end of the screw 6 is set to a square structure, which is connected to the transmission chuck 5 installed on the rotating cylinder 4, so as to facilitate the control of the rotation of the screw 6 through the rotating cylinder 4, and the other end passes through the first vertical bracket and is connected to the second vertical bracket; the guide block 7 is installed on the screw 6 and is located on the outside of the first vertical bracket.
[0033] Preferably, the rotation stroke of the rotary cylinder 4 is 180°. When the rotary cylinder 4 rotates one stroke, the screw rod 6 rotates half a circle, and the window positioning plate 21 opens to a size of 6 mm. Two spherical grooves (not marked in the figure) are provided on the guide block 7, which are adapted to the ball head plunger (not marked in the figure). The ball head plungers are distributed on both sides of the screw rod 6 to prevent the screw rod 6 from overloading in terms of rotation angle and to play a positioning role.
[0034] In a preferred embodiment, the control component also includes a nut, an L-shaped movable plate, a clamp, a sliding bushing 15 and a bearing; the L-shaped movable plate is connected to the guide shaft 8 through the sliding bushing 15, so that the L-shaped movable plate can move in the horizontal direction; the clamp is installed on the L-shaped movable plate through the table 3; the nut is installed on the side of the L-shaped movable plate, and the nut can be rotated so that when the screw rod rotates a specific angle, the clamp can be approached or moved away at the same time; the bearing is installed on the vertical bracket, located on the upper and lower sides of the screw rod 6, to axially position the screw rod 6 and ensure the smoothness of the rotation of the screw rod 6.
[0035] Specifically, the screw rod 6 is a bidirectional screw rod, the nut includes a left-handed screw rod nut 9 and a right-handed screw rod nut 10, and the L-shaped movable plate includes a left movable L plate 11 and a right movable L plate 12; the left-handed screw rod nut 9 is installed on the right side of the right movable L plate 12, and the right-handed screw rod nut 10 is installed on the right side of the left movable L plate 11; the clamping plate includes a left clamping plate 13 and a right clamping plate 14, the left clamping plate 13 passes through the table top 3 and is installed on the left movable L plate 11, and the right clamping plate 14 passes through the table top 3 and is installed on the right movable L plate 12; the bearing includes a left bearing 16 and a right bearing 17; the right bearing 17 is installed in the first vertical bracket, and the left bearing 16 is installed in the second vertical bracket.
[0036] Preferably, the clamp is set to an I-shaped structure to reduce the weight of the parts and avoid mutual obstruction between the window positioning plate 21 and the clamp, and between the clamp and the prefilling needle fixture 22. In addition, the lead of the nut and the screw 6 is selected to be self-locking, zero-gap, and long-stroke, so as to reduce the rotation angle of the screw 6 and reduce the time of locking and loosening the device.
[0037] The positioning assembly includes a positioning base 18, a pin 19, a compression spring 20 and a window positioning plate 21; the positioning base 18 is installed on the table 3, horizontally located between the left clamping plate 13 and the right clamping plate 14, and vertically located between the two guide shafts 8, and there is a long strip-shaped boss on the positioning base 18, and the boss structure shape is consistent with the base groove of the pen holder 24 to ensure the circumferential positioning accuracy of the pen holder; the window positioning plate 21 is connected to the left clamping plate 13 and the right clamping plate 14 respectively through the pin 19, and is located above the positioning base 18, and the window positioning plate 21 is set to a specific structure to limit the rotation of the pen holder 24 and prevent the clamping plate from being overloaded during use, thereby damaging the pen holder 24; the compression spring 20 is installed on the movable pin 19 to effectively buffer the overload clamping force. It should be noted that the total stroke of the window positioning plate 21 is the sum of the stroke of the L-shaped moving plate and the stroke of the compression spring 20.
[0038] In this embodiment, the device also includes a pre-filled needle jig 22 and a refill assembly jig 23; the pre-filled needle jig 22 is installed on the table 3, located on the right side of the right clamp 14 and adjacent to the right clamp 14; the refill assembly jig 23 is installed on the table 3, located on the right side of the pre-filled needle jig 22; the positioning base 18, the pre-filled needle jig 22 and the refill assembly jig 23 are located at the same horizontal position.
[0039] To sum up, the injection pen positioning device proposed in this embodiment has a compact structure and is suitable for a smaller space range; it relies on the rotation of the screw to clamp, and when the power of the screw is withdrawn, the self-locking property of the screw itself is relied upon to prevent the pen holder from shaking; the window positioning plate and the bottom groove together constrain the pen holder to make the positioning more accurate; and the compression springs arranged on both sides of the window positioning plate offset part of the clamping force, thereby preventing the clamping force from being overloaded and damaging the pen holder to a certain extent.
[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. An injection pen positioning device, characterized in that: Includes mounting rack, control components and positioning components; The positioning assembly is mounted on the mounting frame and is used to define the position of the pen holder; The control assembly is mounted on the mounting frame and is used to adjust the clamping and loosening of the pen holder.
2. The injection pen positioning device according to claim 1, characterized in that: The mounting frame comprises a bottom plate, a vertical bracket and a table top; the vertical bracket is mounted on the edges of both sides of the bottom plate, and the table top is mounted on the vertical bracket.
3. The injection pen positioning device according to claim 1, characterized in that: The control assembly includes a rotary cylinder, a transmission chuck, a screw rod, a guide block, and a guide shaft; the two ends of the guide shaft are respectively mounted on vertical brackets and are located on both sides of the screw rod; one end of the screw rod is connected to the transmission chuck mounted on the rotary cylinder, and the other end passes through the first vertical bracket and is connected to the second vertical bracket; the guide block is mounted on the screw rod and is located on the outside of the first vertical bracket.
4. The injection pen positioning device according to claim 3, characterized in that: The control assembly also includes a nut, an L-shaped movable plate, a clamping plate, a sliding bushing and a bearing; the L-shaped movable plate is connected to the guide shaft through the sliding bushing; the clamping plate is installed on the L-shaped movable plate through the table top; the nut is installed on the side of the L-shaped movable plate; the bearing is installed on the vertical bracket and is located on the upper and lower sides of the screw rod.
5. The injection pen positioning device according to claim 4, characterized in that: The nut includes a left-handed screw nut and a right-handed screw nut, and the L-shaped movable plate includes a left movable L plate and a right movable L plate; the left-handed screw nut is installed on the right side of the right movable L plate, and the right-handed screw nut is installed on the right side of the left movable L plate; the clamping plate includes a left clamping plate and a right clamping plate, the left clamping plate passes through the table top and is installed on the left movable L plate, and the right clamping plate passes through the table top and is installed on the right movable L plate.
6. The injection pen positioning device according to claim 4, characterized in that: The bearing comprises a left bearing and a right bearing; the right bearing is installed in a first vertical bracket, and the left bearing is installed in a second vertical bracket.
7. The injection pen positioning device according to claim 1, characterized in that: The positioning assembly includes a positioning base, a pin shaft, a compression spring and a window positioning plate; the positioning base is installed on the table top, horizontally located between the left clamping plate and the right clamping plate, and vertically located between the guide shafts; the window positioning plate is connected to the left clamping plate and the right clamping plate respectively through the pin shaft, and is located above the positioning base; the compression spring is installed on the pin shaft.
8. The injection pen positioning device according to claim 7, characterized in that: It also includes a pre-filled needle jig and a refill assembly jig; the pre-filled needle jig is installed on the table, located on the right side of the right clamp and adjacent to the right clamp; the refill assembly jig is installed on the table, located on the right side of the pre-filled needle jig; the positioning base, the pre-filled needle jig and the refill assembly jig are located at the same horizontal position.