Pre-buckling assembly jig for injection pen
By designing a pre-retardation assembly fixture for injection pens, the automatic pre-retardation of upper and lower pen shell components is achieved by combining vertical long grooves and bosses, solving the problems of low efficiency and vulnerability of components during injection pen assembly process. , achieving the improvement of automated assembly and production efficiency.
Patent Information
- Application Number
- CN202421148115.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-24
AI Technical Summary
The assembly operation of existing injection pens is thin and brittle because the upper and lower pen shell components are easily damaged, resulting in low production efficiency, unable to meet actual needs, and manual operation is time-consuming and labor-intensive.
A pre-retardant assembly fixture for injection pens was designed. Through the guide rail assembly, lifting seat, moving seat and pronunciation insert on the bottom plate, the automatic pre-retardant of the upper and lower pen shell components is realized, and the vertical direction is used. The long groove and the boss cooperate to perform positioning and force conversion to avoid damage to the pen shell assembly during assembly.
The automatic assembly of the injection pen is realized, the production efficiency is improved, the damage to the pen shell assembly is avoided, the production needs are met, and the pre-retardation action is completed through automated machinery, which improves the stability and efficiency of assembly.
Smart Images
Figure CN222289306U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection pen assembly auxiliary equipment, in particular to a pre-fastening assembly fixture for injection pens. Background Art
[0002] In the actual assembly operation of the injection pen, usually the upper half and the lower half are first assembled to form an upper pen shell assembly and a lower pen shell assembly respectively, and then the upper and lower parts are assembled together.
[0003] In the prior art, since the outer shells of the upper and lower pen shell assemblies are both relatively thin and brittle, they are easily damaged when clamped under force. The final assembly operation is usually performed manually, which is time-consuming and labor-intensive, and the production efficiency cannot match the production rhythm, and cannot meet actual production needs. Utility Model Content
[0004] In order to solve the above problems, the present application provides a pre-snap-on assembly fixture for injection pens with a reasonable structure, so that the pre-snap-on action of the final assembly of the injection pen can be realized through automated machinery, which effectively helps to realize its automated assembly and improve production efficiency.
[0005] The technical solution adopted by the utility model is as follows:
[0006] A pre-fastening assembly fixture for an injection pen comprises a base plate, on which a plurality of assembly fixtures are arranged at intervals along the length direction, and the structure of a single assembly fixture is as follows: it comprises a guide rail assembly arranged along the width direction of the base plate, a lifting seat is installed across the guide rail assembly, and a moving seat 1 and a moving seat 2 are slidably mounted on the guide rail assembly located on the front and rear sides of the lifting seat; the moving seat 1 and the moving seat 2 are respectively embedded with profiling blocks on the facing sides, and the inner sides of the profiling blocks protrude outwardly to form a boss; a lower pen shell assembly is arranged in the lifting seat, and a vertical long groove corresponding to the boss is opened on the side of the lower pen shell assembly, and the length of the vertical long groove is greater than the vertical length of the boss.
[0007] As a further improvement of the above technical solution:
[0008] When the moving seat 1 and the moving seat 2 move toward each other to the extreme position, the profiling insert is located above the lifting seat, the bottom end of the lower pen shell assembly is inserted into the lower pen shell accommodating cavity of the lifting seat, and the two profiling inserts are located at the upper part of the lower pen shell assembly.
[0009] When the moving seat 1 and the moving seat 2 move toward each other to the limit position, there is a gap between the inner wall surface of the contoured insert and the outer wall surface of the lower pen housing component, and the boss extends into the vertical long groove.
[0010] A static reference part is installed on the top surface of the bottom plate, and dynamic reference parts are installed on the moving seat 1 and the moving seat 2; when the dynamic reference part is close to and fits with the static reference part, the corresponding moving seat 1 and the moving seat 2 move toward each other to the extreme position.
[0011] The moving seat 1 and the moving seat 2 move in the horizontal direction, the boss extends into the vertical long groove, and the distance between the top surface of the boss and the top surface in the vertical long groove is consistent with the pre-fastening distance.
[0012] A force transmission rod is installed on the moving seat of each group of assembly fixtures. The tail end of the force transmission rod is bent downward and extended to form a concave groove. A push-pull rod is installed in the concave groove of each force transmission rod. The external linear driving power drives each moving seat to move synchronously through the push-pull rod.
[0013] The movable seat 2 of each group of assembly fixtures is connected with another external linear driving power through another group of force transmission rods and push-pull rods.
[0014] The bottom plates on both sides of the guide rail assembly are symmetrically mounted with upright posts, the upper parts of the two upright posts are jointly covered with a lifting seat, and the upright posts on the bottom surface of the lifting seat are covered with elastic parts.
[0015] A fixed seat 1 and a fixed seat 2 are respectively fixedly installed on the bottom plates at the front and rear sides of the lifting seat, a guide rod is installed on the side of the fixed seat 1, the guide rod passes horizontally through the movable seat 1, and an elastic body is sleeved on the guide rod between the movable seat 1 and the fixed seat 1; another set of guide rods and elastic bodies are installed on the side of the fixed seat 2 relative to the movable seat 2.
[0016] An upper pen shell accommodating cavity is formed by extending on the side surface of one of the fixing seat 1 and the fixing seat 2, and the upper pen shell accommodating cavity is used for accommodating the upper pen shell assembly.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] The utility model has a compact structure and an ingenious design. The positioning during pre-fastening is achieved by fitting the vertical long groove on the lower pen shell component and the boss on the profiling insert. When the upper pen shell component is buckled downward and installed on the lower pen shell component, the lifting seat is forced to move downward, and the lower pen shell component moves downward guided by the cooperation between the vertical long groove and the boss until the profiling insert is forced through the boss and the pre-fastening operation is completed, so that the pre-fastening action of the final assembly of the injection pen can be achieved through an automated machine, and the force on the shell of the lower pen shell component is effectively avoided, so that the integrity thereof is maintained during the assembly process, and the automated assembly of the injection pen is effectively facilitated, the production efficiency is improved, the production rhythm and production requirements are met, and the practicability is good.
[0019] The utility model also has the following advantages:
[0020] In the utility model, the clamping and force during pre-fastening are cleverly transferred from the lower pen shell assembly housing to the lateral vertical long groove, and the force point of the lower pen shell assembly is converted, so that the lower pen shell assembly can withstand the force during pre-fastening, which helps to realize automated assembly.
[0021] During assembly, the contoured inserts on both sides of the lower pen shell assembly are close but not clamped, thereby providing circumferential protection for the lower pen shell assembly. The relative movement of the contoured inserts on both sides is limited by the contact between the dynamic reference part and the static reference part, thereby ensuring that the contoured inserts will not cause damage to the lower pen shell assembly while protecting it. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is the appearance structure diagram of the utility model.
[0023] Figure 2 It is a schematic diagram of the structure of the utility model (protective shell omitted).
[0024] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.
[0025] Figure 4 It is a structural schematic diagram of a single-group assembly fixture in the utility model.
[0026] Figure 5 It is an exploded view of a single-group assembly fixture in the utility model.
[0027] Among them: 1. bottom plate; 2. force transmission rod; 3. fixed seat 1; 4. lifting seat; 5. moving seat 1; 6. moving seat 2; 7. fixed seat 2; 8. contour insert; 9. guide rail assembly; 10. upper pen shell assembly; 20. lower pen shell assembly; 201. vertical long groove;
[0028] 11. Protective shell; 12. Static reference part; 13. Dynamic reference part;
[0029] 21. Push-pull rod; 22. Concave groove;
[0030] 31. Upper pen housing cavity;
[0031] 41. upright column; 42. elastic member; 43. lower pen housing cavity;
[0032] 81. Boss;
[0033] 91. Guide rod; 92. Elastomer. DETAILED DESCRIPTION
[0034] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.
[0035] like Figure 1 and Figure 2 As shown, the pre-fastening assembly fixture for the injection pen of this embodiment includes a base plate 1, on which a plurality of groups of assembly fixtures are arranged at intervals along the length direction, and the structure of a single group of assembly fixtures is as follows: it includes a guide rail assembly 9 arranged along the width direction of the base plate 1, a lifting seat 4 is installed across the guide rail assembly 9, and a moving seat 1 5 and a moving seat 2 6 are slidably mounted on the guide rail assembly 9 on the front and rear sides of the lifting seat 4; the moving seat 1 5 and the moving seat 2 6 are respectively embedded with contoured inserts 8 on the facing sides, and the inner sides of the contoured inserts 8 are convex outwardly facing to form a boss 81; the lifting seat 4 contains a lower pen shell assembly 20, and a vertical long groove 201 corresponding to the boss 81 is opened on the side of the lower pen shell assembly 20, and the length of the vertical long groove 201 is greater than the vertical length of the boss 81.
[0036] In this embodiment, the positioning during pre-fastening is achieved by fitting the vertical long groove 201 on the lower pen shell assembly 20 and the boss 81 on the contoured insert 8. When the upper pen shell assembly 10 is buckled downward and installed on the lower pen shell assembly 20, the lifting seat 4 is forced to move downward, and the lower pen shell assembly 20 moves downward guided by the cooperation between the vertical long groove 201 and the boss 81 until the contoured insert 8 is forced through the boss 81, and the pre-fastening operation is completed.
[0037] In this embodiment, the vertical long groove 201 is actually a window of the lower pen shell assembly 20, which cleverly transfers the clamping and force during pre-fastening from the shell of the lower pen shell assembly 20 to its lateral vertical long groove 201, thereby converting the force point of the lower pen shell assembly 20, so that the lower pen shell assembly 20 can withstand the force during pre-fastening, which helps to achieve automated assembly.
[0038] When the movable seat 1 5 and the movable seat 2 6 move toward each other to the extreme position, the contoured insert 8 is located above the lifting seat 4, and the bottom end of the lower pen shell assembly 20 is inserted into the lower pen shell accommodating cavity 43 of the lifting seat 4, and the two contoured inserts 8 are located in the upper part of the lower pen shell assembly 20.
[0039] In this embodiment, the inner side surface of the contoured insert 8 is concave to form a curved surface that matches the circumferential shape of the lower pen housing assembly 20, so that the contoured insert 8 can stably and reliably fit the lower pen housing assembly 20; and a boss 81 is formed on the curved surface and convexly extends outward to form a boss 81 for fitting in the vertical long groove 201.
[0040] During the pre-clamping process, the lower pen shell assembly 20 is supported by the lifting seat 4 at the bottom, and the contoured insert 8 provides axial protection for the lower pen shell assembly 20, but does not clamp it. The boss 81 extending from the inner side of the contoured insert 8 into the vertical long groove 201 of the lower pen shell assembly 20 serves as a guide and force during assembly.
[0041] When the movable seat 1 5 and the movable seat 2 6 move toward each other to the limit position, there is a gap between the inner wall surface of the contoured insert 8 and the outer wall surface of the lower pen housing assembly 20 , and the boss 81 extends into the vertical long groove 201 .
[0042] like Figure 3 As shown, a static reference member 12 is installed on the top surface of the base plate 1, and a dynamic reference member 13 is installed on the movable seat 1 5 and the movable seat 2 6; when the dynamic reference member 13 is close to and fits with the static reference member 12, the corresponding movable seat 1 5 and the movable seat 2 6 move toward each other to the extreme position.
[0043] In this embodiment, during assembly, the contoured inserts 8 located on both sides of the lower pen housing assembly 20 are close but not clamped, which provides circumferential protection for the lower pen housing assembly 20, and the contoured inserts 8 on both sides move toward each other by contact between the dynamic reference member 13 and the static reference member 12 to limit their positions, thereby ensuring that the contoured inserts 8 will not cause damage to the lower pen housing assembly 20 while protecting it.
[0044] The movable seat 1 5 and the movable seat 2 6 move in the horizontal direction, and the boss 81 extends into the vertical long groove 201. The distance between the top surface of the boss 81 and the inner top surface of the vertical long groove 201 is consistent with the pre-fastening distance. Therefore, when the lower pen shell assembly 20 is subjected to force and moves downward, the relative movement guidance and force can be achieved through the assembly of the vertical long groove 201 and the boss 81.
[0045] A force transmission rod 2 is installed on the movable seat 5 of each group of assembly fixtures, and the tail end of the force transmission rod 2 is bent downward and extended to form a concave groove 22. A push-pull rod 21 is commonly installed in the concave groove 22 of each force transmission rod 2. The external linear driving power drives the movable seats 5 to move synchronously through the push-pull rod 21, thereby realizing the synchronous movement of each group of assembly fixtures, realizing the use of one driving multiple, and improving and ensuring production efficiency.
[0046] The movable seat 2 6 of each assembly fixture is connected with another external linear driving power through another group of force transmission rods 2 and push-pull rods 21.
[0047] like Figure 4 and Figure 5 As shown, columns 41 are symmetrically installed on the bottom plate 1 on both sides of the guide rail assembly 9, and a lifting seat 4 is mounted on the upper parts of the two columns 41. An elastic member 42 is mounted on the column 41 located on the bottom surface of the lifting seat 4.
[0048] During the pre-fastening action, the lower pen shell assembly 20 is subjected to a downward force and moves downward synchronously with the lifting seat 4, and the elastic member 42 is compressed; after the pre-fastening, it is reset by the elastic force of the elastic member 42; at the same time, the elastic member 42 can achieve buffering force during this process.
[0049] A fixed seat 1 3 and a fixed seat 2 7 are fixedly installed on the bottom plate 1 located at the front and rear sides of the lifting seat 4, respectively. A guide rod 91 is installed on the side of the fixed seat 3. The guide rod 91 horizontally passes through the movable seat 1 5. An elastic body 92 is sleeved on the guide rod 91 located between the movable seat 1 5 and the fixed seat 3; another set of guide rods 91 and elastic bodies 92 are installed on the side of the fixed seat 2 7 relative to the movable seat 2 6.
[0050] When the external linear driving power drives the moving seat 1 5 and the moving seat 2 6 to move toward each other, the elastic body 92 is compressed to play a buffering role in the movement of the moving seat 1 5 and the moving seat 2 6 .
[0051] An upper pen housing accommodating cavity 31 is extended on the side surface of one of the fixing seat 1 3 and the fixing seat 2 7 , and the upper pen housing accommodating cavity 31 is used to place the upper pen housing assembly 10 .
[0052] In this embodiment, before pre-fastening, the upper pen shell assembly 10 can be placed in the upper pen shell accommodating cavity 31 of the assembly jig, and the lower pen shell assembly 20 can be placed in the lower pen shell accommodating cavity 43 of the lifting seat 4. The two are located close to each other, which is convenient for pre-fastening the upper pen shell accommodating cavity 31 onto the lower pen shell assembly 20 manually or by an external robot.
[0053] In this embodiment, a protective shell 11 is also included which is mounted on the bottom plate 1 from top to bottom, and the assembly jig is protected by the protective shell 11; a through hole corresponding to the lower pen shell accommodating cavity 43 is opened on the protective shell 11, and the upper pen shell accommodating cavity 31 passes upward and protrudes from the protective shell 11, so as to facilitate the placement and assembly of the upper pen shell assembly 10 and the lower pen shell assembly 20.
[0054] The usage of the utility model is:
[0055] The upper pen shell assembly 10 and the lower pen shell assembly 20 are placed in the upper pen shell accommodating cavity 31 and the lower pen shell accommodating cavity 43 respectively, and the movable seat 1 5 and the movable seat 2 6 move toward each other until the profiling block 8 is close to the lower pen shell assembly 20, and the boss 81 on the inner side of the profiling block 8 extends into the vertical long groove 201 on the side of the lower pen shell assembly 20; the upper pen shell assembly 10 is taken by a manual or external manipulator, and the upper pen shell assembly 10 is fitted on the lower pen shell assembly 20 from top to bottom, and a downward force is applied to buckle them together, and the lower pen shell assembly 20 and the lifting seat 4 move downward, and the vertical long groove 201 on the side of the lower pen shell assembly 20 and the boss 81 are fitted and moved relative to each other to provide guidance, limit and force; the pre-buckle operation of the injection pen is completed.
[0056] The pre-fastening assembly fixture in this embodiment can be used in the automated assembly production line of the injection pen, helping to achieve fully automated assembly of the injection pen.
[0057] The utility model can realize the pre-fastening action of the final assembly of the injection pen through automated machinery, and effectively avoids the stress on the shell of the lower pen shell assembly, maintains its integrity during the assembly process, effectively helps to realize the automated assembly of the injection pen, improves production efficiency, helps to meet production rhythm and production needs, and has good practicality.
[0058] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0059] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.
Claims
1. A pre-fastening assembly fixture for an injection pen, comprising a base plate (1), on which a plurality of assembly fixtures are arranged at intervals along the length direction, characterized in that: The structure of the single-group assembly fixture is as follows: it comprises a guide rail assembly (9) arranged along the width direction of a bottom plate (1), a lifting seat (4) is installed across the guide rail assembly (9), and a moving seat (5) and a moving seat (6) are respectively slidably mounted on the guide rail assembly (9) at the front and rear sides of the lifting seat (4); the moving seat (5) and the moving seat (6) are respectively embedded with profiling blocks (8) on the facing sides, and the inner sides of the profiling blocks (8) are protruding outwards to form a boss (81); the lifting seat (4) contains a lower pen shell assembly (20), and a vertical long groove (201) corresponding to the boss (81) is opened on the side of the lower pen shell assembly (20), and the length of the vertical long groove (201) is greater than the vertical length of the boss (81).
2. The pre-fastening assembly fixture for an injection pen according to claim 1, characterized in that: When the movable seat 1 (5) and the movable seat 2 (6) move toward each other to the extreme position, the profiling insert (8) is located above the lifting seat (4), the bottom end of the lower pen shell assembly (20) is inserted into the lower pen shell accommodating cavity (43) of the lifting seat (4), and the two profiling inserts (8) are located in an embrace at the upper part of the lower pen shell assembly (20).
3. The pre-fastening assembly fixture for an injection pen according to claim 1, characterized in that: The movable seat 1 (5) and the movable seat 2 (6) move toward each other to the limit position, a gap exists between the inner wall surface of the contoured insert (8) and the outer wall surface of the lower pen housing assembly (20), and the boss (81) extends into the vertical long groove (201).
4. The pre-fastening assembly jig for an injection pen according to claim 1, characterized in that: A static reference component (12) is installed on the top surface of the base plate (1), and a dynamic reference component (13) is installed on the movable seat 1 (5) and the movable seat 2 (6); when the dynamic reference component (13) and the static reference component (12) are close to each other, the corresponding movable seat 1 (5) and the movable seat 2 (6) move towards each other to the extreme position.
5. The pre-fastening assembly jig for an injection pen according to claim 1, characterized in that: The movable seat 1 (5) and the movable seat 2 (6) move in the horizontal direction, the boss (81) extends into the vertical long groove (201), and the distance between the top surface of the boss (81) and the inner top surface of the vertical long groove (201) is consistent with the pre-fastening distance.
6. The pre-fastening assembly jig for an injection pen according to claim 1, characterized in that: A force transmission rod (2) is respectively installed on the movable seat (5) of each group of assembly fixtures. The tail end of the force transmission rod (2) is bent downward and extended to form a concave groove (22). A push-pull rod (21) is commonly installed in the concave groove (22) of each force transmission rod (2). External linear driving power drives each movable seat (5) to move synchronously via the push-pull rod (21).
7. The pre-fastening assembly jig for an injection pen according to claim 6, characterized in that: The second movable seat (6) of each group of assembly fixtures is connected to another external linear driving power through another group of force transmission rods (2) and push-pull rods (21).
8. The pre-fastening assembly jig for an injection pen according to claim 1, characterized in that: Columns (41) are symmetrically mounted on the bottom plate (1) on both sides of the guide rail assembly (9), a lifting seat (4) is mounted on the upper parts of the two columns (41), and an elastic member (42) is mounted on the column (41) located on the bottom surface of the lifting seat (4).
9. The pre-fastening assembly jig for an injection pen according to claim 1, characterized in that: A fixed seat 1 (3) and a fixed seat 2 (7) are respectively fixedly mounted on the bottom plate (1) located at the front and rear sides of the lifting seat (4); a guide rod (91) is mounted on the side of the fixed seat 1 (3); the guide rod (91) passes horizontally through the movable seat 1 (5); an elastic body (92) is sleeved on the guide rod (91) located between the movable seat 1 (5) and the fixed seat 1 (3); another set of guide rods (91) and elastic bodies (92) are mounted on the side of the fixed seat 2 (7) relative to the movable seat 2 (6).
10. The pre-fastening assembly jig for an injection pen according to claim 9, characterized in that: An upper pen shell accommodating cavity (31) is formed by extending on the side surface of one of the fixing seat 1 (3) and the fixing seat 2 (7), and the upper pen shell accommodating cavity (31) is used to place the upper pen shell assembly (10).