Injection pen assembling equipment and assembling method thereof

Abstract

The invention belongs to the technical field of combination processing, and particularly relates to injection pen assembling equipment and an assembling method thereof. The injection pen assembling equipment comprises an assembling support, a mechanical arm, a clamping device and a control device, wherein the side wall of the assembling support is slidably provided with the mechanical arm; the assembling device is located below the mechanical arm and comprises a fixing table, a rotating shaft, a driving device and a driving device, and an assembling hole is vertically formed in the fixing table; the fixing column is located on the bottom wall of the assembly hole; the assembly part is arranged in the assembly hole in a lifting manner; wherein the moving sleeve sleeved with the reset spring is inserted into the assembly part, and the moving sleeve pushes all the sliding blocks of the assembly part to move outwards in the radial direction; each positioning block of the assembly part is pushed by the linkage ball to move inwards in the radial direction so as to limit the reset spring. The upper pen body vertically moves downwards to abut against the positioning block so as to push the assembly part to vertically move downwards, so that the moving sleeve and the reset spring are inserted into the upper pen body; through the arrangement of the assembly part, radial displacement of the reset spring in the assembly process can be avoided, and the assembly coaxiality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of assembly, and particularly relates to a machine for assembling different components into an assembly unit, and more particularly to an injection pen assembly device and an assembly method thereof. BACKGROUND

[0002] An injection pen is a medical device for accurately injecting medicine, and is widely used in self-management of chronic diseases such as diabetes and growth hormone deficiency. Its internal structure usually includes key components such as an upper pen body, a movement sleeve and a return spring. The assembly accuracy of the return spring with the upper pen body and the movement sleeve directly affects the dose accuracy and use reliability of the injection pen.

[0003] In the related art, during the assembly process of the injection pen, the assembly of the return spring with the upper pen body and the movement sleeve usually adopts a step-by-step sleeving method: first, the return spring is sleeved on the outer wall of the movement sleeve, and then the upper pen body is sleeved on the outer wall of the return spring. However, this method has obvious defects: During the assembly process, the return spring is prone to radial displacement or plastic deformation. Since the inner diameter of the upper pen body and the outer diameter of the return spring are usually in close fit, during the pressing process of the upper pen body, the return spring will be subjected to axial extrusion force. If the extrusion force is unevenly distributed or insufficiently guided, the return spring will produce radial displacement or plastic deformation, which will increase the coaxiality deviation of the return spring with the movement sleeve, and easily cause the injection pen to be stuck during use.

[0004] Therefore, how to avoid the radial displacement or deformation of the return spring during the assembly process of the injection pen is a technical problem that needs to be solved in the field.

[0005] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, the above description is not considered as information of the related art. SUMMARY

[0006] The present disclosure provides at least an injection pen assembly device and an assembly method thereof.

[0007] In a first aspect, the present disclosure provides an injection pen assembly device, comprising: An assembly support, a side wall of which is slidably provided with a mechanical hand; An assembly device located below the mechanical hand, comprising: A fixed table vertically provided with an assembly hole; A fixed column located at the bottom wall of the assembly hole for limiting the movement of the movement sleeve; An assembly part, which is vertically arranged in the assembly hole and has an inner diameter greater than that of the fixed column; The movement sleeve with the reset spring is inserted into the assembly, and each sliding block of the assembly is pushed by the movement sleeve to move radially outward; Each positioning block of the assembly moves radially inward to limit the reset spring; The upper pen body moves vertically downward to abut against the positioning block, so as to push the assembly to move vertically downward, and the movement sleeve and the reset spring are inserted into the upper pen body.

[0008] In an alternative embodiment, the assembly comprises: A limiting disc is lifted and lowered in the assembly hole, and a limiting hole is formed at the shaft center; The limiting disc is radially provided with at least two accommodating cavities, and one accommodating cavity corresponds to one sliding block; An elastic member is located in the accommodating cavity, and two ends thereof respectively abut against the side wall of the accommodating cavity and the outer wall of the sliding block; A linkage ball is located above the sliding block and abuts against the bottom wall of the positioning block; When the sliding block moves radially outward, the linkage ball is pushed to move upward; The linkage ball pushes the positioning block to move radially inward to abut against the reset spring.

[0009] In an alternative embodiment, the upper surface of the sliding block is provided with a first inclined surface, and the horizontal height of the first inclined surface gradually increases from the outer end to the inner end of the sliding block; When the sliding block is retracted into the accommodating cavity, the first inclined surface pushes the linkage ball to move upward.

[0010] In an alternative embodiment, the bottom wall of the positioning block is provided with a second inclined surface matched with the linkage ball, and the inclination direction of the second inclined surface is opposite to that of the first inclined surface; When the linkage ball moves upward and abuts against the second inclined surface, the positioning block is pushed to move radially inward.

[0011] In an alternative embodiment, the diameter of the limiting hole is greater than that of the fixed column; The movement sleeve is adapted to be inserted into the limiting hole, and the diameter of the movement sleeve is greater than that of the fixed column.

[0012] In an alternative embodiment, the inner end of the sliding block is arc-shaped matched with the movement sleeve; and the upper surface of the sliding block is further provided with a third inclined surface, and the inclination direction of the third inclined surface is opposite to that of the first inclined surface.

[0013] In an alternative embodiment, when each sliding block is retracted into the corresponding accommodating cavity to abut against the bottom wall of the movement sleeve and the surface of the fixed column, the third inclined surface abuts against the bottom wall of the movement sleeve.

[0014] In an alternative embodiment, a compression spring is arranged in the bottom wall of the assembly hole, and the upper end of the compression spring is in abutment with the bottom wall of the assembly part.

[0015] In a second aspect, the embodiments of the present disclosure provide an injection pen assembling device, which comprises: a fixing table vertically provided with an assembly hole; a fixing column arranged at the bottom wall of the assembly hole and used for limiting the movement of a movement sleeve; a limiting disc arranged in the assembly hole and vertically movable, and a limiting hole is arranged at the shaft center of the limiting disc; at least two accommodating cavities are radially arranged in the limiting disc, and a sliding block is slidably arranged in one of the accommodating cavities; a resilient member is arranged in the accommodating cavity and in abutment with the side wall of the accommodating cavity and the outer wall of the sliding block at two ends thereof; at least two positioning blocks, one positioning block corresponding to one sliding block, and the positioning blocks are radially slidably arranged in the limiting disc, a linkage ball arranged above the sliding block and in abutment with the bottom wall of the positioning block.

[0016] In an alternative embodiment, a first inclined surface is arranged on the upper surface of the sliding block, and the horizontal height of the first inclined surface gradually increases from the outer end to the inner end of the sliding block; wherein when the sliding block is retracted into the accommodating cavity, the first inclined surface pushes the linkage ball to move upward.

[0017] In an alternative embodiment, a second inclined surface is arranged on the bottom wall of the positioning block and matched with the linkage ball, and the inclination direction of the second inclined surface is opposite to that of the first inclined surface; wherein when the linkage ball moves upward and is in abutment with the second inclined surface, the positioning block is pushed to move radially inward.

[0018] In a third aspect, the embodiments of the present disclosure further provide an assembling method of an injection pen, which comprises: a movement sleeve provided with a reset spring is inserted into an assembly part, and each sliding block of the assembly part is pushed by the movement sleeve to move radially outward; each positioning block of the assembly part moves radially inward to limit the reset spring; the upper pen body is moved vertically downward to be in abutment with the positioning block, so as to push the assembly part to move vertically downward, until the movement sleeve and the reset spring are inserted into the upper pen body.

[0019] The beneficial effects of the present application are that the injection pen assembling device and the assembling method thereof are provided, through cooperation of the assembling part and the mechanical hand, after the mechanical hand inserts the movement sleeve provided with the reset spring into the assembling part, the sliding block of the assembling part moves outward, so that the bottom wall of the movement sleeve abuts against the fixed column, and meanwhile, each positioning block moves inward and abuts against the reset spring of the outer wall of the movement sleeve, so as to play the effect of limiting the reset spring; the mechanical hand again clamps the upper pen body and inserts it into the limiting hole, the upper pen body abuts against the positioning block, so as to push the assembling part to move downward, until the movement sleeve and the reset spring are inserted into the upper pen body. Through the setting of the assembling part, the radial displacement of the reset spring in the assembling process can be avoided, and the coaxiality of assembling is ensured.

[0020] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the description and the drawings.

[0021] In order to make the above-mentioned objects, characteristics and advantages of the present application more obvious and easy to understand, the preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the related technical description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0023] Figure 1 A perspective view of the injection pen assembling device provided by the embodiment of the present disclosure is shown in the figure. Figure 2 A perspective view of the assembling device provided by the embodiment of the present disclosure is shown in the figure. Figure 3 A perspective view of the assembling device provided by the embodiment of the present disclosure is shown in the figure. Figure 2 A sectional perspective view of the A-A view is shown in the figure. Figure 4 A perspective view of the assembling device provided by the embodiment of the present disclosure is shown in the figure. Figure 2 A front view of the injection pen in the A-A view is shown in the figure. Figure 5 A perspective view of the injection pen provided by the embodiment of the present disclosure is shown in the figure. Figure 6 An expanded perspective view of the injection pen provided by the embodiment of the present disclosure is shown in the figure.

[0024] In the figure: 1, assembling support; 10, mechanical hand; 2, assembling device; 21, fixing table; 22, fixing column; 23, assembling hole; 24, assembling piece; 241, sliding block; 242, positioning block; 243, limiting disc; 244, limiting hole; 245, accommodating cavity; 246, elastic piece; 247, linkage ball; 248, first inclined surface; 249, second inclined surface; 250, third inclined surface; 25, compression spring; 3, moving sleeve; 4, return spring; 5, upper pen body; 6, lower pen body. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0026] In this document, when it is mentioned that a first component is on a second component, it can mean that the first component can be formed directly on the second component, or a third component can be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components can be exaggerated or reduced.

[0027] In this document, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of... " when following a list of elements modify the entire list of elements. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0028] The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular articles "a," "an," and "the" can be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are discussed or illustrated, unless specifically identified as an order of performance. Additional or alternative steps can be employed.

[0029] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” and the like generally mean the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present disclosure. Thus, features, structures, or characteristics in some embodiments can be included in more than one embodiment of the present disclosure, and the phrases, “in one embodiment,” “according to one embodiment,” “in some embodiments,” and the like are not necessarily referring to the same embodiment. As used herein, the terms “for example,” “e.g.,” and the like indicate that the example(s) that follows is / are merely an example or instances and is / are not the only, or an exhaustive, list of options that can be utilized.

[0030] It is found through research that in the related art, the reset spring and the upper pen body and the movement sleeve are assembled in a step-by-step sleeving manner during assembly of the injection pen: first, the reset spring is sleeved on the outer wall of the movement sleeve, and then the upper pen body is sleeved on the outer wall of the reset spring. However, this manner has obvious defects: The reset spring is prone to radial displacement and deformation during assembly. Since the inner diameter of the upper pen body and the outer diameter of the reset spring are usually in close fit, the reset spring will be subjected to axial extrusion force during the pressing-in process of the upper pen body. If the extrusion force is unevenly distributed or insufficiently guided, the reset spring will produce radial displacement or even plastic deformation, resulting in an increased deviation of the coaxiality of the reset spring and the movement sleeve, which is likely to cause the injection pen to be stuck during use.

[0031] Therefore, how to avoid radial displacement or deformation of the reset spring during assembly of the injection pen is a technical problem that needs to be solved in the art.

[0032] The defects of the above-mentioned solutions and the causes thereof are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above-mentioned problems and the solutions proposed by the present disclosure to solve the above-mentioned problems should be the contributions made by the inventors to the present disclosure in the process of the present disclosure.

[0033] It should be noted that similar reference numerals and letters refer to similar items throughout the accompanying drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0034] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the embodiments described below and the features in the embodiments can be combined with each other.

[0035] As shown in Figure 1 At least one embodiment provides an injection pen assembly device, which includes: The assembly support 1 is provided with a mechanical hand 10 on the side wall; one side of the assembly support 1 is provided with a conveying belt, the movement sleeve 3 sleeved with the reset spring 4 and the upper pen body 5 are conveyed to the lower side of the mechanical hand 10 through the conveying belt. The mechanical hand 10 clamps the movement sleeve 3 and inserts it into the assembling device 2, then clamps the upper pen body 5, and assembles the upper pen body 5 on the outer wall of the movement sleeve 3 through the assembling device 2. The embodiment is one step in the injection pen assembling process. Figure 5 As shown in the figure, in the embodiment, the injection pen comprises the upper pen body 5, the lower pen body 6 and the movement sleeve 3 fixedly connected with the lower pen body 6.

[0036] Referring to the accompanying drawings Figure 2 The assembling device 2 is located below the mechanical hand 10, and the assembling device 2 is horizontally placed and comprises a fixed table 21, the fixed table 21 is rectangular and vertically provided with an assembling hole 23; a fixed column 22 is located at the bottom wall of the assembling hole 23 and used for limiting the movement of the movement sleeve 3; the outer diameter of the fixed column 22 is smaller than the inner diameter of the limiting hole 244, the movement sleeve 3 is adapted to be inserted into the limiting hole 244 and has a diameter larger than that of the fixed column 22. That is, when the movement sleeve 3 is vertically inserted into the limiting hole 244 and abuts against the fixed column 22, the bottom end outer wall of the movement sleeve 3 protrudes from the fixed column 22. An assembling part 24 is vertically arranged in the assembling hole 23 and has an inner diameter larger than that of the fixed column 22; in the initial state, the compressed spring 25 pushes the assembling part 24 to move upward, at this time, the sliding block 241 in the assembling part 24 is located above the fixed column 22, after the movement sleeve 3 sleeved with the reset spring 4 is inserted into the limiting hole 244, the bottom wall of the movement sleeve 3 abuts against the third inclined surface 250, and the sliding blocks 241 are synchronously pushed outward by the movement sleeve 3.

[0037] The movement sleeve 3 sleeved with the reset spring 4 is inserted into the assembling part 24, the sliding blocks 241 of the assembling part 24 are pushed by the movement sleeve 3 to move radially outward, the positioning blocks 242 of the assembling part 24 move radially inward to limit the reset spring 4, and the upper pen body 5 moves vertically downward to abut against the positioning blocks 242, so as to push the assembling part 24 to move vertically downward, until the movement sleeve 3 and the reset spring 4 are inserted into the upper pen body 5. Through the cooperation of the assembling part 24 and the mechanical hand 10, after the mechanical hand 10 inserts the movement sleeve 3 sleeved with the reset spring 4 into the assembling part 24, the sliding blocks 241 of the assembling part 24 move outward, so that the bottom wall of the movement sleeve 3 abuts against the fixed column 22, and at the same time, the positioning blocks 242 move inward to abut against the reset spring 4 on the outer wall of the movement sleeve 3, so as to limit the reset spring 4; the mechanical hand 10 clamps the upper pen body 5 again and inserts it into the limiting hole 244, the upper pen body 5 abuts against the positioning blocks 242 to push the assembling part 24 to move downward, until the movement sleeve 3 and the reset spring 4 are inserted into the upper pen body 5. Through the arrangement of the assembling part 24, the radial displacement of the reset spring 4 in the assembling process can be avoided, and the coaxiality in the assembling process is ensured.

[0038] Referring to the drawings Figure 3 The assembly piece 24 comprises a limiting disc 243 which is lifted in the assembly hole 23 and has a limiting hole 244 at the shaft center; a compression spring 25 is arranged on the bottom wall in the assembly hole 23, the upper end of the compression spring 25 abuts against the limiting disc 243 of the assembly piece 24, the compression spring 25 is suitable for pushing the limiting disc 243 to move upward, after the upper pen body 5 is sleeved on the moving sleeve 3 and the return spring 4, when the limiting disc 243 moves upward, the third inclined surface 250 of each sliding block 241 abuts against the bottom wall of the moving sleeve 3, so that the moving sleeve 3 and the upper pen body 5 are separated from the limiting hole 244. The limiting disc 243 is radially provided with at least two accommodating cavities 245, one accommodating cavity 245 corresponds to one sliding block 241; the accommodating cavities 245 extend along the radial direction of the limiting disc 243, further, a plurality of sliding grooves are arranged in the limiting disc 243, the sliding grooves extend along the radial direction of the limiting disc 243 and are parallel to the accommodating cavities 245, one sliding groove corresponds to one positioning block 242, and the positioning block 242 is slidably arranged in the sliding groove. In the initial state, i.e. when the moving sleeve 3 is not inserted into the limiting hole 244, the positioning block 242 is retracted in the sliding groove, and the outer end wall of the positioning block 242 does not protrude from the inner wall of the limiting hole 244; a tension spring is arranged in the sliding groove, one end of the tension spring is fixed to the inner wall of the positioning block 242, and the tension spring is suitable for pulling the positioning block 242 to retract inwardly into the sliding groove. An elastic member 246 is arranged in the accommodating cavity 245, and the two ends of the elastic member 246 abut against the side wall of the accommodating cavity 245 and the outer wall of the sliding block 241 respectively; further, the elastic member 246 is a spring. A linkage ball 247 is arranged above the sliding block 241 and abuts against the bottom wall of the positioning block 242; wherein, when the sliding block 241 slides outwardly in the radial direction, the linkage ball 247 is pushed to move upward; the linkage ball 247 pushes the positioning block 242 to move inwardly in the radial direction to abut against the return spring 4.

[0039] Continuing to refer to the drawings Figure 3, the upper surface of the sliding block 241 is provided with a first inclined surface 248, the horizontal height of the first inclined surface 248 gradually increases from the outer end to the inner end of the sliding block 241; the bottom wall of the positioning block 242 is provided with a second inclined surface 249 matched with the linkage ball 247, the inclination direction of the second inclined surface 249 is opposite to that of the first inclined surface 248; in the initial state, the linkage ball 247 abuts against the first inclined surface 248, at this time, the horizontal height of the linkage ball 247 is in the lowest state. At this time, the positioning block 242 is retracted in the sliding groove, that is, at this time, the positioning block 242 does not protrude from the inner wall of the limiting hole 244. When the movement sleeve 3 sleeved with the reset spring 4 is inserted into the limiting hole 244, the movement sleeve 3 abuts against the third inclined surface 250 to push each sliding block 241 to move outward, when the sliding block 241 retracts into the accommodating cavity 245, the first inclined surface 248 pushes the linkage ball 247 to move upward. The linkage ball 247 abuts against the second inclined surface 249 to push the corresponding positioning block 242 to move inward synchronously, until the positioning block 242 abuts against the reset spring 4 to limit the radial movement of the reset spring 4.

[0040] Reference is made to the accompanying drawings Figure 4 , the diameter of the limiting hole 244 is greater than that of the fixed column 22; the movement sleeve 3 is adapted to be inserted into the limiting hole 244, and the diameter is greater than that of the fixed column 22. The inner end of the sliding block 241 is matched with the arc of the movement sleeve 3; the upper surface of the sliding block 241 is further provided with a third inclined surface 250, the inclination direction of the third inclined surface 250 is opposite to that of the first inclined surface 248.

[0041] Reference is made to the accompanying drawings Figure 4 After assembly, the mechanical hand 10 moves upward, the downward pressure of the mechanical hand 10 on the pen body 5 disappears, the reset spring 4 pushes the limiting disc 243 to move upward, each sliding block 241 retracts into the corresponding accommodating cavity 245 until the bottom wall of the movement sleeve 3 abuts against the surface of the fixed column 22, at this time, the third inclined surface 250 abuts against the bottom wall of the movement sleeve 3.

[0042] Reference is made to the accompanying drawings Figure 4 During assembly, the movement sleeve 3 sleeved with the reset spring 4 is inserted into the limiting hole 244 of the assembly part 24, the movement sleeve 3 pushes the sliding block 241 to slide radially outward, the first inclined surface 248 on the upper surface of the sliding block 241 synchronously pushes the linkage ball 247 to move upward; when the linkage ball 247 moves upward, the second inclined surface 249 of the bottom wall of the positioning block 242 is pushed to move the positioning block 242 radially inward synchronously, the inner end of the positioning block 242 abuts against the reset spring 4 to limit the reset spring 4. Figure 4In the specific injection pen assembly device, F1 represents the radial extrusion force of the movement sleeve 3 on the sliding block 241; F2 represents the axial thrust of the first inclined surface 248 on the linkage ball 247; and F3 represents the thrust of the linkage ball 247 pushing the positioning block 242 inward. At least one embodiment provides an injection pen assembly device, comprising: a fixed table 21 vertically provided with an assembly hole 23; a fixed column 22 located at the bottom wall of the assembly hole 23 for limiting the movement of the movement sleeve 3; a limiting disc 243 vertically located in the assembly hole 23 and provided with a limiting hole 244 at the shaft center; the limiting disc 243 is radially provided with at least two accommodating cavities 245, and one sliding block 241 is slidingly arranged in one accommodating cavity 245; an elastic member 246 is located in the accommodating cavity 245 and respectively abuts against the side wall of the accommodating cavity 245 and the outer wall of the sliding block 241 at both ends; at least two positioning blocks 242, one positioning block 242 corresponding to one sliding block 241, are radially slidingly arranged in the limiting disc 243; and a linkage ball 247 is located above the sliding block 241 and abuts against the bottom wall of the positioning block 242.

[0043] The working principle of the specific injection pen assembly device is as follows: When the mechanical hand 10 clamps the movement sleeve 3 provided with the reset spring 4 vertically and inserts it into the limiting hole 244 and abuts against the fixed column 22, the bottom end of the fixed column 22 protrudes out of the fixed column 22; The movement sleeve 3 extrudes each sliding block 241 to move outward, and the sliding block 241 extrudes the elastic member 246 to compress and deform when moving radially outward, and at the same time pushes the linkage ball 247 upward through the first inclined surface 248; The linkage ball 247 pushes the second inclined surface 249 when moving upward, so that each positioning block 242 moves radially inward, and the positioning block 242 abuts against the reset spring 4 sleeved on the outside of the movement sleeve 3 when moving inward, so as to achieve the effect of radially limiting the reset spring 4.

[0044] The mechanical hand 10 clamps the upper pen body 5 again and inserts it into the limiting hole 244, and the bottom wall of the upper pen body 5 abuts against the upper surface of the positioning block 242 to push the assembly part 24 vertically downward, that is, the limiting disc 243, the sliding block 241 and the positioning block 242 move downward synchronously, at this time, the upper pen body 5 moves downward relative to the movement sleeve 3, so that the movement sleeve 3 and the reset spring 4 are inserted into the upper pen body 5; the limiting disc 243 drives the positioning block 242 to move downward along the axial direction of the reset spring 4, avoiding the radial movement of the reset spring 4 when being inserted into the upper pen body 5.

[0045] After the assembly is completed, the mechanical arm 10 moves upward, the downward pressure of the mechanical arm 10 on the upper pen body 5 disappears, the reset spring 4 pushes the limiting disc 243 to move upward, the third inclined surface 250 abuts against the bottom wall of the movement sleeve 3 to push the movement sleeve 3 and the upper pen body 5 to separate from the limiting hole 244. At least one embodiment provides an assembly method of an injection pen, which comprises: inserting the movement sleeve 3 provided with the reset spring 4 into the assembly part 24, the sliding blocks 241 of the assembly part 24 are pushed by the movement sleeve 3 to move radially outward; the positioning blocks 242 of the assembly part 24 move radially inward to limit the reset spring 4; the upper pen body 5 moves vertically downward to abut against the positioning blocks 242 to push the assembly part 24 to move vertically downward, and the movement sleeve 3 and the reset spring 4 are inserted into the upper pen body 5.

[0046] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or integral connection; can be mechanical connection, can be electrical connection; can be direct connection, can be indirect connection through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, terms such as "first", "second" and other numerical terms are used herein and do not imply sequence or order unless expressly indicated herein. Therefore, the first element, component, region, layer or section discussed above can be referred to as the second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0048] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined by the scope of the claims.

Claims

1. An injection pen assembly apparatus, characterized by, The utility model relates to an injection pen assembling equipment, including: an assembling support (1) with a mechanical arm (10) slidingly arranged on the side wall thereof; an assembling device (2) located below the mechanical arm (10) and comprising: a fixing table (21) vertically provided with an assembling hole (23); a fixing column (22) located at the bottom wall of the assembling hole (23) and used for limiting the movement of a movement sleeve (3); an assembling part (24) vertically arranged in the assembling hole (23) and having an inner diameter larger than that of the fixing column (22); wherein the movement sleeve (3) with a reset spring (4) sleeved thereon is inserted into the assembling part (24), and the movement sleeve (3) pushes each sliding block (241) of the assembling part (24) to move radially outward; each positioning block (242) of the assembling part (24) is pushed to move radially inward by a linkage ball (247) to limit the reset spring (4); an upper pen body (5) is vertically moved downward to abut against the positioning block (242) to push the assembling part (24) to move vertically downward, so that the movement sleeve (3) and the reset spring (4) are inserted into the upper pen body (5).

2. The injection pen assembling equipment according to claim 1, wherein: the assembling part (24) comprises: a limiting disc (243) vertically arranged in the assembling hole (23) and provided with a limiting hole (244) at the axis thereof; the limiting disc (243) is radially provided with at least two accommodating cavities (245), and one accommodating cavity (245) corresponds to one sliding block (241); a resilient part (246) is located in the accommodating cavity (245) and abuts against the side wall of the accommodating cavity (245) and the outer wall of the sliding block (241) at two ends thereof; a linkage ball (247) is located above the sliding block (241) and abuts against the bottom wall of the positioning block (242); when the sliding block (241) moves radially outward, the linkage ball (247) is pushed to move upward; the positioning block (242) is pushed to move radially inward by the linkage ball (247) to abut against the reset spring (4).

3. The injection pen assembling equipment according to claim 2, wherein: a first inclined surface (248) is arranged on the upper surface of the sliding block (241), and the horizontal height of the first inclined surface (248) gradually increases from the outer end to the inner end of the sliding block (241); when the sliding block (241) is retracted into the accommodating cavity (245), the first inclined surface (248) pushes the linkage ball (247) to move upward.

4. The injection pen assembling equipment according to claim 3, wherein: a second inclined surface (249) adapted to the linkage ball (247) is arranged on the bottom wall of the positioning block (242), and the inclination direction of the second inclined surface (249) is opposite to that of the first inclined surface (248); when the linkage ball (247) moves upward to abut against the second inclined surface (249), the positioning block (242) is pushed to move radially inward.

5. The injection pen assembling equipment according to claim 2, wherein: the diameter of the limiting hole (244) is larger than that of the fixing column (22); the movement sleeve (3) is adapted to be inserted into the limiting hole (244) and has a diameter larger than that of the fixing column (22).

6. The injection pen assembly device of claim 3, wherein, the inner end of the sliding block (241) is arc-shaped and adapted to the outer wall of the movement sleeve (3); the upper surface of the sliding block (241) is further provided with a third inclined surface (250) which is opposite to the first inclined surface (248).

7. The injection pen assembly device of claim 6, wherein, when each sliding block (241) is retracted into the corresponding accommodating cavity (245) until the bottom wall of the movement sleeve (3) abuts against the surface of the fixed column (22), the third inclined surface (250) abuts against the bottom wall of the movement sleeve (3).

8. The injection pen assembly device of claim 1, wherein, a compression spring (25) is arranged on the inner bottom wall of the assembly hole (23), and the upper end of the compression spring (25) abuts against the bottom wall of the assembly part (24).

9. An injection pen assembly apparatus, characterized by, comprising: a fixed table (21) vertically provided with an assembly hole (23); a fixed column (22) arranged on the bottom wall of the assembly hole (23) for limiting the movement of the movement sleeve (3); a limiting disc (243) arranged in the assembly hole (23) and provided with a limiting hole (244) at the shaft center; the limiting disc (243) is radially provided with at least two accommodating cavities (245), and each accommodating cavity (245) is slidably provided with a sliding block (241); a resilient member (246) arranged in the accommodating cavity (245) and abutting against the side wall of the accommodating cavity (245) and the outer wall of the sliding block (241) at both ends; at least two positioning blocks (242), one positioning block (242) corresponding to one sliding block (241), and the positioning block (242) being radially slidably arranged in the limiting disc (243), a linkage ball (247) arranged above the sliding block (241) and abutting against the bottom wall of the positioning block (242).

10. The injection pen assembly device of claim 9, wherein, the upper surface of the sliding block (241) is provided with a first inclined surface (248) which gradually increases in height from the outer end to the inner end of the sliding block (241); when the sliding block (241) is retracted into the accommodating cavity (245), the first inclined surface (248) pushes the linkage ball (247) to move upward.

11. The injection pen assembly device of claim 10, wherein, the bottom wall of the positioning block (242) is provided with a second inclined surface (249) which is adapted to the linkage ball (247) and opposite to the first inclined surface (248); when the linkage ball (247) moves upward and abuts against the second inclined surface (249), the positioning block (242) is pushed to move radially inward.

12. A method of assembling an injection pen, characterized by, The injection pen assembly device of any one of claims 1-11, the assembly method comprising: the movement sleeve (3) provided with the reset spring (4) is inserted into the assembly part (24), and each sliding block (241) of the assembly part (24) is pushed by the movement sleeve (3) to move radially outward. The positioning blocks (242) of the assembly (24) are moved radially inward to limit the return spring (4); The upper pen body (5) is moved vertically downward to abut against the positioning blocks (242) to push the assembly (24) to move vertically downward until the movement sleeve (3) and the return spring (4) are inserted into the upper pen body (5).

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