Scale drum positioning fixture
By setting first and second positioning mechanisms on the graduated cylinder positioning fixture and using a servo motor to adjust the angle of the graduated cylinder, the problem of shaking caused by the gap between the graduated cylinder and the positioning fixture was solved, and accurate printing of the scale lines was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI PEIYU MEDICAL EQUIPMENT CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-06-26
AI Technical Summary
In existing technology, the gap between the scale cylinder and the positioning fixture causes the scale lines to wobble during printing, affecting accuracy.
The first and second positioning mechanisms are set on the carrier plate. The scale cylinder is fitted with the first positioning fixture, and the second positioning fixture is driven to rotate by the servo motor so that the notch abuts against the ribs of the scale cylinder, thereby adjusting the angle of the scale cylinder and ensuring the consistency of each rotation.
It achieves precise positioning of the scale cylinders, ensuring that each scale cylinder is in the same position, thus improving the printing accuracy of the scale lines.
Smart Images
Figure CN224407401U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tooling technology, specifically relating to positioning tooling, and more particularly to a graduated rotary cylinder positioning tooling. Background Technology
[0002] The graduated cylinder is the component in an injection pen used to determine the injection dosage. The graduations on it play an important indicative role, so the position of the graduations on the graduated cylinder needs to be very precise.
[0003] In related technologies, before printing the scale lines, the scale cylinder is usually placed on a positioning fixture and limited by a limit block.
[0004] However, this nested positioning method creates a certain gap between the scale cylinder and the positioning fixture, causing wobbling during printing and affecting the printing accuracy of the scale lines.
[0005] Therefore, how to solve the above problems is a problem that urgently needs to be solved by those skilled in the art.
[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0007] This disclosure provides at least one scale rotary drum positioning fixture.
[0008] This disclosure provides a graduated rotary cylinder positioning fixture, comprising: a carrier plate on which a first positioning mechanism and a second positioning mechanism are disposed; the first positioning mechanism includes: a first positioning fixture for fitting the graduated rotary cylinder; the second positioning mechanism includes: a second positioning fixture and a servo motor; a notch adapted to a rib on the inner wall of the graduated rotary cylinder is provided on the end face of the second positioning fixture; a control module is configured to control the first positioning mechanism to move the graduated rotary cylinder on the first positioning fixture toward the second positioning fixture until the rib is placed in the notch and abuts against the clamp, and is further configured to control the servo motor to rotate the second positioning fixture so that the notch abuts against the rib, thereby adjusting the angle of the graduated rotary cylinder.
[0009] In one optional embodiment, the first positioning mechanism and the second positioning mechanism are located on both sides of the carrier plate, and the first positioning fixture and the second positioning fixture are coaxially arranged.
[0010] In one optional embodiment, the first positioning mechanism further includes a linear motion module; wherein the linear motion module is disposed on a carrier plate, and the first positioning fixture is disposed on the linear motion module; the linear motion module is adapted to drive the first positioning fixture to move along the axis of the second positioning fixture.
[0011] In one optional embodiment, a pair of mounting blocks are provided on the moving part of the linear motion module; the first positioning mechanism further includes a mounting shaft; wherein the mounting shaft is connected to the two mounting blocks; the first positioning fixture is rotatably connected to the mounting shaft and is coaxially arranged with the mounting shaft.
[0012] In one alternative embodiment, a damper is provided at the end of the first positioning fixture facing the mounting shaft.
[0013] In one alternative embodiment, the damper includes: an elastic wire and a fixing block; wherein the elastic wire is mounted on a first positioning fixture; and the fixing block is connected to the elastic wire.
[0014] In one optional embodiment, the sidewall of the first positioning fixture is provided with an annular groove; the elastic wire is installed in the annular groove.
[0015] In one alternative embodiment, the end diameter of the first positioning fixture is adapted to the inner diameter of the graduated cylinder so that the graduated cylinder is clamped onto the first positioning fixture.
[0016] In one optional embodiment, the second positioning mechanism further includes: a bearing housing; a transmission link rotatably disposed on the bearing housing; the servo motor is connected to one end of the transmission link, and the second positioning fixture is connected to the other end of the transmission link.
[0017] In one alternative implementation, the servo motor is connected to a transmission link via a coupling.
[0018] The beneficial effect of this utility model is that the positioning of the scale rotating cylinder is achieved by the notch of the second positioning fixture covering the rib of the scale rotating cylinder, and the second positioning fixture is driven to rotate by the servo motor so that the notch abuts against the rib and then pushes the scale rotating cylinder to rotate. That is, it is only necessary to control the angle of the second positioning fixture to rotate consistently each time the servo motor drives it, thereby ensuring that each scale rotating cylinder is in the same posture.
[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.
[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of a graduated rotary drum positioning fixture provided in an embodiment of the present disclosure;
[0023] Figure 2 This is a schematic diagram of the mating structure of a second positioning fixture and a graduated rotary cylinder provided in an embodiment of this disclosure.
[0024] In the picture:
[0025] Carrier plate 1;
[0026] First positioning mechanism 2, first positioning fixture 21, annular groove 211, linear motion module 22, mounting block 23, mounting shaft 24, damper 25, elastic line 251, fixing block 252;
[0027] Second positioning mechanism 3, second positioning fixture 31, notch 311, servo motor 32, coupling 321, bearing seat 33, transmission link 34;
[0028] Scale rotating cylinder 4, rib 41. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the figures, the thickness of parts may be exaggerated or reduced for the purpose of effectively depicting the technical content.
[0031] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0032] like Figure 1 , Figure 2As shown, at least one embodiment provides a graduated cylinder positioning fixture, including: a carrier plate 1, on which a first positioning mechanism 2 and a second positioning mechanism 3 are disposed; the first positioning mechanism 2 includes: a first positioning fixture 21 for fitting the graduated cylinder 4; the second positioning mechanism 3 includes: a second positioning fixture 31 and a servo motor 32; a notch 311 adapted to the ribs 41 on the inner wall of the graduated cylinder 4 is provided on the end face of the second positioning fixture 31; a control module is configured to control the first positioning mechanism 2 to drive the graduated cylinder 4 on the first positioning fixture 21 to move toward the second positioning fixture 31 until the ribs 41 are placed in the notch 311 and abut against the clamp, and is also configured to control the servo motor 32 to drive the second positioning fixture 31 to rotate so that the notch 311 pushes against the ribs 41 to adjust the angle of the graduated cylinder 4.
[0033] In this embodiment, the width of the notch 311 is greater than the thickness of the rib 41, thereby ensuring that the notch 311 can cover the rib 41; at the same time, the first positioning fixture 21 and the second positioning fixture 31 clamp the scale cylinder 4 to prevent it from shaking; then the servo motor 32 drives the second positioning fixture 31 to rotate, so that the notch 311 abuts against the rib 41 and then pushes the scale cylinder 4 to rotate. At this time, it is only necessary to control the angle of the second positioning fixture 31 driven by the servo motor 32 to remain consistent each time, so that each scale cylinder 4 is in the same posture.
[0034] In some embodiments, this scale drum positioning fixture is used for secondary positioning of the scale drum 4. Since the ribs 41 inside the scale drum 4 may be placed on both sides of the notch 311, coarse positioning is required to ensure that the ribs 41 can only be placed on one side of the notch 311. That is, by cooperating with the vision camera and the driver, the approximate orientation of the scale drum 4 is kept consistent.
[0035] In some embodiments, the first positioning mechanism 2 and the second positioning mechanism 3 are located on both sides of the carrier plate 1, and the first positioning fixture 21 and the second positioning fixture 31 are coaxially arranged.
[0036] In this embodiment, since the inner hole of the scale cylinder 4 is a circular through hole, by setting the first positioning fixture 21 and the second positioning fixture 31 coaxially, the scale cylinder 4, the first positioning fixture 21 and the second positioning fixture 31 can all be in a coaxial state, so that the second positioning fixture 31 can be accurately inserted into the scale cylinder 4.
[0037] In some embodiments, the first positioning mechanism 2 further includes a linear motion module 22; wherein the linear motion module 22 is disposed on the carrier plate 1, and the first positioning fixture 21 is disposed on the linear motion module 22; the linear motion module 22 is adapted to drive the first positioning fixture 21 to move along the axis of the second positioning fixture 31.
[0038] In this embodiment, the linear motion module 22 is used to drive the scaled rotating cylinder 4 on the first positioning fixture 21 to cover the second positioning fixture 31.
[0039] In some embodiments, a pair of mounting blocks 23 are provided on the moving part of the linear motion module 22; the first positioning mechanism 2 further includes a mounting shaft 24; wherein the mounting shaft 24 is connected to the two mounting blocks 23; the first positioning fixture 21 is rotatably connected to the mounting shaft 24 and is coaxially arranged with the mounting shaft 24.
[0040] In this embodiment, the mounting shaft 24 is fixedly installed, and the first positioning fixture 21 is rotatably installed on the mounting shaft 24, that is, the first positioning fixture 21 can rotate when subjected to force.
[0041] In some embodiments, a damper 25 is provided at the end of the first positioning fixture 21 facing the mounting shaft 24.
[0042] In this embodiment, the damper 25 is used to ensure that the mounting shaft 24 only rotates with the rotation of the second positioning fixture 31. That is, the first positioning fixture 21 will only rotate by the same angle as the second positioning fixture 31, without rotating more or resetting.
[0043] In some embodiments, the damper 25 includes: an elastic wire 251 and a fixing block 252; wherein the elastic wire 251 is mounted on the first positioning fixture 21; and the fixing block 252 is connected to the elastic wire 251.
[0044] In this embodiment, the two ends of the elastic cord 251 are connected by uniformly fixed blocks 252, and the elastic cord 251 provides resistance by pressing against the first positioning fixture 21.
[0045] In some embodiments, the side wall of the first positioning fixture 21 is provided with an annular groove 211; the elastic wire 251 is installed in the annular groove 211.
[0046] In some embodiments, the end diameter of the first positioning fixture 21 is adapted to the inner diameter of the scale cylinder 4 so that the scale cylinder 4 is clamped onto the first positioning fixture 21.
[0047] In some embodiments, the second positioning mechanism 3 further includes: a bearing housing 33; a transmission link 34 is rotatably disposed on the bearing housing 33; a servo motor 32 is connected to one end of the transmission link 34, and a second positioning fixture 31 is connected to the other end of the transmission link 34.
[0048] In this embodiment, the bearing housing 33 facilitates the assembly of the servo motor 32 and the second positioning fixture 31.
[0049] In some embodiments, the servo motor 32 is connected to the transmission link 34 via a coupling 321.
[0050] In summary, the positioning of this scale cylinder is achieved by covering the rib 41 of the scale cylinder 4 with the notch 311 of the second positioning fixture 31, and driving the second positioning fixture 31 to rotate through the servo motor 32, so that the notch 311 abuts against the rib 41 and then pushes the scale cylinder 4 to rotate. That is, it is only necessary to control the angle of the second positioning fixture 31 to rotate consistently each time the servo motor 32 drives it, so that each scale cylinder 4 is in the same posture.
[0051] In this document, when it is said that the first component is located on the second component, this can mean that the first component can be directly formed on the second component, or that the third component can be inserted between the first component and the second component.
[0052] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0053] In this document, exemplary 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…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. 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.
[0054] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of 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 combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0055] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0056] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0057] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0058] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0059] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.
[0060] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A graduated rotary drum positioning fixture, characterized in that, include: The carrier plate (1) is provided with a first positioning mechanism (2) and a second positioning mechanism (3). The first positioning mechanism (2) includes: a first positioning fixture (21) for mounting the scale cylinder (4); The second positioning mechanism (3) includes: a second positioning fixture (31) and a servo motor (32); The end face of the second positioning fixture (31) is provided with a notch (311) that matches the rib (41) on the inner wall of the scale cylinder (4). The control module is configured to control the first positioning mechanism (2) to drive the scale cylinder (4) on the first positioning fixture (21) to move toward the second positioning fixture (31) until the rib (41) is placed in the notch (311) and abuts against the clamp. It is also configured to control the servo motor (32) to drive the second positioning fixture (31) to rotate so that the notch (311) pushes against the rib (41) to adjust the angle of the scale cylinder (4).
2. The graduated rotary drum positioning fixture as described in claim 1, characterized in that, The first positioning mechanism (2) and the second positioning mechanism (3) are located on both sides of the carrier plate (1), and the first positioning fixture (21) and the second positioning fixture (31) are coaxially arranged.
3. The graduated rotary drum positioning fixture as described in claim 2, characterized in that, The first positioning mechanism (2) further includes: a linear motion module (22); wherein The linear motion module (22) is mounted on the carrier plate (1), and the first positioning fixture (21) is mounted on the linear motion module (22); The linear motion module (22) is adapted to drive the first positioning fixture (21) to move along the axis of the second positioning fixture (31).
4. The graduated rotary drum positioning fixture as described in claim 3, characterized in that, A pair of mounting blocks (23) are provided on the moving part of the linear motion module (22); The first positioning mechanism (2) further includes: a mounting shaft (24); wherein The mounting shaft (24) is connected to the two mounting blocks (23); The first positioning fixture (21) is rotatably connected to the mounting shaft (24) and is coaxially arranged with the mounting shaft (24).
5. The graduated rotary drum positioning fixture as described in claim 4, characterized in that, The first positioning fixture (21) has a damper (25) at one end facing the mounting shaft (24).
6. The graduated rotary drum positioning fixture as described in claim 5, characterized in that, The damper (25) includes: an elastic wire (251) and a fixing block (252); wherein The elastic line (251) is mounted on the first positioning fixture (21); The fixing block (252) is connected to the elastic line (251).
7. The graduated rotary drum positioning fixture as described in claim 6, characterized in that, The side wall of the first positioning fixture (21) is provided with an annular groove (211). The elastic line (251) is installed in the annular groove (211).
8. The graduated rotary drum positioning fixture as described in claim 1, characterized in that, The end diameter of the first positioning fixture (21) is adapted to the inner diameter of the scale cylinder (4) so that the scale cylinder (4) is clamped on the first positioning fixture (21).
9. The graduated rotary drum positioning fixture as described in claim 1, characterized in that, The second positioning mechanism (3) also includes: a bearing housing (33); A transmission link (34) is rotatably mounted on the bearing housing (33). The servo motor (32) is connected to one end of the transmission link (34), and the second positioning fixture (31) is connected to the other end of the transmission link (34).
10. The graduated rotary drum positioning fixture as described in claim 9, characterized in that, The servo motor (32) is connected to the transmission link (34) via a coupling (321).