Positioning clamp

Abstract

The utility model discloses a positioning clamp which comprises a positioning assembly, and the positioning assembly comprises a fixing block, a threaded part, a limiting part and a main body. The fixing block is a T-shaped cylinder and comprises an upper cylinder body and a lower cylinder body which are coaxially arranged, the thread part is arranged on the side face of the upper cylinder body, and a cup cover thread matched with the cup body is carved on the thread shape of the thread part; the multiple limiting parts are arranged in a protruding mode along the side face of the bottom of the upper column body, the internal threads of the cup body are in threaded fit with the threaded parts, and the cup body can rotate to move downwards till the cup body abuts against the limiting parts for limiting. The utility model has the beneficial effects that the thread shape of the cup cover is directly re-engraved to simulate the screwing matching of the cup cover and the cup body, the positioning step of the marking machine on the cup body is omitted, only the positioning of the marking machine in space coordinates is realized, the positioning requirement on the marking machine is greatly reduced, the scheme is simple and quick, the cost is low, the positioning belongs to re-engraving, and the accuracy is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent and automatic production of heat preservation cups, in particular to a positioning fixture. Background Art

[0002] In the production process of heat preservation cups, due to the relative angle requirement between the position of the logo on the cup lid and the position of the handle on the cup body, that is, after the cup lid is tightened, the handle on the cup body needs to be welded at the relative position of the logo position. That is, with the logo position on the cup lid as a reference, the position of the handle on the cup body is determined, and the position of the handle is determined by the connecting piece or spot welding piece on the cup body. At present, in the automatic production process of heat preservation cups, the cup body passes through the processing equipment workstations arranged in the flow processing process, such as the feeding position, welding position, cutting, polishing and other workstations. However, there is no corresponding positioning workstation and equipment for the welding process of the cup body handle. The current operation is that after manually screwing the cup lid by hand, after measuring the corresponding angles and heights, then making marks on the cup body with a paintbrush. After the marking is completed, the cup body is placed in the automatic welding system, the connecting piece is fixed at the marked position by spot welding, and finally the handle is installed on the cup body. The above method has a high labor cost, low efficiency, and the manual positioning accuracy is affected by human operation, and it is difficult to achieve the automation accuracy of the machine. However, if an automatic device is used to position the handle position of the cup body, this method has high requirements for the automatic positioning accuracy, and the scheme is relatively cumbersome, and the cost is relatively increased. Summary of the Utility Model

[0003] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification and the title of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0004] In view of the above existing problems, the utility model is proposed.

[0005] Therefore, the technical problem solved by the utility model is: to propose a positioning fixture with low cost, simple scheme and accurate positioning.

[0006] To solve the above technical problems, the present utility model provides the following technical solution: A positioning fixture, comprising a positioning component, wherein the positioning component includes a fixed block, a threaded portion, a limiting portion and a main body; the fixed block is a T-shaped cylinder, including an upper cylinder and a lower cylinder arranged coaxially, the threaded portion is provided on the side surface of the upper cylinder, and the thread shape of the threaded portion is replicated to match the thread of the cup lid of the cup body; a plurality of the limiting portions protrude along the bottom side surface of the upper cylinder, the internal thread of the cup body is in threaded cooperation with the threaded portion, and the cup body can rotate and move downward until it abuts against the limiting portion for limiting; the main body is also coaxially arranged with the fixed block and is a hollow cylinder, and the radius of the upper cylinder is smaller than the inner radius of the main body.

[0007] Preferably, the positioning component further includes a support ring, a support portion, a guide post and a spring; the guide posts are arranged circumferentially at the bottom of the support ring, both ends of the spring abut against the bottom surface of the main body and the guide posts respectively, the support ring abuts against the limiting portion upward for limiting, and downward generates an elastic force for downward displacement by abutting against the spring through the guide posts, and the support portion is formed by extending upward along the surface of the support ring.

[0008] Preferably, the positioning component further includes a limiting block, a limiting notch and a limiting groove; the limiting notch is arranged on the support ring, the limiting groove is arranged on the side surface of the lower cylinder, the limiting block passes through the limiting notch and then is embedded in the limiting groove for fixing, and the support ring is located in the side gap between the fixed block and the main body and moves up and down along the limiting block but cannot rotate.

[0009] Preferably, the outer side wall of the support ring abuts against the inner side wall of the main body for limiting, and the inner side wall of the support ring abuts against the outer side wall of the lower cylinder for limiting.

[0010] Preferably, the bottom of the limiting portion abuts against the top surface of the support ring, and the top of the support portion is flush with the top of the fixed block.

[0011] Preferably, the top of the fixed block is not higher than the top opening of the main body.

[0012] Preferably, a column groove and a limiting column are arranged at the bottom of the lower cylinder, the column groove is an arc shape concentric with the main body, and the limiting column can be located in the column groove for limiting sliding.

[0013] Preferably, the bottom end of the limiting column is fixed to the main body, the top of the limiting column is not fixed to the lower cylinder, and the relative rotation between the lower cylinder and the main body is limited by the limiting column.

[0014] Advantages of the present utility model: First, by setting up the positioning component, marking and scribing on the cup body are achieved, integrating the production processes of positioning and marking into the automated production process of the thermos cup, greatly improving the production efficiency of the thermos cup. Second, the thread shape of the cup lid is directly replicated to simulate the screwing fit between the cup lid and the cup body, eliminating the positioning step of the marking machine on the cup body and only requiring the positioning of the marking machine in the spatial coordinates, greatly reducing the positioning requirements for the marking machine. The solution is simple, fast, and low-cost. The positioning is a replication and has high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0016] Figure 1 is a schematic structural diagram of the positioning component described in the present utility model;

[0017] Figure 2 is a schematic structural diagram of the fixing block in the positioning component described in the present utility model;

[0018] Figure 3 is an exploded structural diagram of the positioning component described in the present utility model;

[0019] Figure 4 is a schematic structural diagram of the cooperation relationship between the positioning component and the cup body described in the present utility model;

[0020] Figure 5 is a cross-sectional structural diagram of the horizontal section of the positioning fixture described in the present utility model;

[0021] Figure 6 is a cross-sectional structural diagram of the vertical section of the positioning fixture described in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific embodiments of the present utility model in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0024] Secondly, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures, or characteristics that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0025] The present utility model is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present utility model, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0026] At the same time, in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper, lower, inner, and outer" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first, second, or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] Unless otherwise clearly defined and limited in the present utility model, the terms "installation, connection, and coupling" should be understood in a broad sense. For example: it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection, an electrical connection, or a direct connection, and can also be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Embodiment 1

[0029] Referring to Figures 1-6 the schematic, which means the overall structure of the positioning fixture proposed in this embodiment. Currently, in the production process, when the thermos cup lid is tightened, there is a relative angle requirement between the position of the logo on the cup lid and the position of the handle on the cup body. And the position of the handle is determined by the connecting piece M on the cup body S, that is, the spot welding piece; the position of the connecting piece M is currently determined by manually screwing the cup lid and then making a mark on the cup body S with a paintbrush, and fixing the connecting piece M at the marked position by spot welding. Using this method, the labor cost is high and the efficiency is low.

[0030] Therefore, this embodiment proposes that the overall structure of the positioning fixture shown schematically can be used for subsequent processes such as positioning and marking the handle of the cup body after positioning. Specifically, the positioning component 100 includes a fixed block 101, a threaded portion 102, a limiting portion 103, and a main body 104. In this embodiment, the fixed block 101 is a T-shaped cylinder, including an upper cylinder 101a and a lower cylinder 101b arranged coaxially. The threaded portion 102 is arranged on the side surface of the upper cylinder 101a, and the thread shape of the threaded portion 102 replicates the cup lid thread that matches the cup body S. It should be noted that in this embodiment, in order to achieve accurate positioning, this positioning is actually the relative angle positioning between the position of the cup lid logo and the position of the cup body handle. When the cup lid and the cup body S are tightened, according to the required angle of the thermos cup, the position of the cup body handle is located by the position and angle of the cup lid logo. Therefore, in this embodiment, the thread shape of the threaded portion 102 replicates the cup lid thread that matches the cup body S to simulate the screwing fit between the cup lid and the cup body S. When the cup body S is tightened in place with the threaded portion 102, the positioning of the cup body S is completed. Then, when the cup body S is positioned, the marking component (laser marking machine) marks and scribes the cup body S according to the angle and position set by the program. It is not difficult to understand that the positioning required by the laser marking machine is not related to the cup body S itself, but the spatial positioning of the marking station, that is, it is required that the marking point is located at a certain coordinate in the space. The positioning of the cup body S itself has been automatically aligned with the spatial coordinates located by the laser marking machine through simulating the screwing fit between the cup lid and the cup body S. Therefore, the positioning difficulty of the laser marking machine can be greatly reduced, changing the original method of finding the marking position of the cup body S to only positioning the spatial coordinates, which is simple, effective, and accurate.

[0031] Furthermore, for the upper and lower limit of the cup body S, several limiting portions 103 are protrudingly arranged along the bottom side surface of the upper cylinder 101a. The internal thread of the cup body S cooperates with the threaded portion 102, so that the cup body S rotates and moves downward until it abuts against the limiting portion 103 for limiting, that is, the cup body S cannot continue to move downward. The main body 104 is also coaxially arranged with the fixed block 101 and is a hollow cylinder. The radius of the upper cylinder 101a is smaller than the inner radius of the main body 104. The side gap formed after the fixed block 101 is inserted into the main body 104 for limiting is used to accommodate the limiting portion 103. Generally speaking, the fixed block 101 moves up and down within the main body 104, and there is a gap between the two. This gap is used for the cup body S to be embedded on the fixed block 101 and is also the displacement gap of the cup body S.

[0032] Further, during the actual operation process, if the cup body S is inclined relative to the fixed block 101, there will be a certain error in the thread fit, which will affect the accuracy of positioning. Therefore, to increase the positioning accuracy of the cup body S, in this embodiment, the positioning assembly 100 further includes a support ring 105, a support portion 106, a guide post 107, and a spring 108. The guide posts 107 are arranged in a circular pattern at the bottom of the support ring 105. The two ends of the spring 108 are respectively in contact with the bottom surface of the main body 104 and the guide posts 107. The support ring 105 abuts against the limit portion 103 upward for limiting, and generates an elastic force for downward displacement by abutting against the spring 108 through the guide posts 107 downward. The support portion 106 extends upward along a part of the surface of the support ring 105. Since there is a gap between the main body 104 and the fixed block 101, to prevent shaking, the outer side walls of the support ring 105 are in contact with the inner side walls of the main body 104 for limiting, and the inner side walls of the support ring 105 are in contact with the outer side walls of the lower cylinder 101b for limiting. The limit portion 103 may not be in contact with the inner side wall of the main body 104, or may be in contact with the inner side wall of the main body 104, but the limit portion 103 needs to be in contact with the support portion 106 for limiting.

[0033] In this embodiment, to limit the rotation of the fixed block 101 and the support ring 105, the positioning assembly 100 further includes a limit block 110, a limit notch 111, and a limit groove 109. The limit notch 111 is provided on the support ring 105, the limit groove 109 is provided on the side surface of the lower cylinder 101b, and the limit block 110 is fixed in the limit groove 109 after passing through the limit notch 111. The support ring 105 is located in the side gap between the fixed block 101 and the main body 104 and can move up and down along the limit block 110 but cannot rotate. It should be noted that since the two ends of the spring 108 are respectively in contact with the bottom surface of the main body 104 and the guide posts 107, the fixed block 101 and the main body 104 cannot rotate due to the limitation of the spring 108 and the guide posts 107, but can move relatively up and down due to the elastic force. As a preferred solution of this embodiment, the bottom of the fixed block 101 is fixedly arranged with the main body 104, and the main body 104 is fixedly arranged with the turntable 101. Therefore, the fixed block 101 cannot rotate either.

[0034] However, as another optimized solution of this embodiment, the bottom of the fixing block 101 may not be fixedly arranged with the main body 104, so that a certain relative rotation can occur between the two and then be limited. Therefore, during the relative rotation stroke, the supporting portion 106 first contacts the cup body S. Under the action of the spring extrusion force, the cup body S rotates, but the fixing block 101 can also rotate a certain stroke, that is, the cup body S and the fixing block 101 first rotate synchronously for a certain distance. During this process, the supporting portion 106 can fully adjust the inclination posture of the cup body S relative to the fixing block 101, so as to achieve more accurate positioning. For this, this embodiment proposes to provide a column groove 101b-1 and a limiting column 101b-2 at the bottom of the lower column body 101b. The column groove 101b-1 is in an arc shape concentric with the main body 104, and the limiting column 101b-2 can be located in the column groove 101b-1 for limited sliding. It is not difficult to understand that the bottom end of the limiting column 101b-2 is fixed to the main body 104, the top of the limiting column 101b-2 is not fixed to the lower column body 101b, and the relative rotation between the lower column body 101b and the main body 104 is limited by the limiting column 101b-2. The positioning workflow of the positioning component 100 in this embodiment is as follows: First, the bottom edge of the cup body S abuts against the supporting portion 106;

[0035] The automated screwing device presses the cup body S downward along the supporting ring 105, and the spring 108 is squeezed, so that the cup body S and the threaded portion 102 are in the initial stage of cooperation;

[0036] S3: The screwing device rotates the cup body S. The cup body S moves downward through thread cooperation until it abuts against the limiting portion 103 and cannot move downward, completing the positioning of the cup body S. During the process of the cup body S rotating and moving downward, it may also include that the front section of the cup body S and the fixing block 101 rotate synchronously for a certain stroke, and the size of the stroke depends on the length of the column groove 101b-1.

[0037] This embodiment simulates the screwing cooperation between the cup lid and the cup body S, and finally completes the positioning of the cup body S. At the same time, the provided supporting portion 106 prevents the error caused by its inclination in the initial stage of the downward movement of the cup body S, and maintains the posture of the cup body S by means of elastic abutment, making the positioning more accurate.

[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. The embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] It should also be understood that the present utility model is described by way of embodiments. The embodiments are only clear and complete descriptions of the technical solutions proposed in the claims of the present utility model, that is, explanations of the claims. Therefore, when judging whether the technical solutions described in the specification of the present utility model are fully disclosed, the core meaning of the solutions defined by the claims should be fully considered. And there must be other technical problems in the specification that are irrelevant to the core technical problems solved by the present embodiment. The corresponding technical features and technical solutions do not belong to the meaning of the present embodiment and are non-essential technical features. Therefore, reference can be made to implicit disclosure, and those skilled in the art can fully implement them in combination with the prior art and common general knowledge. Therefore, there is no need to elaborate in any way.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered by the scope of the claims of the present utility model.

Claims

1. A positioning fixture, characterized in that: It includes a positioning component (100), and the positioning component (100) includes a fixed block (101), a threaded portion (102), a limiting portion (103), and a main body (104); The fixed block (101) is a T-shaped cylinder, including an upper cylinder (101a) and a lower cylinder (101b) arranged coaxially. The threaded portion (102) is arranged on the side surface of the upper cylinder (101a), and the thread shape of the threaded portion (102) replicates the cup lid thread matching the cup body (S); A plurality of the limiting portions (103) protrude along the bottom side surface of the upper cylinder (101a). The internal thread of the cup body (S) is in threaded cooperation with the threaded portion (102), and the cup body (S) can rotate and move downward until it abuts against and is limited by the limiting portion (103); The main body (104) is also coaxially arranged with the fixed block (101), and is a hollow cylinder. The radius of the upper cylinder (101a) is smaller than the inner radius of the main body (104).

2. The positioning fixture according to claim 1, characterized in that: The positioning component (100) further includes a support ring (105), a support portion (106), a guide post (107), and a spring (108); The guide posts (107) are arranged circumferentially at the bottom of the support ring (105). The two ends of the spring (108) respectively abut against the bottom surface of the main body (104) and the guide posts (107). The support ring (105) abuts against and is limited by the limiting portion (103) upward, and generates an elastic force for downward displacement by abutting against the spring (108) through the guide posts (107) downward. The support portion (106) is formed by extending upward along the surface of the support ring (105).

3. The positioning fixture according to claim 2, characterized in that: The positioning component (100) further includes a limit block (110), a limit notch (111), and a limit groove (109); The limit notch (111) is arranged on the support ring (105), the limit groove (109) is arranged on the side surface of the lower cylinder (101b), and the limit block (110) is fixed in the limit groove (109) after passing through the limit notch (111). The support ring (105) is located in the side gap between the fixed block (101) and the main body (104) and can move up and down but cannot rotate along the limit block (110).

4. The positioning fixture according to claim 2, wherein: The outer side wall of the support ring (105) abuts against and is limited by the inner side wall of the main body (104), and the inner side wall of the support ring (105) abuts against and is limited by the outer side wall of the lower cylinder (101b).

5. The positioning fixture according to claim 2, characterized in that: The bottom of the limiting portion (103) is arranged to abut against the top surface of the support ring (105), and the top of the support portion (106) is flush with the top of the fixed block (101).

6. The positioning fixture according to claim 1, characterized in that: The top of the fixed block (101) is not higher than the top opening of the main body (104).

7. The positioning fixture according to claim 1, characterized in that: A column groove (101b-1) and a limit column (101b-2) are provided at the bottom of the lower column body (101b). The column groove (101b-1) is in an arc shape concentric with the main body (104), and the limit column (101b-2) can be located in the column groove (101b-1) for limited sliding.

8. The positioning fixture according to claim 7, characterized in that: The bottom end of the limit column (101b-2) is fixed to the main body (104), the top of the limit column (101b-2) is not fixed to the lower column body (101b), and the relative rotation of the lower column body (101b) and the main body (104) is limited by the limit column (101b-2).

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