Positioning piece and positioning assembly for injection molding machine and injection molding machine

Abstract

The utility model relates to the technical field of injection molding, in particular to a positioning part and a positioning assembly for an injection molding machine and the injection molding machine. The positioning part for the injection molding machine and the injection molding machine comprise a fixed mold plate, the fixed mold plate is provided with a positioning hole, and the positioning part comprises a positioning body which is used for being installed in the positioning hole; the positioning body comprises a through hole and an opening communicating the through hole with the peripheral space of the positioning body, the opening is constructed to be convenient for the positioning ring to be assembled in the through hole, and according to the positioning piece for the injection molding machine, the mounting efficiency can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of injection molding technology, and in particular to a positioning member, a positioning assembly and an injection molding machine for an injection molding machine. Background Art

[0002] The mold is positioned by cooperating with the positioning holes on the injection molding machine through the positioning ring. The size of the positioning hole of the fixed plate on the injection molding machine is fixed, and the sizes of the positioning rings on different molds are inconsistent. Usually, it is necessary to install a positioning ring in the positioning hole to accommodate positioning rings of different sizes. However, the installation tolerance between the positioning rings is small, and the installation difficulty is high.

[0003] In the related art, the inner diameter of the upper portion of the positioning ring is often increased to increase the fault tolerance area, but the fault tolerance rate is still not high and the installation efficiency is low. Utility Model Content

[0004] The present disclosure aims to solve one of the technical problems in the related art to at least a certain extent. To this end, an embodiment of the present disclosure provides a positioning member for an injection molding machine, which can improve installation efficiency.

[0005] The disclosed embodiments also provide a positioning assembly and an injection molding machine.

[0006] The embodiment of the present disclosure is a positioning member for an injection molding machine, wherein the injection molding machine includes a fixed plate having a positioning hole, the positioning member includes a positioning body, the positioning body is used to be installed in the positioning hole, the positioning body includes a through hole and an opening connecting the through hole and the peripheral space of the positioning body, and the opening is configured to facilitate the assembly of the positioning ring in the through hole.

[0007] The positioning piece for an injection molding machine in the disclosed embodiment is provided with a through hole penetrating the positioning body along its axial direction and an opening connecting the through hole and the peripheral space of the positioning body, thereby increasing the fault tolerance area during the installation of the positioning ring, facilitating the installation of the positioning ring in the through hole, effectively improving the fault tolerance rate, reducing the mold installation time, and improving the mold installation efficiency.

[0008] In some embodiments, the cross section of the positioning body is fan-shaped, and the central angle of the fan-shaped body ranges from 180° to 240°.

[0009] In some embodiments, the positioning member for the injection molding machine further includes a guide portion, which is arranged at one end of the positioning body along the circumference of the positioning body, and the opening is formed between the guide portion and the other end of the positioning body; or, the guide portion is arranged at both ends of the positioning body along the circumference of the positioning body, and the opening is formed between the two guide portions.

[0010] In some embodiments, the cross section of the guide portion is fan-shaped, and the central angle of the fan is greater than 0° and less than 90°.

[0011] In some embodiments, the positioning body is provided with a plurality of connection holes distributed along the circumference of the positioning body, and the connection holes are configured to connect the positioning member and the fixed template by means of fasteners in cooperation with threaded holes of the fixed template.

[0012] In some embodiments, the connecting hole is a countersunk hole.

[0013] The positioning assembly of the embodiment of the present disclosure includes: a fixed template, which is provided with a positioning hole that penetrates the fixed template along the thickness direction of the fixed template; a positioning piece, which is a positioning piece described in any one of the above embodiments, and the positioning piece is fitted in the positioning hole, and the opening is set upward to facilitate the assembly of the positioning ring in the through hole.

[0014] The positioning assembly of the embodiment of the present disclosure is provided with a through hole on the positioning body that penetrates the positioning body along its axial direction and an opening that connects the through hole with the peripheral space of the positioning body, thereby increasing the fault tolerance area during the installation of the positioning ring, facilitating the installation of the positioning ring in the through hole, effectively improving the fault tolerance rate, reducing the mold installation time, and improving the mold installation efficiency.

[0015] In some embodiments, the fixed template is provided with a recessed portion arranged around the positioning hole, and one axial end of the positioning member abuts against the bottom surface of the recessed portion.

[0016] In some embodiments, a threaded hole is provided on the bottom surface of the recess, and the threaded hole is arranged opposite to the connecting hole. The positioning assembly also includes a fastener, and the fastener passes through the connecting hole and the threaded hole to connect the positioning member and the bottom surface of the recess; and / or, the end face of the other end of the positioning member in its axial direction is flush with the end face of the fixed template.

[0017] The injection molding machine of the embodiment of the present disclosure includes a positioning piece according to any one of the above embodiments or a positioning assembly according to any one of the above embodiments.

[0018] In the injection molding machine of the disclosed embodiment, a through hole is provided on the positioning body which penetrates the positioning body along its axial direction and an opening which connects the through hole with the peripheral space of the positioning body, thereby increasing the fault tolerance area during the installation of the positioning ring, facilitating the installation of the positioning ring in the through hole, effectively improving the fault tolerance rate, reducing the mold installation time, and improving the mold installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of a positioning member for an injection molding machine according to an embodiment of the present disclosure.

[0020] Figure 2 yes Figure 1 Cross-sectional view of CC.

[0021] Figure 3 Schematic diagram of a fixed template according to an embodiment of the present disclosure.

[0022] Figure 4 yes Figure 3 Cross-sectional view of DD.

[0023] Figure 5 is a schematic diagram of a positioning component according to an embodiment of the present disclosure.

[0024] Figure 6 yes Figure 5 Cross-sectional view of EE.

[0025] Figure 7 yes Figure 6 Enlarged schematic diagram of point F in the middle.

[0026] Reference numerals:

[0027] Fixed template 100, positioning hole 110, recess 120, bottom surface of recess 1210, threaded hole 12110,

[0028] Positioning member 200,

[0029] Positioning body 1, through hole 11, opening 12, connecting hole 13,

[0030] Guide part 2. DETAILED DESCRIPTION

[0031] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0032] The positioning member 200 for an injection molding machine according to an embodiment of the present disclosure comprises a fixed plate 100 having a positioning hole 110, and the positioning member 200 comprises a positioning body 1 for being installed in the positioning hole 110. The positioning body 1 comprises a through hole 11 and an opening 12 connecting the through hole 11 with the peripheral space of the positioning body 1, and the opening 12 is configured to facilitate the assembly of the positioning ring in the through hole 11.

[0033] Specifically, if Figure 1-Figure 7 As shown, the through hole 11 passes through the positioning body 1 in the front-to-back direction, the front-to-back direction is consistent with the axial direction of the positioning body 1, and the through hole 11 is concentrically arranged with the positioning body 1. The positioning body 1 is installed in the positioning hole 110, and the outer peripheral surface of the positioning body 1 abuts the inner peripheral surface of the positioning hole 110, so that the through hole 11 of the positioning body 1 is concentrically arranged with the positioning hole 110.

[0034] When the positioning body 1 is installed in the positioning hole 110, the opening 12 is located above the through hole 11. Since the opening 12 connects the through hole 11 and the peripheral space of the positioning body 1, that is, the opening 12 passes through the positioning body 1 along the radial direction of the positioning body 1 from the upper inner wall surface of the through hole 11, the setting of the opening 12 increases the tolerance area during the installation of the positioning ring, making it easier for the positioning ring to fit in the through hole 11.

[0035] When the positioning ring is installed in the through hole 11, since the through hole 11 is concentric with the positioning hole 110, the positioning member 200 can locate the installation position of the positioning ring of the mold. The outer peripheral surface of the positioning ring abuts against the inner peripheral surface of the positioning body 1, so that the positioning ring is concentric with the through hole 11, thereby realizing the positioning installation of the positioning ring, ensuring that the glue inlet of the mold is concentric with the nozzle of the injection molding machine, and facilitating the nozzle to accurately inject glue into the glue inlet.

[0036] The positioning piece 200 for an injection molding machine of the disclosed embodiment is provided with a through hole 11 penetrating the positioning body 1 along its axial direction and an opening 12 connecting the through hole 11 with the peripheral space of the positioning body 1, thereby increasing the fault tolerance area during the installation of the positioning ring, facilitating the installation of the positioning ring in the through hole 11, effectively improving the fault tolerance rate, reducing the mold installation time, and improving the mold installation efficiency.

[0037] Furthermore, in this embodiment, by setting the aperture of the through hole 11 of the positioning body 1 to different sizes, it can adapt to the outer diameters of different positioning rings on different molds, making it easier for the injection molding machine to adapt to different molds.

[0038] In some embodiments, the cross section of the positioning body 1 is in the shape of a sector ring, and the central angle of the sector ring ranges from 180° to 240°.

[0039] Specifically, if Figure 1 As shown, the cross section of the positioning body 1 refers to the projection of the positioning body 1 on the projection plane orthogonal to the axial direction of the positioning body 1. By limiting the central angle A of the fan ring, it is avoided that the central angle of the fan ring is too small, affecting the positioning effect of the positioning body 1 on the positioning ring. At the same time, it is avoided that the central angle of the fan ring is too large, the fault tolerance area of ​​the positioning ring is too small, and the installation difficulty of the positioning ring is increased.

[0040] Optionally, the central angle A of the fan ring is 180°, which ensures that the positioning body 1 is installed stably while maximizing the tolerance area of ​​the positioning ring during the installation process, so that the positioning ring can enter the through hole 11 from top to bottom from the opening 12, making installation convenient.

[0041] Of course, in other embodiments, the central angle of the fan ring may also take other values ​​outside the above range.

[0042] Compared with the setting in the related art in which the positioning part 200 is a circular ring, the position of the positioning ring of the mold in the up, down, left and right directions needs to correspond to the circular ring at the same time before it can be installed in the circular ring positioning part 200. In this embodiment, the positioning body 1 is set to a fan ring shape to increase the fault tolerance area during the mold installation process. The positioning ring can enter the through hole 11 from top to bottom at the opening 12 above the through hole 11 and then perform fine-tuning, ensuring the positioning support effect of the positioning body 1 while reserving a larger fault tolerance area, thereby improving the fault tolerance rate during the mold installation process and reducing the installation time of the mold.

[0043] Furthermore, since the positioning body 1 is installed vertically in the positioning hole 110, the fan-shaped positioning body 1 can achieve self-adjustment under the action of its own gravity, so that the positioning body 1 is located at the lower part of the positioning hole 110, which is convenient for positioning the installation position of the positioning member 200.

[0044] In some embodiments, the positioning member 200 for an injection molding machine further includes a guide portion 2 , which is arranged at one end of the positioning body 1 along the circumference of the positioning body 1 , and an opening 12 is formed between the guide portion 2 and the other end of the positioning body 1 .

[0045] Specifically, if Figure 1 and Figure 5 As shown, when there is only one guide part 2, the guide part 2 can be arranged on the left side of the opening 12, the lower end of the guide part 2 is connected to the positioning body 1, the upper end of the guide part 2 extends from right to left and is arranged upwardly tilted, and an opening 12 is formed between the guide part 2 and the right end of the positioning body 1; or, the guide part 2 can be arranged on the right side of the opening 12, the lower end of the guide part 2 is connected to the positioning body 1, the upper end of the guide part 2 extends from left to right and is arranged upwardly tilted, and an opening 12 is formed between the guide part 2 and the left end of the positioning body 1.

[0046] In some embodiments, the guide portions 2 are arranged at both ends of the positioning body 1 along the circumference of the positioning body 1 , and an opening 12 is formed between the two guide portions 2 .

[0047] Specifically, if Figure 1 and Figure 5 As shown, when there are two guide parts 2, the two guide parts 2 are arranged relative to each other in the left and right directions, the lower end of the guide part 2 on the left is connected to the left end surface of the positioning body 1, the upper end of the guide part 2 on the left extends from right to left and is arranged upwardly tilted, the lower end of the guide part 2 on the right is connected to the right end surface of the positioning body 1, the upper end of the guide part 2 on the right extends from left to right and is arranged upwardly tilted, and an opening 12 is formed between the guide part 2 on the left and the guide part 2 on the right.

[0048] The present invention provides a guide portion 2 on at least one end of the circumferential direction of the positioning body 1. The guide portion 2 guides the positioning ring during the installation process, so that the positioning ring can enter the through hole 11 more quickly along the end face of the guide portion 2, further shortening the installation time.

[0049] Optionally, the guide portion 2 and the positioning body 1 are integrally formed to ensure a stable connection between the guide portion 2 and the positioning body 1 and improve the structural strength of the positioning member 200. Alternatively, the guide portion 2 and the positioning body 1 are separated to facilitate replacement of the guide portion 2 and ensure the guiding effect of the guide portion 2.

[0050] In some embodiments, the cross section of the guide portion 2 is fan-shaped, and the central angle of the fan is greater than 0° and less than 90°.

[0051] Specifically, if Figure 1 As shown, the cross-section of the guide portion 2 refers to the projection of the guide portion 2 on a projection plane orthogonal to the axial direction of the positioning body 1. The smaller the central angle B of the sector, the larger the range of the opening 12, the larger the fault tolerance area, and the higher the fault tolerance rate. Conversely, the larger the central angle B of the sector, the smaller the range of the opening 12, the smaller the fault tolerance area, and the lower the fault tolerance rate. By limiting the central angle of the guide portion 2, it is possible to avoid the central angle of the guide portion 2 being too small, thereby failing to achieve the guiding effect, and to avoid the central angle of the guide portion 2 being too large, thereby increasing the occupied area, reducing the fault tolerance area, and affecting the installation efficiency of the positioning ring.

[0052] Optionally, B is 60°.

[0053] In some embodiments, the positioning body 1 is provided with a plurality of connection holes 13 distributed along the circumference of the positioning body 1 , and the connection holes 13 are configured to connect the positioning member 200 and the fixed template 100 by means of fasteners in cooperation with the threaded holes 12110 of the fixed template 100 .

[0054] Specifically, if Figure 1 and Figure 2 As shown, the connection holes 13 and the through holes 11 are spaced apart in the radial direction of the positioning body 1 . The arrangement of the connection holes 13 facilitates the connection between the positioning body 1 and the fixed template 100 .

[0055] For example, the number of the connecting holes 13 is three, four, five or six.

[0056] In some embodiments, the connecting hole 13 is a countersunk hole.

[0057] Specifically, if Figure 2As shown, the fastener passes through the connecting hole 13 and is connected to the threaded hole 12110 on the fixed plate 100, thereby connecting the positioning body 1 to the fixed plate 100. By setting the connecting hole 13 as a countersunk hole, the head of the fastener can be sunk into the connecting hole 13, avoiding the fastener protruding from the end surface of the positioning body 1 and affecting the installation of the mold.

[0058] For example, the fastener is a screw.

[0059] The positioning assembly of the embodiment of the present disclosure includes a fixed template 100 and a positioning member 200. The fixed template 100 is provided with a thickness direction (such as Figure 4 The front-to-back direction shown in FIG. 1 is a front-to-back direction of the fixed template 100, and the positioning member 200 is the positioning member 200 of the above embodiment. The positioning member 200 is fitted in the positioning hole 110, and the opening 12 is set upward to facilitate the assembly of the positioning ring in the through hole 11.

[0060] Specifically, if Figure 3-Figure 7 As shown, a positioning hole 110 is provided on the fixed template 100, and the positioning member 200 is fitted in the positioning hole 110 with the opening 12 facing upward, the outer peripheral surface of the positioning member 200 abuts against the inner peripheral surface of the positioning hole 110, and the positioning ring is fitted in the through hole 11, and the outer peripheral surface of the positioning ring abuts against the inner peripheral surface of the positioning member 200. The positioning member 200 is provided to make the positioning ring concentric with the positioning hole 110, thereby realizing the positioning installation of the positioning ring, ensuring that the glue inlet of the mold is concentric with the nozzle of the injection molding machine, and facilitating the nozzle to accurately feed glue into the glue inlet.

[0061] In the positioning assembly of the disclosed embodiment, the positioning body 1 is provided with a through hole 11 which penetrates the positioning body 1 along its axial direction and an opening 12 which connects the through hole 11 with the peripheral space of the positioning body 1, thereby increasing the fault tolerance area during the installation of the positioning ring, facilitating the installation of the positioning ring in the through hole 11, effectively improving the fault tolerance rate, reducing the mold installation time, and improving the mold installation efficiency.

[0062] In some embodiments, the fixed template 100 is provided with a recess 120 arranged around the positioning hole 110 , and one axial end of the positioning member 200 abuts against a bottom surface 1210 of the recess.

[0063] Specifically, if Figure 4 and Figure 7 As shown, the recess 120 opens forward 12, and the recess 120 is set to reserve installation space for the positioning member 200, so as to facilitate embedding the positioning member 200 into the recess 120. By abutting the rear end of the positioning member 200 against the bottom surface 1210 of the recess, the outer peripheral surface of the positioning member 200 abuts against the inner peripheral surface of the recess 120, thereby realizing the positioning installation of the positioning member 200.

[0064] In some embodiments, the bottom surface 1210 of the recess is provided with a threaded hole 12110, which is arranged opposite to the connecting hole 13. The positioning assembly also includes a fastener, which passes through the connecting hole 13 and the threaded hole 12110 to connect the positioning member 200 and the bottom surface 1210 of the recess.

[0065] Specifically, if Figure 4 and Figure 7 As shown, by arranging a threaded hole 12110 on the bottom surface 1210 of the recess and arranged opposite to the connecting hole 13, the fastener can pass through the connecting hole 13 and the threaded hole 12110 in sequence, thereby realizing the threaded connection between the positioning member 200 and the bottom surface 1210 of the recess, and further realizing the threaded connection between the positioning member 200 and the fixed template 100.

[0066] Furthermore, the threaded connection is a detachable connection, that is, the positioning member 200 and the fixed mold plate 100 are detachably connected, which facilitates the replacement of positioning members 200 with different inner diameters to adapt to positioning rings of different molds.

[0067] In some embodiments, an end surface of the other end of the positioning member 200 in the axial direction is flush with an end surface of the fixed mold plate 100 .

[0068] Specifically, if Figure 5-Figure 7 As shown, the front end surface of the positioning member 200 is flush with the front end surface of the fixed mold plate 100, ensuring that the positioning member 200 is embedded in the recess 120 to avoid affecting the installation of the mold.

[0069] The injection molding machine according to the embodiment of the present disclosure includes a positioning member 200 according to any one of the above embodiments or a positioning assembly according to any one of the above embodiments.

[0070] In the injection molding machine of the disclosed embodiment, the positioning body 1 is provided with a through hole 11 which penetrates the positioning body 1 along its axial direction and an opening 12 which connects the through hole 11 with the peripheral space of the positioning body 1, thereby increasing the fault tolerance area during the installation of the positioning ring, facilitating the installation of the positioning ring in the through hole 11, effectively improving the fault tolerance rate, reducing the mold installation time, and improving the mold installation efficiency.

[0071] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0073] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0074] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0075] In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0076] It is understandable that the above embodiments are exemplary and are not to be construed as limiting the present disclosure. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present disclosure.

Claims

1. A positioning member (200) for an injection molding machine, characterized in that: The injection molding machine includes a fixed plate (100), the fixed plate (100) has a positioning hole (110), the positioning member (200) includes a positioning body (1), the positioning body (1) is used to be installed in the positioning hole (110), the positioning body (1) includes a through hole (11) and an opening (12) connecting the through hole (11) and the peripheral space of the positioning body (1), and the opening (12) is configured to facilitate the assembly of a positioning ring in the through hole (11).

2. The positioning member (200) for an injection molding machine according to claim 1, characterized in that: The cross section of the positioning body (1) is in the shape of a sector ring, and the central angle of the sector ring ranges from 180° to 240°.

3. The positioning member (200) for an injection molding machine according to claim 1, characterized in that: It also includes a guide portion (2), The guide portion (2) is arranged at one end of the positioning body (1) along the circumference of the positioning body (1), and the opening (12) is formed between the guide portion (2) and the other end of the positioning body (1); or, The guide portions (2) are arranged at both ends of the positioning body (1) along the circumference of the positioning body (1), and the opening (12) is formed between the two guide portions (2).

4. The positioning member (200) for an injection molding machine according to claim 3, characterized in that: The cross section of the guide portion (2) is fan-shaped, and the central angle of the fan is greater than 0° and less than 90°.

5. The positioning member (200) for an injection molding machine according to any one of claims 1 to 4, characterized in that: The positioning body (1) is provided with a plurality of connection holes (13) distributed along the circumference of the positioning body (1), and the connection holes (13) are configured to connect the positioning member (200) and the fixed template (100) by means of fasteners in cooperation with the threaded holes (12110) of the fixed template (100).

6. The positioning member (200) for an injection molding machine according to claim 5, characterized in that: The connecting hole (13) is a countersunk hole.

7. A positioning component, characterized in that: include: A fixed template (100), wherein the fixed template (100) is provided with a positioning hole (110) penetrating the fixed template (100) along a thickness direction of the fixed template (100); A positioning member (200), wherein the positioning member (200) is the positioning member (200) as described in any one of claims 1 to 6, wherein the positioning member (200) is fitted in the positioning hole (110), and the opening (12) is arranged upward to facilitate the assembly of the positioning ring in the through hole (11).

8. The positioning assembly according to claim 7, characterized in that The fixed template (100) is provided with a recess (120) arranged around the positioning hole (110), and one axial end of the positioning member (200) abuts against the bottom surface (1210) of the recess.

9. The positioning assembly according to claim 8, characterized in that The bottom surface (1210) of the recess is provided with a threaded hole (12110), the threaded hole (12110) is arranged opposite to the connecting hole (13), the positioning assembly further comprises a fastener, the fastener passes through the connecting hole (13) and the threaded hole (12110) to connect the positioning member (200) and the bottom surface (1210) of the recess; and / or, The end surface of the other end of the positioning member (200) in the axial direction is flush with the end surface of the fixed template (100).

10. An injection molding machine, characterized in that: The method comprises a positioning member (200) according to any one of claims 1 to 6 or a positioning assembly according to any one of claims 7 to 9.

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