Magnetic type frame
Through the design of magnetic-sucking frames, the size of the vacant area is adjusted by using the stop structure and magnetic suction parts, the problems of inconvenient transportation and storage and high cost of forming frames are solved, and a variety of test needs are met.
Patent Information
- Application Number
- CN202422282724.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-19
AI Technical Summary
In the prior art, the preparation of molded frames of different sizes is not only inconvenient for transportation and storage, but also has high production costs and cannot meet the needs of sagging tests of mortar thick batches of different thicknesses.
Using a magnetic suction frame, by setting a first stop structure and a second stop structure, combining a magnetic suction piece and an adjustable sliding groove, the dimension adjustment of the vacant area is achieved to meet different test needs.
It realizes arbitrary adjustment of the vacant areas in the magnetic-sucking frame, saves production costs and storage space, and meets various testing needs.
Smart Images

Figure CN223075112U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mortar thick-batching process design, in particular to a magnetic type frame. Background Art
[0002] During the construction of interior and exterior wall mortars and tile adhesives, construction workers often adopt the construction process of thick batching or thick pasting, resulting in the construction thickness of the mortar being more than 5 mm, usually exceeding the designed thickness of product use, and finally causing the phenomenon of mortar layer sag, directly reducing the strength of the mortar layer, making it uneven or causing the tile adhesive layer to be hollow.
[0003] In the related art, for the thick-batch sag test of mortar products, a forming frame is used to prepare samples with different thicknesses for the thick-batch sag test of mortars with different thicknesses. However, due to the large variety of coating categories and many implemented standards, for different performance tests, samples of different sizes need to be made. Therefore, forming frames of different sizes are required. Preparing forming frames of different sizes is not only inconvenient for transportation and storage, occupies a large space, but also requires separate production, resulting in high production costs.
[0004] Therefore, there is an urgent need to invent a magnetic type frame to solve the above problems. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a magnetic type frame to realize arbitrary adjustment of the size of the vacant area in the magnetic type frame and meet different test requirements.
[0006] To achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The magnetic type frame includes:
[0008] Magnetic components;
[0009] Two first stop structures oppositely arranged along a first direction, the first stop structures extend along a second direction, and first sliding grooves are arranged on the end faces of the two first stop structures oppositely arranged, and the first sliding grooves extend along the second direction; and
[0010] Two second stop structures oppositely arranged along the second direction, located between the two first stop structures, the second stop structures extend along the first direction, and at least one of the magnetic components is arranged on the same-side end faces of the first stop structures and the second stop structures along a third direction;
[0011] Both ends of the second stop structure along the first direction are respectively in sliding fit with the first sliding grooves, the length of the second stop structure along the first direction is adjustable, and the first direction, the second direction and the third direction are perpendicular to each other in pairs.
[0012] As an alternative, the second stop structure includes at least one first docking member and a second docking member that are detachably connected, the magnetic member is disposed on the first docking member and / or the second docking member, and the two ends of the first docking member along the first direction are respectively provided with a first docking protrusion and a first docking groove, and the two ends of the second docking member along the first direction are respectively provided with a second docking protrusion and a third docking protrusion;
[0013] The first docking protrusion can be slidably mated with the first sliding groove or be docked and fixed with the first docking groove in another first docking member, the second docking protrusion can be slidably mated with the first sliding groove, and the third docking protrusion can be docked and fixed with the first docking groove.
[0014] As an alternative, the first docking protrusion includes:
[0015] A first protrusion portion, connected to the first docking member, and the first protrusion portion extends along the first direction;
[0016] A second protrusion portion, connected to one end of the first protrusion portion away from the first docking member along the first direction, the second protrusion portion extends along the first direction, the first sliding groove includes a first sliding portion and a second sliding portion that are in communication, the first protrusion portion is slidably mated with the first sliding portion, and the second protrusion portion is slidably mated with the second sliding portion.
[0017] As an alternative, the dimension of the second protrusion portion along the second direction is greater than the dimension of the first protrusion portion along the second direction.
[0018] As an alternative, the first docking protrusion, the second docking protrusion, and the third docking protrusion have the same size, and the first sliding groove and the first docking groove have the same size.
[0019] As an alternative, the magnetic type frame further includes:
[0020] A measuring scale, disposed at one end of the first stop structure away from the magnetic member, and the measuring scale extends along the second direction.
[0021] As an alternative, a measuring scale is correspondingly provided for each first stop structure.
[0022] As an alternative, both the first stop structure and the second stop structure are hollow structures.
[0023] As an alternative, the length of the magnetic member along the third direction is 2 - 3 mm.
[0024] As an alternative, the dimensions of the first stop structure and the second stop structure in the third direction are 5 - 6 mm.
[0025] Advantages of the present utility model:
[0026] The magnetic adsorption type frame provided by the present utility model, by providing two first stop structures arranged opposite to each other in the first direction and extending in the second direction, arranging a first sliding groove extending in the second direction on the end faces of the two first stop structures arranged opposite to each other, arranging two second stop structures arranged opposite to each other in the second direction between the two first stop structures, so that the first stop structure and the second stop structure enclose a vacant area, which is convenient for the subsequent preparation of the sample. By arranging at least one magnetic adsorption member on the same-side end faces of the first stop structure and the second stop structure in the third direction, the stacking of the first stop structure and the second stop structure in the third direction can be realized to change the thickness of the sample; by making the two ends of the second stop structure in the first direction respectively slide and cooperate with the first sliding groove, the dimension in the second direction in the vacant area enclosed by the first stop structure and the second stop structure can be adjusted. By adjusting the length of the second stop structure in the first direction, the dimension in the second direction in the vacant area enclosed by the first stop structure and the second stop structure can be adjusted, and then the dimension of the vacant area in the magnetic adsorption type frame can be arbitrarily adjusted to meet any test requirements, without the need to additionally process magnetic adsorption type frames of different sizes, saving production costs and storage space. Description of the Drawings
[0027] Figure 1 is a schematic structural diagram of the magnetic adsorption type frame provided by an embodiment of the present utility model;
[0028] Figure 2 is a side view of the first stop structure provided by an embodiment of the present utility model;
[0029] Figure 3 is a schematic structural diagram of the second stop structure provided by an embodiment of the present utility model;
[0030] Figure 4 is a schematic structural diagram of the first docking member provided by an embodiment of the present utility model;
[0031] Figure 5 is a schematic structural diagram of the second docking member provided by an embodiment of the present utility model.
[0032] In the figure:
[0033] 1000, magnetic adsorption type frame;
[0034] 100, first stop structure; 110, first sliding groove; 111, first sliding part; 112, second sliding part;
[0035] 200. Second stop structure; 210. First docking member; 211. First docking protrusion; 2111. First protrusion portion; 2112. Second protrusion portion; 212. First docking groove; 2121. First docking portion; 2122. Second docking portion; 220. Second docking member; 221. Second docking protrusion; 2211. Third protrusion portion; 2212. Fourth protrusion portion; 222. Third docking protrusion; 2221. Fifth protrusion portion; 2222. Sixth protrusion portion;
[0036] 300. Measuring scale. Detailed implementation manner
[0037] In order to make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the drawings and through specific implementation manners.
[0038] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between 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 situations.
[0039] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.
[0040] In the description of this embodiment, the orientation or positional relationship such as "above", "below", "left", and "right" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplifying the operation, 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" and "second" are only used for distinction in description and have no special meanings.
[0041] For the thick-batch sagging property test of mortar products, a forming frame is used to prepare specimens with different thicknesses for the thick-batch sagging property test of mortar with different thicknesses. However, due to the large variety of coating categories and the numerous standards to be implemented, different-sized specimens need to be made for corresponding different performance tests. Therefore, a large number of forming frames with different sizes are required. Preparing forming frames with different sizes is not only inconvenient for transportation and storage, takes up a large amount of space, but also needs to be produced separately, resulting in high production costs.
[0042] To solve the above problems, as Figure 1 shown, this embodiment provides a magnetic adsorption type frame 1000. The magnetic adsorption type frame 1000 includes a magnetic adsorption member (not shown in the figure), two first stop structures 100 oppositely arranged along a first direction, and two second stop structures 200 oppositely arranged along a second direction. Among them, the first stop structure 100 extends along the second direction, and first sliding grooves 110 are provided on the end faces of the two first stop structures 100 oppositely arranged, and the first sliding grooves 110 extend along the second direction. The two second stop structures 200 oppositely arranged along the second direction are located between the two first stop structures 100. The second stop structure 200 extends along the first direction. At least one magnetic adsorption member is provided on the same-side end faces of the first stop structure 100 and the second stop structure 200 along a third direction. The two ends of the second stop structure 200 along the first direction are respectively in sliding fit with the first sliding grooves 110, and the length of the second stop structure 200 along the first direction is adjustable. The first direction, the second direction, and the third direction are perpendicular to each other in pairs.
[0043] The magnetic adsorption type frame 1000 is provided with two first stop structures 100 which are arranged opposite to each other in the first direction and extend in the second direction. A first sliding groove 110 extending in the second direction is arranged on the end faces of the two first stop structures 100 where they are oppositely arranged. Two second stop structures 200 which are arranged opposite to each other in the second direction are arranged between the two first stop structures 100, so that the first stop structures 100 and the second stop structures 200 enclose a vacant area for facilitating the subsequent preparation of the sample. By arranging at least one magnetic adsorption member on the same-side end faces of the first stop structures 100 and the second stop structures 200 along the third direction, the stacking of the first stop structures 100 and the second stop structures 200 along the third direction can be realized to change the thickness of the sample. By enabling the two ends of the second stop structure 200 in the first direction to be respectively in sliding fit with the first sliding groove 110, the dimension in the second direction in the vacant area enclosed by the first stop structures 100 and the second stop structures 200 can be adjusted. By adjusting the length of the second stop structure 200 in the first direction, the dimension in the second direction in the vacant area enclosed by the first stop structures 100 and the second stop structures 200 can be adjusted, and further the dimension of the vacant area in the magnetic adsorption type frame 1000 can be arbitrarily adjusted to meet any test requirements without additionally processing magnetic adsorption type frames 1000 with different dimensions, saving production costs and storage space.
[0044] It should be noted that in this embodiment, the first direction is the front-back direction, the second direction is the left-right direction, and the third direction is the up-down direction. In other embodiments, the specific directions of the first direction, the second direction, and the third direction can also be adjusted according to actual needs, as long as the first direction, the second direction, and the third direction are perpendicular to each other pairwise, and this embodiment does not make specific limitations.
[0045] In addition, in this embodiment, two magnetic members are arranged on the first stop structure 100, and two magnetic members are arranged on the second stop structure 200. In other embodiments, the specific number of the magnetic members can also be adjusted according to actual needs, and this embodiment does not make specific limitations.
[0046] As an optional solution, both the first stop structure 100 and the second stop structure 200 are hollow structures. By arranging the first stop structure 100 and the second stop structure 200 as hollow structures, the weights of the first stop structure 100 and the second stop structure 200 can be effectively reduced, which is not only convenient for handling but also can reduce production costs.
[0047] Such as Figures 2 to 5As shown, the second stop structure 200 includes at least one first docking member 210 and a second docking member 220 that are detachably connected. The magnetic member is disposed on the first docking member 210 and / or the second docking member 220. At both ends of the first docking member 210 along the first direction, a first docking protrusion 211 and a first docking groove 212 are respectively provided. At both ends of the second docking member 220 along the first direction, a second docking protrusion 221 and a third docking protrusion 222 are respectively provided. The first docking protrusion 211 can be slidably engaged with the first sliding groove 110 or docked and fixed with the first docking groove 212 in another first docking member 210. The second docking protrusion 221 can be slidably engaged with the first sliding groove 110, and the third docking protrusion 222 can be docked and fixed with the first docking groove 212.
[0048] By splitting the second stop structure 200 into at least one first docking member 210 and a second docking member 220 that are detachably connected, a first docking protrusion 211 and a first docking groove 212 are respectively provided at both ends of each first docking member 210 along the first direction; a second docking protrusion 221 and a third docking protrusion 222 are respectively provided at both ends of the second docking member 220 along the first direction, so that the first docking protrusion 211 can be slidably engaged with the first sliding groove 110 or docked and fixed with the first docking groove 212 in another first docking member 210, and the second docking protrusion 221 is slidably engaged with the first sliding groove 110, and the third docking protrusion 222 is docked and fixed with the first docking groove 212, the effect that the combined first docking member 210 and the second docking member 220 slide along the first sliding grooves 110 on the two first stop structures 100 respectively can be achieved, so as to adjust the dimension in the second direction in the vacant area surrounded by the first stop structure 100 and the second stop structure 200. By disassembling and assembling the first docking member 210 on the second stop structure 200, the dimension of the vacant area surrounded by the first stop structure 100 and the second stop structure 200 in the first direction can be adjusted.
[0049] Specifically, as Figures 2 to 4As shown, the first docking protrusion 211 includes a first protrusion portion 2111 and a second protrusion portion 2112. Among them, the first protrusion portion 2111 is connected to the first docking member 210, the first protrusion portion 2111 extends along the first direction, the second protrusion portion 2112 is connected to one end of the first protrusion portion 2111 away from the first docking member 210 along the first direction, the second protrusion portion 2112 extends along the first direction, the first sliding groove 110 includes a first sliding portion 111 and a second sliding portion 112 that are in communication, the first protrusion portion 2111 is slidably engaged with the first sliding portion 111, and the second protrusion portion 2112 is slidably engaged with the second sliding portion 112. By setting the first docking protrusion 211 as the mutually connected first protrusion portion 2111 and second protrusion portion 2112, and setting the first sliding groove 110 as the first sliding portion 111 and the second sliding portion 112 that are in communication, and slidably mating the first sliding portion 111 with the first protrusion portion 2111, the sliding accuracy of the first docking protrusion 211 along the first sliding groove 110 is further improved.
[0050] In addition, the dimension of the second protrusion portion 2112 along the second direction is greater than the dimension of the first protrusion portion 2111 along the second direction. By ensuring that the dimension of the second protrusion portion 2112 along the second direction is greater than the dimension of the first protrusion portion 2111, the first protrusion portion 2111 and the second protrusion portion 2112 jointly form a T-shaped structure. The first protrusion portion 2111 is the vertical portion of the T-shaped structure, and the second protrusion portion 2112 is the horizontal portion of the T-shaped structure, so that a mortise and tenon structure is formed between the first docking protrusion 211 and the first sliding groove 110. While ensuring the sliding of the first docking protrusion 211 along the first sliding groove 110, the connection stability between the first docking protrusion 211 and the first sliding groove 110 is ensured.
[0051] In this embodiment, the first docking protrusion 211, the second docking protrusion 221, and the third docking protrusion 222 have the same dimensions, and the first sliding groove 110 and the first docking groove 212 have the same dimensions. By ensuring that the first docking protrusion 211, the second docking protrusion 221, and the third docking protrusion 222 have the same dimensions, and ensuring that the first sliding groove 110 and the first docking groove 212 have the same dimensions, not only can the mortise and tenon connection between the first docking member 210 and the first docking member 210, the mortise and tenon connection between the first docking member 210 and the second docking member 220, and the mortise and tenon connection between the second docking member 220 and the first sliding groove 110 be realized, but also it is convenient to increase or decrease the number of first docking members 210 in the second stop structure 200, improving the disassembly and assembly convenience. It should be noted that the second docking protrusion 221 includes a connected third protrusion portion 2211 and a fourth protrusion portion 2212, the third docking protrusion 222 includes a connected fifth protrusion portion 2221 and a sixth protrusion portion 2222, and the first docking groove 212 includes a first docking portion 2121 and a second docking portion 2122 that are in communication.
[0052] To further facilitate the determination of the dimension in the second direction within the vacant area enclosed by the first stop structure 100 and the second stop structure 200, as Figure 1 shown, the magnetic adsorption type frame 1000 further includes a measuring ruler 300. Among them, the measuring ruler 300 is arranged at one end of the first stop structure 100 away from the magnetic adsorption member, and the measuring ruler 300 extends in the second direction. When the second stop structure 200 slides along the first sliding groove 110, the dimension in the second direction within the vacant area enclosed by the first stop structure 100 and the second stop structure 200 can be determined according to the scale of the measuring ruler 300, effectively improving the dimension adjustment efficiency.
[0053] In addition, a measuring ruler 300 is correspondingly arranged for each first stop structure 100, so that the moving distances at both ends of the second stop structure 200 along the first direction are equal, and the adjusted second stop structure 200 extends along the first direction.
[0054] As an optional solution, the dimensions of the first docking member 210 and the second docking member 220 along the first direction are both 10 mm, so as to facilitate the adjustment of the dimension in the first direction within the vacant area enclosed by the first stop structure 100 and the second stop structure 200. In other embodiments, the dimensions of the first docking member 210 and the second docking member 220 along the first direction can also be adjusted according to actual needs, and this embodiment does not make specific limitations.
[0055] In an optional embodiment, the length of the magnetic adsorption member along the third direction is 2 - 3 mm. It should be noted that in this embodiment, the magnetic adsorption member is a magnet, and the length of the magnetic adsorption member along the third direction is 2 mm. In other embodiments, the length of the magnetic member along the third direction can also be arbitrarily adjusted within the range of 2 - 3 mm according to actual needs, and this embodiment does not make specific limitations.
[0056] Optionally, the dimensions of the first stop structure 100 and the second stop structure 200 along the third direction are 5 - 6 mm. It should be noted that in this embodiment, the thickness of the first stop structure 100 and the second stop structure 200 along the third direction is 5. In other embodiments, the dimensions of the first stop structure 100 and the second stop structure 200 along the third direction can also be arbitrarily adjusted within the range of 5 - 6 mm according to actual needs, as long as the dimensions of the first stop structure 100 and the second stop structure 200 along the third direction are equal, and this embodiment does not make specific limitations.
[0057] To facilitate the understanding of the magnetic adsorption type frame 1000 provided in this embodiment. Now, in combination with Figures 1 to 5 the specific assembly steps of the magnetic adsorption type frame 1000 will be described:
[0058] 1) Assemble a number of first docking parts 210 and one second docking part 220 into a second stop structure 200. A total of two second stop structures 200 are assembled to ensure that the lengths of the two second stop structures 200 are equal;
[0059] 2) Extend the two stop structures in the first direction and arrange them oppositely in the second direction between the two first stop structures 100. Assemble the first docking protrusions 211 and the second docking protrusions 221 on the second stop structure 200 with the first sliding grooves 110 on the first stop structure 100 respectively;
[0060] 3) Fix the magnetic parts on the same side end faces of the first stop structure 100 and the second stop structure 200 along the third direction, and the assembly of the magnetic type frame 1000 is completed. The vacant area inside the magnetic type frame 1000 is the storage area for preparing the sample.
[0061] When it is necessary to adjust the thickness of the prepared sample, stack the magnetic type frames 1000 along the third direction and fix the stacked magnetic type frames 1000 together by using the magnetic parts.
[0062] When it is necessary to adjust the size of the prepared sample along the second direction, slide the second stop structure 200 along the first sliding groove 110.
[0063] When it is necessary to adjust the size of the prepared sample along the first direction, increase or decrease the number of the first docking parts 210 in the second stop structure 200. It should be noted that during the process of increasing or decreasing the number of the first docking parts 210 in the second stop structure 200, it is necessary to ensure that the number of the increased or decreased first docking parts 210 in the two second stop structures 200 is equal.
[0064] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. Magnetic adsorption type frame, characterized in that, Comprising: Magnetic components; Two first stop structures (100) oppositely arranged along a first direction, the first stop structures (100) extending along a second direction, and first sliding grooves (110) are provided on the end faces of the two first stop structures (100) oppositely arranged, the first sliding grooves (110) extending along the second direction; And Two second stop structures (200) oppositely arranged along the second direction, located between the two first stop structures (100), the second stop structures (200) extending along the first direction, and at least one of the magnetic components is provided on the same-side end faces of the first stop structures (100) and the second stop structures (200) along a third direction; The two ends of the second stop structure (200) along the first direction are respectively in sliding fit with the first sliding groove (110), the length of the second stop structure (200) along the first direction is adjustable, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.
2. The magnetic adsorption type frame according to claim 1, wherein The second stop structure (200) includes at least one first docking member (210) and a second docking member (220) that are detachably connected, the magnetic component is provided on the first docking member (210) and / or the second docking member (220), first docking protrusions (211) and first docking grooves (212) are respectively provided at the two ends of the first docking member (210) along the first direction, and second docking protrusions (221) and third docking protrusions (222) are respectively provided at the two ends of the second docking member (220) along the first direction; The first docking protrusion (211) can be in sliding fit with the first sliding groove (110) or be docked and fixed with the first docking groove (212) in another first docking member (210), the second docking protrusion (221) can be in sliding fit with the first sliding groove (110), and the third docking protrusion (222) can be docked and fixed with the first docking groove (212).
3. The magnetic adsorption type frame according to claim 2, characterized in that The first docking protrusion (211) includes: A first protrusion portion (2111), connected to the first docking member (210), the first protrusion portion (2111) extending along the first direction; A second protrusion portion (2112), connected to the end of the first protrusion portion (2111) away from the first docking member (210) along the first direction, the second protrusion portion (2112) extending along the first direction, the first sliding groove (110) includes a first sliding portion (111) and a second sliding portion (112) that are communicated, the first protrusion portion (2111) is in sliding fit with the first sliding portion (111), and the second protrusion portion (2112) is in sliding fit with the second sliding portion (112).
4. The magnetic adsorption type frame according to claim 3, characterized in that, The dimension of the second protrusion portion (2112) along the second direction is larger than the dimension of the first protrusion portion (2111) along the second direction.
5. The magnetic adsorption type frame according to claim 2, characterized in that, The first docking protrusion (211), the second docking protrusion (221), and the third docking protrusion (222) have the same size, and the first sliding groove (110) and the first docking groove (212) have the same size.
6. The magnetic adsorption type frame according to any one of claims 1 to 5, characterized in that The magnetic type frame further includes: A measuring ruler (300) is disposed at an end of the first stop structure (100) away from the magnetic member, and the measuring ruler (300) extends along the second direction.
7. The magnetic adsorption type frame according to claim 6, wherein The measuring ruler (300) is correspondingly disposed for each of the first stop structures (100).
8. The magnetic adsorption type frame according to any one of claims 1 to 5, characterized in that, Both the first stop structure (100) and the second stop structure (200) are hollow structures.
9. The magnetic adsorption type frame according to any one of claims 1 to 5, characterized in that The length of the magnetic member along the third direction is 2 to 3 mm.
10. The magnetic adsorption type frame according to any one of claims 1 to 5, characterized in that, The dimensions of the first stop structure (100) and the second stop structure (200) along the third direction are 5 to 6 mm.