Cement mortar test piece forming mold with adjustable section size

Abstract

The utility model provides a cement mortar test piece forming mold with an adjustable section size. Comprising a base, a left end plate and a right end plate arranged on the base, four partition plates arranged between the left end plate and the right end plate, a fixing plate arranged on the base and used for abutting against the left end plate, an abutting assembly arranged on the base and used for abutting against the right end plate, positioning pins used for positioning the partition plates and a small partition plate assembly. The small partition plate assembly comprises a small partition plate and a fixing block. Each small partition plate is a T-shaped plate, a main body of each small partition plate can be vertically inserted into a mold cavity defined by every two adjacent partition plates, the mold cavity is divided into two areas which are not communicated with each other, and the transversely-protruding ends of the two sides of each small partition plate are connected with fixing blocks; the fixing block is detachably fixed to the upper end face of the partition plate. The cement mortar test piece forming die can form test pieces with different section sizes according to use requirements, is simple to operate, and can ensure that the section sizes of the test pieces are stable and the test pieces do not deform.

Description

Technical Field

[0001] The utility model belongs to the field of cement mortar experimental equipment, in particular to a cement mortar test piece forming die with adjustable cross-sectional dimensions. Background Art

[0002] The cement mortar test mold is a mold mainly used for forming cement mortar flexural and compressive strength test pieces. It can simultaneously form three (40×40×160) mm prisms and is detachable. This mold is also used in some other test items, such as interface bending tensile strength and water absorption tests. These tests require the specimen size to be (40×40×80) mm. The current standard provides the molding method of this specimen. For example, JC / T 2381-2016 "Repair Mortar" stipulates that first, three extruded polystyrene foam blocks of size (40×40×80) mm are placed in a (40×40×160) mm cement mortar triple mold, and then the mortar is poured. After demolding, a (40×40×80) mm specimen is formed. This method is complicated to operate, and the size of the extruded polystyrene foam block is strictly required. After demolding, polystyrene particles adhere to the surface of the mortar section, which is not easy to remove, and the mold is wasted; JC / T 1004-2017 "Ceramic Tile Grout" stipulates that after the mortar is loaded into the test mold, a 1mm thick partition is inserted in the middle part, and a (40×40×80)mm test piece is formed after demolding. Although this method is simple to operate, it is difficult to ensure that the partition is inserted vertically during the insertion process, which can easily cause the cross-section of the mortar where the partition is inserted to be an inclined surface, resulting in a larger cross-sectional size, and then the water absorption data is biased, which makes the evaluation of product quality inaccurate. Utility Model Content

[0003] In view of this, in order to solve the above technical problems, the utility model proposes a cement mortar specimen forming mold with adjustable cross-sectional dimensions, which can form specimens with different cross-sectional dimensions according to usage requirements. The operation is simple and can ensure that the cross-sectional dimensions of the specimen are stable and not deformed.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A cement mortar specimen forming mold with adjustable cross-sectional size, comprising a base, a left end plate and a right end plate arranged on the base, four partitions arranged between the left end plate and the right end plate, a fixing plate arranged on the base for resisting the left end plate, a tightening assembly arranged on the base for tightening the right end plate, and a positioning pin for positioning the partition; it also includes a small partition assembly, the small partition assembly includes a small partition and a fixing block; the small partition is a T-plate, and its main body can be vertically inserted into the mold cavity surrounded by two adjacent partitions to divide the mold cavity into two unconnected areas, and the laterally protruding ends on both sides of the small partition are connected to the fixing blocks; the fixing blocks are detachably fixed to the upper end faces of the partitions.

[0006] The structure of the existing cement mortar triple test mold mainly consists of a base, left and right end plates, four partitions separating the area between the left and right end plates, a fixing plate against the left end plate, a tightening assembly for tightening the right end plate, and a positioning pin for positioning the partition. The size of the three separated mold cavities is (40×40×160) mm, of which 160 mm is the length, and three cement mortar specimens with a size of (40×40×160) mm can be formed at the same time; when specimens of other sizes need to be formed, the small partition can be vertically inserted in The mold cavity is divided into mold cavities of required sizes; since the small partition is the end of the T-plate protruding laterally on both sides connected to the fixed block (the top of the fixed block is not higher than the top of the small partition), the fixed block can be fixed to the upper end surface of the partition, thereby ensuring the fixation of the position of the small partition and being in a vertical state in the membrane cavity, which can ensure that the cross-sectional size of the specimen is stable and the cross-sectional shape is not deformed; the material of the main part of the small partition inserted into the mold cavity can be stainless metal material (stainless steel or space aluminum) or hard plastic sheet (such as polytetrafluoroethylene or high-density polyethylene).

[0007] Furthermore, the top of the small partition is no more than 5 mm higher than the top of the partition.

[0008] Considering that there is a scraping process after injecting cement mortar during the test piece manufacturing process, the top of the small partition cannot be too high, otherwise it will affect the scraping operation. Therefore, it is designed to be no higher than 5mm from the top of the partition, and preferably below 3mm.

[0009] Furthermore, the main body thickness of the small partition is 1±0.1 mm, which is within the range allowed by relevant standards and does not affect the specimen evaluation.

[0010] Furthermore, the fixing block is a plug-in block structure protruding downward; and a slot adapted to the fixing block structure and used for inserting the fixing block is provided at one-half of the length of the upper end surface of the partition.

[0011] The length of the cement mortar triple test mold with a size of (40×40×160) mm is halfway up, that is, 80 mm in length. Here, a small partition is vertically fixed at half of the mold cavity by inserting a fixing block into a slot, dividing a (40×40×160) mm mold cavity into two (40×40×80) mm mold cavities (the thickness of the small partition is within the allowable range and can be ignored). It can be used to form test pieces of the required size for tests such as interface bending tensile strength and water absorption, and 6 pieces can be formed at one time (3 (40×40×160) mm mold cavities are divided into 6 (40×40×80) mm mold cavities). At the same time, due to the fixing method of the fixing block inserted into the slot, the fixing method is reliable, the small partition is unlikely to deviate, and the size of the obtained test piece is reliable and stable.

[0012] Furthermore, a gasket is provided on the side wall of the fixing block to facilitate the insertion of the fixing block and the fixation with the slot.

[0013] Furthermore, it also includes a slot plug, which is detachably inserted into the slot to close the slot.

[0014] When there is no need to separate the mold cavity, such as when preparing a (40×40×160) mm test piece, the slot plug can be inserted into the slot to seal the slot to prevent cement mortar from falling in during the manufacturing process; when the mold cavity needs to be separated, the slot plug can be pulled out.

[0015] Furthermore, a magnetic strip is provided on the upper end surface of the partition along the length direction, and a scale size is marked on the magnetic strip along the length direction; a magnetic block that can be adsorbed on the magnetic strip is provided at the bottom of the fixed block.

[0016] With this structural setting, the small partition assembly can be fixed at any position in the mold cavity, and the magnetic block at the bottom of the fixed block and the magnetic strip on the upper end face of the partition are fixed by strong magnet adsorption. The mold cavity of any length can be adjusted to prepare test pieces with any cross-sectional size. For example, when preparing a test piece of (40×40×40) mm, the small partition is aligned with the 40 mm scale and inserted vertically into the mold cavity. At this time, the magnetic block at the bottom of the fixed block is firmly adsorbed on the magnetic strip at the 40 mm scale position on the upper end face of the partition, fixing the position of the small partition and ensuring that the small partition does not leak or deviate.

[0017] Furthermore, the scale is divided into intervals of 5 mm, and mortar specimens of different lengths (ranging from 5 to 160 mm) can be formed according to actual needs.

[0018] Furthermore, the fixing block is provided with a mark for aligning a scale, so as to quickly determine the position of the small partition for inserting into the mold cavity.

[0019] Compared with the prior art, the cement mortar specimen forming mold with adjustable cross-sectional size described in the utility model has the following advantages:

[0020] (1) The cement mortar specimen molding mold with adjustable cross-sectional size described in the utility model can mold specimens with different cross-sectional sizes according to the use requirements, and the operation is convenient. The small partition assembly has a simple structure and is easy to operate. The small partition can be firmly fixed in the required position of the mold cavity by the fixing block, and it can be ensured that the small partition does not tilt or deviate. The cross-sectional size of the prepared specimen is stable and does not deform.

[0021] (2) The small partition described in the utility model is inserted into the slot at the half of the top of the partition through the fixing block, which fixes the partition position of the small partition in the mold cavity and ensures that the small partition is in a vertical state. The fixing method is simple, convenient and reliable;

[0022] (3) The small partition described in the utility model is fixed by adsorbing the magnetic block at the bottom of the fixing block and the magnetic strip on the upper end surface of the partition, ensuring that the position of the small partition is fixed and in a vertical state. The small partition assembly can be adjusted to any position in the mold cavity along the length direction, and is firmly fixed by strong magnetic attraction when it reaches the corresponding scale, so that test pieces of any required cross-sectional size can be prepared. The operation is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic structural diagram of a cement mortar specimen forming mold with adjustable cross-sectional dimensions as described in Example 1 of the utility model;

[0025] Figure 2 It is a front view structural schematic diagram of the cement mortar specimen forming mold with adjustable cross-sectional size described in Example 1 of the utility model;

[0026] Figure 3 This is a structural schematic diagram of the cement mortar specimen molding mold with adjustable cross-sectional size described in Example 1 of the utility model without the small partition assembly inserted;

[0027] Figure 4 This is a schematic structural diagram of the small partition assembly described in Example 1 of the utility model;

[0028] Figure 5 This is a schematic diagram of the top view of the small partition assembly described in Example 1 of the utility model;

[0029] Figure 6This is a schematic diagram of the structure of the small partition described in Example 1 of the utility model;

[0030] Figure 7 This is a schematic structural diagram of a cement mortar specimen forming mold with adjustable cross-sectional dimensions as described in Example 2 of the present utility model;

[0031] Figure 8 This is a schematic structural diagram of the cement mortar specimen molding mold with adjustable cross-sectional dimensions described in Example 2 of the present utility model without the small partition assembly inserted;

[0032] Fig. 9 This is a schematic structural diagram of the small partition assembly described in Example 2 of the utility model;

[0033] Fig.10 This is a schematic diagram of the top view of the small partition assembly described in Example 2 of the utility model.

[0034] Description of reference numerals:

[0035] 1-base, 2-left end plate, 3-right end plate, 4-partition, 5-fixed plate, 6-tightening assembly, 7-locating pin, 8-small partition assembly, 9-small partition, 10-fixed block, 11-gasket, 12-slot, 13-magnetic strip, 14-magnetic block, 15-label. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0040] Example 1

[0041] like Figures 1 to 6 As shown, a cement mortar specimen molding mold with adjustable cross-sectional size comprises a base 1, a left end plate 2 and a right end plate 3 arranged on the base 1, four partitions 4 arranged between the left end plate 2 and the right end plate 3, a fixing plate 5 arranged on the base 1 for abutting against the left end plate 2, a tightening assembly 6 arranged on the base 1 for tightening the right end plate 3, a positioning pin 7 for positioning the partition 4, and a small partition assembly 8 for separating the mold cavity;

[0042] The small partition assembly 8 includes a small partition 9 and a fixed block 10; the small partition 9 is a T-plate, and its main body can be vertically inserted into the mold cavity surrounded by two adjacent partitions 4 to divide the mold cavity into two unconnected areas. The main body thickness of the small partition 9 is 1±0.1mm, and the top of the small partition 9 is not more than 5mm higher than the top of the partition 4; the laterally protruding ends on both sides of the small partition 9 are connected with fixed blocks 10, and the fixed block 10 is a plug-in structure protruding downward, and a gasket 11 is provided on the side wall of the fixed block 10; the upper end surface of the partition 4 is provided with a slot 12 adapted to the structure of the fixed block 10 for detachable insertion of the fixed block 10 at half of the length direction; when the fixed block 10 is not inserted into the slot 12, a slot plug is inserted to close it, and the slot plug is removable.

[0043] The use process of the cement mortar specimen forming mold with adjustable cross-sectional size described in this embodiment is as follows:

[0044] When preparing a test piece with a size of (40×40×80) mm, align the fixing block 10 with the slot 112, insert the small partition 9 vertically into the mold cavity, and insert the fixing block 10 into the slot 12 at the same time, so that one (40×40×160) mm mold cavity is divided into two (40×40×80) mm mold cavities, and the remaining two (40×40×160) mm mold cavities are also divided in the same way, so that 6 (40×40×80) mm mold cavities can be obtained, and 6 test pieces of the required size can be formed at the same time;

[0045] When the mold cavity does not need to be divided, such as when preparing a (40×40×160) mm test piece, the slot plug can be inserted into the slot 12 to close the slot 12 before the subsequent test piece production is carried out.

[0046] Example 2

[0047] Based on the embodiment 1, the difference from the embodiment is that the fixing method of the fixing block 10 and the partition 4 is different, such as Figures 7 to 10As shown, a magnetic strip 13 is provided on the upper end surface of the partition 4 along the length direction, and a scale size is marked on the magnetic strip 13 along the length direction, and the scale is divided into 5 mm intervals; a magnetic block 14 that can be adsorbed on the magnetic strip 13 is provided at the bottom of the fixed block 10, and a mark 15 for aligning the scale is provided on the fixed block 10.

[0048] The use process of the cement mortar specimen forming mold with adjustable cross-sectional size described in this embodiment is as follows:

[0049] The small partition assembly 8 can be fixed at any position of the mold cavity along the length direction by magnetic attraction. For example, when preparing a test piece with a size of (40×40×40) mm, align the small partition 9 with the 40 mm scale and insert it vertically into the mold cavity. At this time, the magnetic block 14 at the bottom of the fixed block 10 is firmly adsorbed on the 40 mm scale position of the magnetic strip 13 on the upper end surface of the partition 4. The small partition 9 separates a small mold cavity with a size of (40×40×40) mm, and subsequent preparation of test pieces of corresponding sizes can be carried out.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cement mortar specimen forming mold with adjustable cross-sectional size, comprising a base, a left end plate and a right end plate arranged on the base, four partitions arranged between the left end plate and the right end plate, a fixing plate arranged on the base for abutting against the left end plate, a tightening assembly arranged on the base for tightening the right end plate, and a positioning pin for positioning the partition, characterized in that: It also includes a small partition assembly, which includes a small partition and a fixed block; the small partition is a T-plate, and its main body can be vertically inserted into the mold cavity surrounded by two adjacent partitions to divide the mold cavity into two unconnected areas, and the laterally protruding ends on both sides of the small partition are connected to the fixed block; the fixed block is detachably fixed to the upper end surface of the partition.

2. The cement mortar specimen forming mold with adjustable cross-sectional size according to claim 1, characterized in that: The top of the small partition is no more than 5 mm higher than the top of the partition.

3. The cement mortar specimen forming mold with adjustable cross-sectional size according to claim 1, characterized in that: The main body thickness of the small partition is 1±0.1 mm.

4. The cement mortar specimen forming mold with adjustable cross-sectional size according to any one of claims 1 to 3, characterized in that: The fixing block is a plug-in block structure protruding downwards; a slot adapted to the fixing block structure and used for inserting the fixing block is provided at one-half of the length of the upper end surface of the partition.

5. The cement mortar specimen forming mold with adjustable cross-sectional dimensions according to claim 4, characterized in that: A gasket is arranged on the side wall of the fixing block.

6. The cement mortar specimen forming mold with adjustable cross-sectional dimensions according to claim 4, characterized in that: It also includes a slot plug, which is detachably inserted into the slot and is used to close the slot.

7. The cement mortar specimen forming mold with adjustable cross-sectional size according to any one of claims 1 to 3, characterized in that: The upper end surface of the partition is provided with a magnetic strip along the length direction, and the magnetic strip is marked with scale dimensions along the length direction; the bottom of the fixed block is provided with a magnetic block that can be adsorbed on the magnetic strip.

8. The cement mortar specimen forming mold with adjustable cross-sectional dimensions according to claim 7, characterized in that: The scale is divided at intervals of 5 mm.

9. The cement mortar specimen forming mold with adjustable cross-sectional dimensions according to claim 7, characterized in that: The fixing block is provided with a mark for aligning the scale.

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