A mold for preparing test specimens of variable thickness shear sheet

Abstract

This invention discloses a mold for preparing test specimens for shear sheet tests with variable thickness. The mold includes an upper slot and a lower slot. The upper slot has an upper side slot and an opening at its bottom for overlapping upper and lower samples. Upper limit grooves are located on both sides of the upper slot. The lower slot has a lower side slot and lower limit grooves formed by two limit rods on both sides. This invention uses the overlapping portion of the upper and lower slots to fix the sample. The thickness of the adhesive layer is controlled by the vertical movement of bolts and nuts in the upper and lower slots, ensuring good dimensional stability of the pull-out test specimen. It eliminates the need for manual limiting and pressing, solving the problems of inconvenient manual sample preparation and inconsistent sample specifications. Furthermore, the width and thickness of the adhesive layer can be adjusted according to different adhesive testing requirements. The mold is made entirely of PP material, allowing for easy removal of adhesive residue and facilitating reuse.

Description

Technical Field

[0001] This utility model belongs to the technical field of adhesive sample equipment, specifically relating to a mold for preparing test specimens for shear sheet with variable thickness. Background Technology

[0002] When conducting shear strength tests on the basic properties of adhesives, it is necessary to prepare shear plate bonding experiments. The usual method is to use copper wire for limiting, and then manually press and fix it with clips after applying the adhesive. This method is not easy to operate and it is difficult to keep the sample specifications consistent, resulting in a large error in the experimental results.

[0003] Therefore, a mold for preparing test specimens of shear plates with variable thickness is urgently needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a mold for preparing test specimens for shear sheets with variable thickness.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model provides a mold for preparing test specimens of variable thickness shear sheet, including an upper slot and a lower slot. The upper slot has an upper side slot that runs through the left and right for fixing an upper sample. The bottom of the upper slot has an opening for overlapping the upper and lower samples. Upper limit grooves are provided on both sides of the upper slot at the middle position along the length of the opening. The lower slot has a lower side slot that runs through the left and right for fixing a lower sample. Lower limit grooves composed of two limit rods are provided on both sides of the lower slot. The lower surface of the upper limit groove and the upper surface of the lower limit groove are aligned to form an overlapping part in the opening. The upper limit groove and the lower limit groove are fastened together by bolts and nuts, and the thickness of the adhesive layer between the upper and lower samples is limited by moving the upper and lower positions of the bolts.

[0007] Preferably, the upper slot includes an integrally formed upper top plate, upper bottom plate, and two upper side plates. The upper top plate is disposed on the inner surface of the two upper side plates, and the upper surfaces of all three are flush. The upper bottom plate is disposed on the lower surface of the two upper side plates. The upper top plate, upper bottom plate, and two upper side plates form a first cuboid structure. A left-right through upper side slot for fixing the upper sample is formed on the first cuboid structure. The left ends of the upper top plate, upper bottom plate, and two upper side plates are flush in the length direction.

[0008] Preferably, an opening for overlapping the upper and lower samples is formed between the right end of the upper base plate and the two upper side plates, and an upper limit groove is provided on the two upper side plates at the middle position in the length direction of the opening.

[0009] Preferably, the lower slot includes an integrally formed lower top plate, lower bottom plate, and two lower side plates. The lower bottom plate is disposed on the inner surface of the two lower side plates, and the lower surfaces of all three are flush. The lower top plate is disposed on the upper surface of the two lower side plates. The lower top plate, lower bottom plate, and two lower side plates form a second cuboid structure. A lower side slot for fixing the lower sample is formed on the second cuboid structure. The right ends of the lower top plate, lower bottom plate, and two lower side plates are flush in the length direction.

[0010] Preferably, the two lower side plates are provided with a lower limiting groove composed of two limiting rods, the limiting rods are disposed in the upper limiting groove, and the bolts are disposed in the lower limiting groove.

[0011] Preferably, the upper slot and the lower slot are made of PP material.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] This invention uses the overlapping portion of upper and lower slots to fix the sample. The thickness of the adhesive layer is controlled by the vertical movement of bolts and nuts in the upper and lower slots, ensuring good dimensional stability of the pull-out test specimen. It eliminates the need for manual limiting and pressing, solving the problems of inconvenient manual sample preparation and inconsistent sample specifications. Furthermore, the width and thickness of the adhesive layer can be adjusted according to different adhesive testing requirements. The entire structure is made of PP material, allowing for easy removal of adhesive residue and facilitating reuse. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a mold for preparing a test specimen of a shear sheet with variable thickness according to the present invention;

[0015] Figure 2 This is a top view of a mold for preparing a test specimen of a shear sheet with variable thickness according to the present invention;

[0016] Figure 3 This is a side view of a mold for preparing a test specimen of a shear sheet with variable thickness according to the present invention;

[0017] Figure 4 This is a schematic diagram of the upper slot in this utility model;

[0018] Figure 5 This is a utility model Figure 4 Left side view of the upper middle slot;

[0019] Figure 6 This is a new practical book Figure 4 Top view of the upper middle slot;

[0020] Figure 7This is a schematic diagram of the lower slot in this utility model;

[0021] Figure 8 This is a utility model Figure 7 Side view of the lower middle slot;

[0022] Figure 9 This is a utility model Figure 7 Right side view of the lower middle slot;

[0023] Figure 10 This is a utility model Figure 7 Top view of the lower middle slot. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] In the description of this utility model, it should be understood that the terms "left," "right," etc., indicating the orientation or positional relationship are based on the accompanying drawings. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1

[0028] like Figures 1 to 10As shown, this embodiment provides a mold for preparing test specimens of variable thickness shear sheet, including an upper slot 1 and a lower slot 2, both made of PP material. The upper slot 1 has a through-hole upper side slot 11 for fixing an upper sample, and an opening at the bottom for overlapping the upper and lower samples. Upper slot 1 has upper limit grooves 12 on both sides of the upper slot 1, located at the midpoint of the opening's length. The lower slot 2 has a through-hole lower side slot 22 for fixing a lower sample, and lower limit grooves 22 on both sides of the lower slot 2, each consisting of two limit rods. The lower surface of the upper limit groove 12 and the upper surface of the lower limit groove 22 overlap at the opening. The upper limit groove 12 and the lower limit groove 22 are fastened together by bolts 3 and nuts 31, and the thickness of the adhesive layer between the upper and lower samples is limited by moving the bolts 3 up and down.

[0029] like Figures 4 to 6 As shown, the upper slot 1 includes an integrally formed upper top plate, upper bottom plate, and two upper side plates. The upper top plate is disposed on the inner surface of the two upper side plates, and the upper surfaces of all three are flush. The upper bottom plate is disposed on the lower surface of the two upper side plates. The upper top plate, upper bottom plate, and two upper side plates form a first cuboid structure. A through upper side slot 11 for fixing the upper sample is formed on the first cuboid structure. The left ends of the upper top plate, upper bottom plate, and two upper side plates are flush along their length. An opening for overlapping the upper and lower samples is formed between the right end of the upper bottom plate and the two upper side plates. An upper limit groove 12 is provided on the two upper side plates at the middle position along the length of the opening.

[0030] like Figures 7 to 10 As shown, the lower slot 2 includes an integrally formed lower top plate, lower bottom plate, and two lower side plates. The lower bottom plate is disposed on the inner surface of the two lower side plates, and the lower surfaces of all three are flush. The lower top plate is disposed on the upper surface of the two lower side plates. The lower top plate, lower bottom plate, and two lower side plates form a second cuboid structure. A lower side slot 21 for fixing the lower sample is formed on the second cuboid structure, which runs through the left and right sides. The right ends of the lower top plate, lower bottom plate, and two lower side plates are flush in the length direction. The two lower side plates are provided with a lower limiting groove 22 composed of two limiting rods. The limiting rods are disposed in the upper limiting groove 12, and the bolt 3 is disposed in the lower limiting groove 22.

[0031] The working principle of this embodiment will be further explained below:

[0032] Insert the lower sample into the lower slot from the right end of the lower side slot, and insert the upper sample into the upper slot from the left end of the upper side slot. Then, align the lower surface of the upper slot with the upper surface of the lower slot so that the lower limit rod is located in the upper limit groove. Finally, adjust the position of the bolts in the vertical direction according to the required adhesive layer thickness, and tighten the upper and lower slots with nuts. The entire structure is made of PP material, which allows for easy removal of adhesive residue and facilitates reuse.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mold for preparing test specimens of variable thickness shear sheet, characterized in that, The upper slot (1) and the lower slot (2) are provided. The upper slot (1) is provided with an upper side slot (11) that runs through the left and right sides for fixing the upper sample. The bottom of the upper slot (1) is provided with an opening for overlapping the upper sample and the lower sample. The upper slot (1) is provided with an upper limit groove (12) on both sides and at the middle position of the opening length direction. The lower slot (2) is provided with a lower side slot (21) that runs through the left and right sides for fixing the lower sample. The lower slot (2) is provided with a lower limit groove (22) composed of two limit rods on both sides. The lower surface of the upper limit groove (12) and the upper surface of the lower limit groove (22) are connected to form an overlapping part in the opening. The upper limit groove (12) and the upper limit groove (12) are fastened by bolts (3) and nuts (31) and the thickness of the adhesive layer between the upper sample and the lower sample is limited by moving the upper and lower positions of the bolts (3).

2. The mold for preparing a test specimen with variable thickness shear sheet according to claim 1, characterized in that, The upper slot (1) includes an integrally formed upper top plate, upper bottom plate and two upper side plates. The upper top plate is disposed on the inner surface of the two upper side plates and the upper surfaces of the three are flush. The upper bottom plate is disposed on the lower surface of the two upper side plates. The upper top plate, upper bottom plate and two upper side plates form a first cuboid structure. An upper side slot (11) for fixing the upper sample is formed on the first cuboid structure. The left ends of the upper top plate, upper bottom plate and two upper side plates are flush in the length direction.

3. The mold for preparing a test specimen with variable thickness shear sheet according to claim 2, characterized in that, An opening for overlapping the upper and lower samples is formed between the right end of the upper base plate and the two upper side plates. An upper limit groove (12) is provided on the two upper side plates at the middle position in the length direction of the opening.

4. The mold for preparing a test specimen with variable thickness shear sheet according to claim 1, characterized in that, The lower slot (2) includes an integrally formed lower top plate, lower bottom plate and two lower side plates. The lower bottom plate is disposed on the inner surface of the two lower side plates and the lower surfaces of the three are flush. The lower top plate is disposed on the upper surface of the two lower side plates. The lower top plate, lower bottom plate and two lower side plates form a second cuboid structure. A lower side slot (21) for fixing the lower sample is formed on the second cuboid structure. The right ends of the lower top plate, lower bottom plate and two lower side plates are flush in the length direction.

5. The mold for preparing a test specimen with variable thickness shear sheet according to claim 4, characterized in that, The two lower side plates are provided with a lower limiting groove (22) composed of two limiting rods. The limiting rods are set in the upper limiting groove (12), and the bolt (3) is set in the lower limiting groove (22).

6. The mold for preparing a test specimen with variable thickness shear sheet according to claim 1, characterized in that, The upper slot (1) and lower slot (2) are made of PP material.

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