Plastering sawtooth-shaped pull trough plate

Abstract

The utility model relates to a sawtooth-shaped pull trough plate for plastering, and belongs to the technical field of concrete plastering engineering. Comprising a main sawtooth-shaped plate, an auxiliary sawtooth-shaped plate and an auxiliary sawtooth-shaped plate which are sequentially stacked from top to bottom, a main L-shaped plate is fixedly connected to the rear side of the main sawtooth-shaped plate, an auxiliary L-shaped plate is fixedly connected to the rear side of the auxiliary sawtooth-shaped plate, and the auxiliary L-shaped plate is in sliding connection with the main L-shaped plate; a secondary L-shaped plate is fixedly connected to the rear side of the secondary sawtooth-shaped plate, and the secondary L-shaped plate is in sliding connection with the auxiliary L-shaped plate. By arranging the main sawtooth-shaped plate, the auxiliary sawtooth-shaped plate and the secondary sawtooth-shaped plate, in the actual use process, the relative positions of the main sawtooth-shaped plate, the auxiliary sawtooth-shaped plate and the secondary sawtooth-shaped plate can be changed according to construction requirements, sawtooth grooves of the main sawtooth-shaped plate, the auxiliary sawtooth-shaped plate and the secondary sawtooth-shaped plate are staggered, and therefore the purpose of changing the groove distance is achieved; and therefore, higher flexibility and applicability are provided in different construction environments.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete plastering engineering, in particular to a plastering sawtooth grooved plate. Background Art

[0002] During the construction of the base layer of plaster mortar in concrete finishing projects, a plastering sawtooth grooving plate is used to groove the base layer mortar, creating a serrated shape. This increases the density of the base layer mortar. Furthermore, the jagged shape of the base layer mortar strengthens the bond between the base layer and the surface layer mortar. Furthermore, the serrated base layer reduces surface shrinkage stress, effectively preventing surface cracking.

[0003] The size of the grooves in plastering serrated grooved plates directly determines the quality and effectiveness of the work. Therefore, in practical applications, the groove spacing must be tailored to the specific construction environment and requirements to ensure optimal results. However, existing plastering serrated grooved plates on the market often have a fixed groove spacing, which limits the tool to creating grooves of a specific size. This limitation reduces its applicability and prevents it from flexibly adapting to diverse construction conditions. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a plastering sawtooth groove plate. The technical solution of the present invention is as follows:

[0005] The serrated plate is fixedly connected to the main L-shaped plate on the rear side of the main serrated plate, and the secondary L-shaped plate is fixedly connected to the secondary L-shaped plate on the rear side of the secondary serrated plate. The secondary L-shaped plate is slidably connected to the main L-shaped plate, and the secondary serrated plate is fixedly connected to the secondary L-shaped plate on the rear side of the secondary serrated plate. The secondary L-shaped plate is slidably connected to the secondary L-shaped plate. An adjustment groove is provided on the right side of the surface of the main L-shaped plate, and a threaded connection hole is provided on the right side of the surface of the secondary L-shaped plate. A short bolt is slidably connected to the inside of the adjustment groove, and the end of the short bolt is threadedly connected to the inside of the threaded connection hole. The surface of the main L-shaped plate is provided with an adjustment groove. An adjusting slot 2 is provided through the left side, and an adjusting slot 3 is provided through the left side of the surface of the secondary L-shaped plate, the length of the adjusting slot 3 is greater than the length of the adjusting slot 2, and a threaded connection hole 2 is provided on the left side of the surface of the secondary L-shaped plate, and a long bolt is slidably connected to the inside of the adjusting slot 2, and the end of the long bolt passes through the adjusting slot 3 and is threadedly connected to the inside of the threaded connection hole 2. An adjusting piece 1 for driving the short bolt to move is connected to the front surface of the main L-shaped plate and located on the right side of the adjusting slot 1, and an adjusting piece 2 for driving the long bolt to move is connected to the front surface of the main L-shaped plate and located on the right side of the adjusting slot 2. A positioning assembly is connected to the front side of the main L-shaped plate and located above the adjusting slots 1 and 2, and a handle is fixedly connected to the upper surface of the main serrated plate.

[0006] Optionally, the adjusting member 1 includes a square block, a threaded rod and a fixing seat, the square block is movably sleeved on the outside of the short bolt through a through hole opened through the front side and is located in front of the adjusting slot 1, the threaded rod is rotatably connected to the right side of the square block, the fixing seat is fixedly connected to the front side of the main L-shaped plate and is located on the right side of the adjusting slot 1, and the fixing seat is threadedly sleeved on the outside of the threaded rod through a threaded through hole opened through the side wall.

[0007] Optionally, one end of the threaded rod away from the square block is fixedly connected to a knob.

[0008] Optionally, the positioning assembly includes an elastic positioning pin 1, an elastic positioning pin 2 and an elastic positioning pin 3 for determining the position of the short bolt, and an elastic positioning pin 4 and an elastic positioning pin 5 for determining the position of the long bolt, the elastic positioning pin 1, the elastic positioning pin 2 and the elastic positioning pin 3 are all connected above the adjusting slot 1, and when the short bolt is directly below the elastic positioning pin 1, the main serrated plate and the secondary serrated plate are aligned and coincident, and the spacing between the elastic positioning pin 1 and the elastic positioning pin 2 is one-third of the length of the serrated groove of the main serrated plate, and the spacing between the elastic positioning pin 1 and the elastic positioning pin 3 is one-half of the length of the serrated groove of the main serrated plate, and the elastic positioning pin 4 and the elastic positioning pin 5 are both connected above the adjusting slot 2, and when the long bolt is directly below the elastic positioning pin 4, the main serrated plate and the secondary serrated plate are aligned and coincident, and the spacing between the elastic positioning pin 4 and the elastic positioning pin 5 is two-thirds of the length of the serrated groove of the main serrated plate.

[0009] Optionally, the elastic locating pin includes a sleeve, a spring and a limit block, the rear side of the sleeve is fixedly connected to a fixed plate, the fixed plate is fixedly connected to the front side of the main L-shaped plate by screws, the spring is fixedly connected to the inside of the sleeve, the limit block is fixedly connected to the lower end of the spring, the limit block is slidably connected to the bottom of the inside of the sleeve, and the upper surface of the square block is provided with a limit hole that matches the limit block.

[0010] Optionally, the limiting block is a hemisphere.

[0011] Optionally, the rear side of the main L-shaped plate is fixedly connected to multiple sets of T-shaped bars 1, the front side of the secondary L-shaped plate is provided with multiple sets of T-shaped slots 1 that slide with the T-shaped bars 1, the rear side of the secondary L-shaped plate is fixedly connected to multiple sets of T-shaped bars 2, and the front side of the secondary L-shaped plate is provided with multiple sets of T-shaped slots 2 that slide with the T-shaped bars 2.

[0012] All the above optional technical solutions can be combined arbitrarily, and the present utility model does not provide detailed descriptions of the structures after the combinations.

[0013] By means of the above solution, the beneficial effects of the present invention are as follows:

[0014] The utility model provides a main serrated plate, a secondary serrated plate and a minor serrated plate. In actual use, the relative positions of the main serrated plate, the secondary serrated plate and the minor serrated plate can be changed according to construction requirements, so that the serrated grooves between the three are staggered with each other, thereby achieving the purpose of changing the groove pitch, and further providing greater flexibility and applicability in different construction environments.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of the plastering serrated groove plate provided by the utility model in the first working state;

[0017] Figure 2 This is a schematic diagram of the overall appearance structure of the plastering zigzag groove plate provided by the utility model in the second working state;

[0018] Figure 3 This is a schematic diagram of the overall appearance structure of the plastering zigzag groove plate provided by the utility model in the third working state;

[0019] Figure 4 for Figure 3 A top-down cross-sectional view of

[0020] Figure 5 This is a schematic diagram of the exploded structure of the plastering zigzag grooved plate provided by the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the main L-shaped plate, the auxiliary L-shaped plate and the secondary L-shaped plate in the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the main L-shaped plate, short bolts, long bolts, adjusting piece 1, adjusting piece 2 and positioning assembly in the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the short bolt, the adjusting member 1 and the elastic positioning pin 1 in the present invention;

[0024] Figure 9 This is a schematic diagram of the exploded structure of the elastic positioning pin 1 in the present utility model.

[0025] Numbers in the figure: 1. Main serrated plate; 11. Main L-shaped plate; 111. Adjustment slot 1; 112. Adjustment slot 2; 113. T-shaped bar 1; 2. Secondary serrated plate; 21. Secondary L-shaped plate; 211. Threaded connection hole 1; 212. Adjustment slot 3; 213. T-shaped slot 1; 214. T-shaped bar 2; 3. Secondary serrated plate; 31. Secondary L-shaped plate; 311. Threaded connection hole 2; 312. T-shaped slot 2; 4. Short bolt; 5. Long bolt; 6. Adjustment Part one; 61. Square block; 611. Through hole; 612. Limiting hole; 62. Threaded rod; 621. Knob; 63. Fixing seat; 631. Threaded through hole; 7. Adjusting part two; 8. Positioning assembly; 81. Elastic locating pin one; 811. Sleeve; 812. Fixing plate; 813. Spring; 814. Limiting block; 82. Elastic locating pin two; 83. Elastic locating pin three; 84. Elastic locating pin four; 85. Elastic locating pin five; 9. Handle. DETAILED DESCRIPTION

[0026] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] See also Figure 1-9The utility model provides a plastering serrated grooved plate, comprising a main serrated plate 1, a secondary serrated plate 2 and a secondary serrated plate 3. The main serrated plate 1, the secondary serrated plate 2 and the secondary serrated plate 3 are stacked in sequence from top to bottom. The rear side of the main serrated plate 1 is fixedly connected to the main L-shaped plate 11, and the rear side of the secondary serrated plate 2 is fixedly connected to the secondary L-shaped plate 21. The secondary L-shaped plate 21 is slidably connected to the main L-shaped plate 11. The rear side of the secondary serrated plate 3 is fixedly connected to the secondary L-shaped plate 31, and the secondary L-shaped plate 31 is slidably connected to the secondary L-shaped plate 21. An adjustment groove 111 is provided on the right side of the surface of the main L-shaped plate 11, and a threaded connection hole 211 is provided on the right side of the surface of the secondary L-shaped plate 21. A short bolt 4 is slidably connected to the inside of the adjustment groove 111, and the end of the short bolt 4 is threadedly connected to the inside of the threaded connection hole 211. The left side of the surface of the main L-shaped plate 11 is provided An adjusting slot 2 112 is provided, and an adjusting slot 3 212 is provided on the left side of the surface of the secondary L-shaped plate 21. The length of the adjusting slot 3 212 is greater than the length of the adjusting slot 2 112. A threaded connection hole 2 311 is provided on the left side of the surface of the secondary L-shaped plate 31. A long bolt 5 is slidably connected to the inside of the adjusting slot 2 112. The end of the long bolt 5 passes through the adjusting slot 3 212 and is threadedly connected to the inside of the threaded connection hole 2 311. An adjusting piece 1 6 for driving the short bolt 4 to move is connected to the front surface of the main L-shaped plate 11 and is located on the right side of the adjusting slot 1 111. An adjusting piece 2 7 for driving the long bolt 5 to move is connected to the front surface of the main L-shaped plate 11 and is located on the right side of the adjusting slot 2 112. A positioning assembly 8 is connected to the front side of the main L-shaped plate 11 and above the adjusting slot 1 111 and the adjusting slot 2 112. A handle 9 is fixedly connected to the upper surface of the main serrated plate 1.

[0028] The utility model provides a main serrated plate 1, a secondary serrated plate 2 and a secondary serrated plate 3. During actual use, the relative positions of the main serrated plate 1, the secondary serrated plate 2 and the secondary serrated plate 3 can be changed according to construction requirements, so that the serrated grooves between the three are staggered with each other, thereby achieving the purpose of changing the groove pitch and providing greater flexibility and applicability.

[0029] Specifically, the operation is as follows: Adjusting the position of the short bolt 4 with the adjustment member 1 (6) causes the short bolt 4 to move the secondary L-shaped plate 21, changing the relative position of the secondary serrated plate 2 and the primary serrated plate 1. Adjusting the position of the long bolt 5 with the adjustment member 2 (7) causes the long bolt 5 to move the secondary L-shaped plate 31, changing the relative position of the secondary serrated plate 3 and the primary serrated plate 1, thereby adjusting the overall slot pitch. Furthermore, during the adjustment process, the actual position of the short bolt 4 and long bolt 5 can be determined using the positioning assembly 8, making the adjustment process more convenient.

[0030] Specifically, the short bolts 4 are threadedly connected to the auxiliary L-shaped plate 21, and the long bolts 5 are also threadedly connected to the secondary L-shaped plate 31. The threaded connection structure facilitates the disassembly of the main serrated plate 1, the auxiliary serrated plate 2, and the secondary serrated plate 3 for later maintenance, cleaning, and replacement.

[0031] Furthermore, the adjusting member 6 includes a square block 61, a threaded rod 62 and a fixing seat 63. The square block 61 is movably sleeved on the outside of the short bolt 4 through a through hole 611 opened through the front side and is located in front of the adjusting slot 111. The threaded rod 62 is rotatably connected to the right side of the square block 61. The fixing seat 63 is fixedly connected to the front side of the main L-shaped plate 11 and is located on the right side of the adjusting slot 111. The fixing seat 63 is threadedly sleeved on the outside of the threaded rod 62 through a threaded through hole 631 opened through the side wall.

[0032] Specifically, when the position of the short bolt 4 needs to be adjusted, this can be achieved by rotating the threaded rod 62. Due to the threaded fit between the threaded rod 62 and the threaded through hole 631, rotating the threaded rod 62 drives the square block 61 to move to the left. This allows the square block 61, through its connection with the short bolt 4, to drive the secondary L-shaped plate 21 and the secondary serrated plate 2 to move synchronously, thus achieving precise adjustment. It should be noted that the structure and principle of the adjustment member 1 6 and the adjustment member 2 7 are identical, and therefore will not be further described in this article.

[0033] Furthermore, a knob 621 is fixedly connected to one end of the threaded rod 62 away from the square block 61 .

[0034] Specifically, when operating, the construction personnel can rotate the knob 621 to drive the threaded rod 62 to rotate, thereby achieving the desired function.

[0035] Furthermore, the positioning assembly 8 includes an elastic positioning pin 1 81, an elastic positioning pin 2 82 and an elastic positioning pin 3 83 for determining the position of the short bolt 4 and an elastic positioning pin 4 84 and an elastic positioning pin 5 85 for determining the position of the long bolt 5. The elastic positioning pin 1 81, the elastic positioning pin 2 82 and the elastic positioning pin 3 83 are all connected above the adjustment slot 1 111. When the short bolt 4 is located directly below the elastic positioning pin 1 81, the main serrated plate 1 and the auxiliary serrated plate 2 are aligned, and the elastic positioning pin 1 81 and the elastic positioning pin 2 82 are aligned. The spacing between them is one-third of the length of the serrated groove of the main serrated plate 1, the spacing between the elastic locating pin 1 81 and the elastic locating pin 3 83 is one-half of the length of the serrated groove of the main serrated plate 1, the elastic locating pin 4 84 and the elastic locating pin 5 85 are both connected above the adjustment groove 2 112, and when the long bolt 5 is directly below the elastic locating pin 4 84, the main serrated plate 1 and the secondary serrated plate 3 are overlapped and aligned, and the spacing between the elastic locating pin 4 84 and the elastic locating pin 5 85 is two-thirds of the length of the serrated groove of the main serrated plate 1.

[0036] Specifically, through the setting of the positioning assembly 8, the construction personnel can accurately control the moving distance of the auxiliary serrated plate 2 and the secondary serrated plate 3 during the adjustment process, thereby ensuring that the adjusted groove pitch has a high degree of accuracy. Specifically, when it is necessary to adjust the serrated groove length of the plastering serrated groove plate to half of the original length, it is only necessary to adjust the short bolt 4 to the position directly below the elastic positioning pin 3 83 through the adjusting member 1 6. When it is necessary to adjust the serrated groove length of the plastering serrated groove plate to one-third of the original length, it is necessary to adjust the short bolt 4 to the position directly below the elastic positioning pin 2 82 through the adjusting member 1 6, and then adjust the long bolt 5 to the position directly below the elastic positioning pin 5 85 through the adjusting member 2 7. When it is necessary to restore the original length, it is necessary to adjust the short bolt 4 to the position directly below the elastic positioning pin 1 81 through the adjusting member 1 6, and then adjust the long bolt 5 to the position directly below the elastic positioning pin 4 84 through the adjusting member 2 7. The adjustment process is simple and convenient to operate, reduces the time for repeated positioning, and greatly improves the convenience and work efficiency of adjustment.

[0037] Furthermore, the elastic locating pin 81 includes a sleeve 811, a spring 813 and a limit block 814. The rear side of the sleeve 811 is fixedly connected to a fixed plate 812, and the fixed plate 812 is fixedly connected to the front side of the main L-shaped plate 11 by screws. The spring 813 is fixedly connected to the inside of the sleeve 811, and the limit block 814 is fixedly connected to the lower end of the spring 813. The limit block 814 is slidably connected to the inside and bottom of the sleeve 811, and the upper surface of the square block 61 is provided with a limit hole 612 that cooperates with the limit block 814.

[0038] Specifically, during the adjustment process, spring 813 is in a compressed state. When the short bolt 4 is adjusted to directly below the elastic positioning pin 1 81, the position of the limit block 814 coincides with the position of the limit hole 612. At this time, the spring 813 recovers its deformation, thereby elastically squeezing the limit block 814 into the interior of the limit hole 612, indicating that the position adjustment is complete. It should be noted that the structures and principles of the elastic positioning pin 1 81, the elastic positioning pin 2 82, the elastic positioning pin 3 83, the elastic positioning pin 4 84 and the elastic positioning pin 5 85 are the same and will not be described in detail herein.

[0039] Furthermore, the limiting block 814 is a hemispherical body.

[0040] Specifically, the hemispherical limiting block 814 allows construction personnel to disengage the limiting block 814 from the limiting hole 612 by simply applying a certain external force during the adjustment process.

[0041] Furthermore, the rear side of the main L-shaped plate 11 is fixedly connected to multiple groups of T-shaped bars 113, the front side of the secondary L-shaped plate 21 is provided with multiple groups of T-shaped slots 213 that slide with the T-shaped bars 113, the rear side of the secondary L-shaped plate 21 is fixedly connected to multiple groups of T-shaped bars 214, and the front side of the secondary L-shaped plate 31 is provided with multiple groups of T-shaped slots 2 312 that slide with the T-shaped bars 214.

[0042] Specifically, during the assembly process, it is only necessary to insert the T-bar 113 into the T-slot 1 213 at the corresponding position, and insert the T-bar 214 into the T-slot 2 312 at the corresponding position to complete the assembly of the main serrated plate 1, the secondary serrated plate 2 and the secondary serrated plate 3. The operation is simple and convenient. Secondly, the assembled main L-shaped plate 11, the secondary L-shaped plate 21 and the secondary L-shaped plate 31 can only slide horizontally. With the cooperation of the short bolt 4 and the adjusting member 1 6, the position of the secondary L-shaped plate 21 can be fixed and locked. With the cooperation of the long bolt 5 and the adjusting member 2 7, the position of the secondary L-shaped plate 31 can be fixed and locked. In this way, the secondary L-shaped plate 21 and the secondary L-shaped plate 31 can be firmly maintained in the desired position after assembly, avoiding displacement caused by vibration or external force.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A plastering sawtooth groove plate, characterized in that: The invention comprises a main sawtooth plate (1), a secondary sawtooth plate (2) and a secondary sawtooth plate (3), wherein the main sawtooth plate (1), the secondary sawtooth plate (2) and the secondary sawtooth plate (3) are stacked in sequence from top to bottom, the rear side of the main sawtooth plate (1) is fixedly connected to a main L-shaped plate (11), the rear side of the secondary sawtooth plate (2) is fixedly connected to a secondary L-shaped plate (21), the secondary L-shaped plate (21) is slidably connected to the main L-shaped plate (11), and the rear side of the secondary sawtooth plate (3) is fixedly connected to a secondary L-shaped plate (31). ), the secondary L-shaped plate (31) is slidably connected to the auxiliary L-shaped plate (21), an adjustment groove (111) is provided on the right side of the surface of the main L-shaped plate (11), a threaded connection hole (211) is provided on the right side of the surface of the auxiliary L-shaped plate (21), a short bolt (4) is slidably connected inside the adjustment groove (111), and the end of the short bolt (4) is threadedly connected to the inside of the threaded connection hole (211), and an adjustment groove (2) is provided on the left side of the surface of the main L-shaped plate (11). 12), the left side of the surface of the auxiliary L-shaped plate (21) is provided with an adjustment groove three (212), the length of the adjustment groove three (212) is greater than the length of the adjustment groove two (112), the left side of the surface of the secondary L-shaped plate (31) is provided with a threaded connection hole two (311), the interior of the adjustment groove two (112) is slidably connected with a long bolt (5), the end of the long bolt (5) passes through the adjustment groove three (212) and is threadedly connected to the interior of the threaded connection hole two (311), the main L-shaped plate (11 ) is connected to an adjusting member 1 (6) on the front surface of the main L-shaped plate (11) and located on the right side of the adjusting slot 1 (111) for driving the short bolt (4) to move, and is connected to an adjusting member 2 (7) on the front surface of the main L-shaped plate (11) and located on the right side of the adjusting slot 2 (112) for driving the long bolt (5) to move, and is connected to a positioning assembly (8) on the front side of the main L-shaped plate (11) and located above the adjusting slot 1 (111) and the adjusting slot 2 (112), and a handle (9) is fixedly connected to the upper surface of the main serrated plate (1).

2. A plastering zigzag grooved plate according to claim 1, characterized in that: The adjusting member (6) comprises a square block (61), a threaded rod (62) and a fixing seat (63); the square block (61) is movably sleeved on the outside of the short bolt (4) through a through hole (611) opened through the front side and is located in front of the adjusting slot (111); the threaded rod (62) is rotatably connected to the right side of the square block (61); the fixing seat (63) is fixedly connected to the front side of the main L-shaped plate (11) and is located on the right side of the adjusting slot (111); the fixing seat (63) is threadedly sleeved on the outside of the threaded rod (62) through a threaded through hole (631) opened through the side wall.

3. The plastering zigzag grooved plate according to claim 2, characterized in that: One end of the threaded rod (62) away from the square block (61) is fixedly connected to a knob (621).

4. The plastering zigzag grooved plate according to claim 2, characterized in that: The positioning assembly (8) includes an elastic positioning pin 1 (81), an elastic positioning pin 2 (82) and an elastic positioning pin 3 (83) for determining the position of the short bolt (4) and an elastic positioning pin 4 (84) and an elastic positioning pin 5 (85) for determining the position of the long bolt (5). The elastic positioning pin 1 (81), the elastic positioning pin 2 (82) and the elastic positioning pin 3 (83) are all connected above the adjustment slot 1 (111). When the short bolt (4) is located directly below the elastic positioning pin 1 (81), the main sawtooth plate (1) and the auxiliary sawtooth plate (2) are aligned and overlapped. The elastic positioning pin 1 (81) and the elastic positioning pin 2 (82) are aligned and overlapped. ) is one-third of the length of the sawtooth groove of the main sawtooth plate (1), the distance between the elastic positioning pin one (81) and the elastic positioning pin three (83) is one-half of the length of the sawtooth groove of the main sawtooth plate (1), the elastic positioning pin four (84) and the elastic positioning pin five (85) are both connected above the adjustment groove two (112), and when the long bolt (5) is located directly below the elastic positioning pin four (84), the main sawtooth plate (1) and the secondary sawtooth plate (3) are aligned, and the distance between the elastic positioning pin four (84) and the elastic positioning pin five (85) is two-thirds of the length of the sawtooth groove of the main sawtooth plate (1).

5. The plastering zigzag grooved plate according to claim 4, characterized in that: The elastic positioning pin (81) comprises a sleeve (811), a spring (813) and a limit block (814); the rear side of the sleeve (811) is fixedly connected to a fixed plate (812); the fixed plate (812) is fixedly connected to the front side of the main L-shaped plate (11) by screws; the spring (813) is fixedly connected to the inside of the sleeve (811); the limit block (814) is fixedly connected to the lower end of the spring (813); the limit block (814) is slidably connected to the inside and below of the sleeve (811); and a limit hole (612) is provided on the upper surface of the square block (61) to match the limit block (814).

6. The plastering zigzag grooved plate according to claim 5, characterized in that: The limiting block (814) is a hemispherical shape.

7. The plastering zigzag grooved plate according to claim 1, characterized in that: The rear side of the main L-shaped plate (11) is fixedly connected to a plurality of groups of T-shaped bars (113), the front side of the auxiliary L-shaped plate (21) is provided with a plurality of groups of T-shaped slots (213) that slide in cooperation with the T-shaped bars (113), the rear side of the auxiliary L-shaped plate (21) is fixedly connected to a plurality of groups of T-shaped bars (214), and the front side of the secondary L-shaped plate (31) is provided with a plurality of groups of T-shaped slots (312) that slide in cooperation with the T-shaped bars (214).

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