A prefabricated cement flue plate production mold and production method

Abstract

The present invention relates to a mold for making a prefabricated cement flue plate and a manufacturing method thereof, comprising a bottom mold, a side mold and a top mold, wherein the side molds are two and the bottoms are hinged to the left and right sides of the bottom mold by hinges, the front and rear ends of the bottom mold are fixed with side frames of rectangular structure, the two side molds are connected by tension bolts passing through the side frames, the upper surface of the bottom mold is fixed with a first positioning square steel arranged near the front and rear ends and along the width direction, the inner surface of the side mold is fixed with a second positioning square steel arranged near the front and rear ends and along the width direction, the inner surface of the side mold is also fixed with a supporting square steel located outside the second positioning square steel and near the upper edge, a top mold supporting tube is placed above the supporting square steel, the front and rear ends of the top mold are placed on the top mold supporting tube, the mold is simple to make, made of materials such as pipes, plates, square steels and the like commonly used on construction sites, the structure is simple and practical, the present invention relates to materials that are easy to purchase locally, mortar can be mixed on site to prefabricate flues, and the cost is economical.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a manufacturing mold and a manufacturing method of a prefabricated cement flue plate. Background Art

[0002] In order to meet the needs of China's expansion and deepening of opening up, China's housing construction in Africa is also expanding. However, Africa does not have a mature construction technology for the prefabrication and installation of flues. The main construction technologies for flues in Cameroon include iron flue technology, masonry flue technology, cement board flue technology, and a comprehensive application of several methods.

[0003] Iron flue process:

[0004] It refers to a construction process of using tinplate materials to make flues, which is to install the prefabricated tinplate into the reserved hole for reinforcement. This construction process generally does not require high use of the house and is fast to install, but the tinplate flue is prone to poor sealing and oil leakage during use, which is difficult to deal with later. In addition, the tinplate material has poor high temperature resistance and corrosion resistance. During use, the owner needs to replace it frequently, which is easy to increase the maintenance costs later.

[0005] Masonry flue technology:

[0006] That is, a construction process of using small hollow brick blocks to build the flue, that is, using on-site prefabricated hollow bricks to build the flue, and then plastering it. This construction method is also the most common construction method in Cameroon. It is resistant to high temperatures and has no oil leakage problems. However, the biggest disadvantage of this process is that it takes up a lot of space and is costly.

[0007] Cement board flue process:

[0008] That is, prefabricate cement slabs in advance, and after the main construction is completed, self-tapping screws are used to connect and assemble them on site. Plastering is done later. This construction method is also a relatively new construction technology in Cameroon. It is light, convenient, and has a low prefabrication cost, but the process is cumbersome, and it is difficult to grasp the verticality during on-site installation. In order to better fit, strict requirements are placed on the details of the prefabricated panels during processing.

[0009] The above three construction technologies each have their own advantages and disadvantages, but none of the three construction technologies can take into account safety, quality, construction period, cost and other issues at the same time. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides a prefabricated cement flue plate production mold and production method.

[0011] A prefabricated cement flue plate production mold, including a bottom mold, a side mold and a top mold that form a rectangular cavity, the side molds are two and the bottoms are hinged to the left and right sides of the bottom mold by hinges, the front and rear ends of the bottom mold are fixed with side frames of rectangular structure, the two side molds are connected by tension bolts passing through the side frames, the upper surface of the bottom mold is fixed with a first positioning square steel close to the front and rear ends and arranged along the width direction, the inner surface of the side mold is fixed with a second positioning square steel close to the front and rear ends and arranged along the width direction, the inner surface of the side mold is also fixed with a supporting square steel located on the outside of the second positioning square steel and close to the upper edge, a top mold support tube is placed above the supporting square steel, and the front and rear ends of the top mold are placed on the top mold support tube.

[0012] Preferably, the top mold includes at least two first top mold component tubes with wider sizes and one second top mold component tube with narrower size, the second top mold component tubes are located in the middle, the first top mold component tubes are distributed on both sides of the second top mold component tube and fit tightly, and the top mold also includes a third positioning square steel whose two ends are connected to the second positioning square steel and can move freely.

[0013] Preferably, the first positioning square steel, the second positioning square steel and the third positioning square steel are all straight square steels with symmetrical ends, the first positioning square steel, the second positioning square steel and the third positioning square steel have the same cross-sectional dimensions and are provided with 45° bevels at both ends.

[0014] Preferably, the bottom mold includes a bottom mold frame and a bottom mold panel, the bottom mold frame is a rectangular frame with a cross brace in the middle, and the bottom mold panel is fixed on the top of the bottom mold frame and has rectangular notches on both sides for avoiding hinges.

[0015] Preferably, the side mold includes a side mold frame and a side mold panel, the side mold frame is a rectangular frame with a cross brace in the middle, and the side mold panel is fixed on the inner side of the side mold frame and has a rectangular notch at the bottom for avoiding the hinge.

[0016] A method for manufacturing a prefabricated cement flue plate, comprising the above-mentioned manufacturing mold, specifically comprises the following steps:

[0017] Step 1, remove the top mold, remove the top mold from the mold and unfold the side molds and lay them flat;

[0018] Step 2: Laminating: Apply a release agent on the inner mold and side mold surface, and then lay a layer of plastic film;

[0019] Step 3, put into the mold, spread cement mortar on the plastic film, smooth the cement mortar with a trowel, and control the thickness of the cement mortar to be half of the height of the first positioning square steel and the second positioning square steel, that is, the surface of the cement mortar is flush with the side center line of the first positioning square steel and the second positioning square steel;

[0020] Step 4: Lay the mesh cloth. After smoothing the cement mortar, lay the fiberglass mesh cloth on the surface of the cement mortar, leaving a certain length on both sides. The reserved length is less than the width of the bottom mold and greater than 1 / 2 of the width of the bottom mold.

[0021] Step 5, spreading the second layer of mortar, continuing to spread cement mortar on the fiberglass mesh cloth, smoothing the cement mortar with a trowel, so that the thickness of the cement mortar is the same as the height of the first positioning square steel and the second positioning square steel, that is, the surface of the cement mortar is flush with the surfaces of the first positioning square steel and the second positioning square steel;

[0022] Step 6: Fold the corners. Use a scraper to press out a corner groove with cement mortar at the joint between the bottom mold and the side mold.

[0023] Step 7: Close the mold. When the strength of the paved cement mortar reaches the initial setting (about three hours), fold the two side molds 90 degrees to close the mold. After closing the mold, use tension bolts to position and reinforce the two side molds.

[0024] Step 8, lay the top form, place the two ends of the top form support pipe on the supporting square steel, and then put the two ends of the top form on the supporting square steel;

[0025] Step 9: Laminating the top mold: Apply a release agent on the top surface of the top mold, and then lay a layer of plastic film;

[0026] Step 10, apply a layer of mortar to the top mold, spread cement mortar on the plastic film above the top mold, smooth the cement mortar with a trowel, and control the thickness of the cement mortar to be half of the height of the third positioning square steel, that is, the surface of the cement mortar is flush with the side center line of the third positioning square steel;

[0027] Step 11, fold the mesh cloth, and fold the reserved fiberglass mesh cloth upward to cover the cement mortar;

[0028] Step 12, apply two coats of mortar to the top mold, continue to spread cement mortar on the fiberglass mesh cloth, and smooth the cement mortar with a trowel to make the thickness of the cement mortar the same as the height of the third positioning square steel, that is, the surface of the cement mortar is flush with the surface of the third positioning square steel;

[0029] Step 13, demoulding;

[0030] Step 14: Maintenance: After the flue is completed, water it and maintain it for seven days.

[0031] Preferably, in step 8, when laying the top mold, first place the two ends of the first top mold component tube on the supporting square steel, and place the first top mold component tube tightly from both sides to the middle in sequence, and then place the second top mold component tube in the gap left by the first top mold component tube, and then place the third positioning square steel to connect the third positioning square steel with the second positioning square steel, and finally place a metal pressing block located on the outside of the third positioning square steel above the top mold.

[0032] Preferably, in step 13, when the strength of the cement mortar reaches 8Mpa or above, the tension bolts are first removed, and then the top mold support tube is taken out, and then the first top mold component tube, the second top mold component tube and the third positioning square steel are removed in turn, and then the side mold is unfolded and the prefabricated cement flue plate finished product is taken out.

[0033] The beneficial effects of the present invention are:

[0034] The production mold of the present invention is easy to make, and is made of materials such as pipes, plates, square steels and the like commonly used on construction sites. The structure is simple and practical, especially the top mold is made of a first top mold component pipe and a second top mold component pipe spliced ​​together, which is convenient for dismantling.

[0035] The mold is provided with a first positioning square steel, a second positioning square steel and a third positioning square steel, which can control the production length of the flue plate and the thickness of the cement paving, and the supporting square steel provides a supporting point and a positioning point for the top mold.

[0036] The present invention can prefabricate cement mortar flues while the main body is being constructed. The mold manufacturing process is simple, the materials involved are easy to purchase locally, and the flue is prefabricated by mixing mortar on site. Therefore, the cost is economical, and the strength of the flue is guaranteed. The on-site assembly is convenient without affecting the plastering construction. It is safe and economical, and the domestic procurement and sea transportation links are omitted, thereby speeding up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0039] Figure 3 for Figure 1 Schematic diagram of the structure when the top mold is removed;

[0040] Figure 4 for Figure 3 Schematic diagram of the structure when the side frame is removed;

[0041] Figure 5 for Figure 3 A top view schematic diagram of

[0042] Figure 6 for Figure 3 A side view schematic diagram of

[0043] Figure 7 for Figure 3 Schematic diagram of the middle side mold when it is unfolded;

[0044] Figure 8 for Figure 4 Schematic diagram of the middle side mold when it is unfolded;

[0045] Fig. 9 for Figure 5 Schematic diagram of the middle side mold when it is unfolded;

[0046] Fig.10 for Fig. 9 Schematic diagram when the bottom mold panel and side mold panel are removed;

[0047] Fig.11 It is the plan view of the bottom mold panel;

[0048] Fig.12 It is a plan view of the side form panel;

[0049] Fig.13 The construction of the present invention is shown in FIG. Figure 1 ;

[0050] Fig.14 The construction of the present invention is shown in FIG. Figure 2 ;

[0051] Fig.15 The construction of the present invention is shown in FIG. Figure 3 ;

[0052] Fig.16 The construction of the present invention is shown in FIG. Figure 4 ;

[0053] Fig.17 The construction of the present invention is shown in FIG. Figure 5 ;

[0054] Fig.18 The construction of the present invention is shown in FIG. Figure 6 ;

[0055] Fig.19 The construction of the present invention is shown in FIG. Figure 7 ;

[0056] Fig. 20 The construction of the present invention is shown in FIG. Figure 8 ;

[0057] Fig.21 The construction of the present invention is shown in FIG. Figure 9 ;

[0058] Fig. 22 Schematic diagram of demoulding of the present invention Figure 1 ;

[0059] Fig.23 Schematic diagram of demoulding of the present invention Figure 2 ;

[0060] Fig.24 Schematic diagram of demoulding of the present invention Figure 3 ;

[0061] Fig.25This is a cross-sectional view of the finished cement flue board;

[0062] In the figure: 1. bottom mold, 1-1. bottom mold frame, 1-2. bottom mold panel, 2. side mold, 2-1. perforation, 2-2. side mold frame, 2-3. side mold panel, 3. side frame, 4. first positioning square steel, 5. second positioning square steel, 6. supporting square steel, 7. fiberglass mesh cloth, 8. angle groove, 9. top mold support tube, 10. first top mold component tube, 11. second top mold component tube, 12. third positioning square steel, 13. tension bolts, 14. finished product. DETAILED DESCRIPTION

[0063] The specific implementation of the present invention is shown in Figure 1-24 :

[0064] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention, wherein the connection of each component adopts a conventional connection method, the top mold and the side mold 2 are welded during production, the top mold and the side mold 2 are connected by a hinge, the top mold is freely spliced, and the various components of the top mold are not fixed, and will not be described in detail here.

[0065] The technical solution of the present invention is:

[0066] A prefabricated cement flue board production mold, such as Figure 1-12 , including a bottom mold 1, a side mold 2 and a top mold that form a rectangular cavity, the side molds 2 are two and the bottoms are hinged to the left and right sides of the bottom mold 1 by hinges, the front and rear ends of the bottom mold 1 are fixed with side frames 3 of rectangular structure, the two side molds 2 are connected by tension bolts 13 passing through the side frames 3, and the edges of the side molds 2 are provided with through holes 2-1 for the tension bolts 13 to pass through, the upper surface of the bottom mold 1 is fixed with a first positioning square steel 4 arranged near the front and rear ends and along the width direction, the inner surface of the side mold 2 is fixed with a second positioning square steel 5 arranged near the front and rear ends and along the width direction, the inner surface of the side mold 2 is also fixed with a supporting square steel 6 located outside the second positioning square steel 5 and near the upper edge, and the supporting square steel 6 is A top mold support tube 9 is placed on the square, and the front and rear ends of the top mold are placed on the top mold support tube 9. The top mold includes at least two first top mold component tubes 10 with wider sizes and a second top mold component tube 11 with narrower sizes. The second top mold component tube 11 is located in the middle, and the first top mold component tube 10 is distributed on both sides of the second top mold component tube 11 and fits tightly. The top mold also includes a third positioning square steel 12 that is connected to the second positioning square steel 5 at both ends and can move freely. The first positioning square steel 4, the second positioning square steel 5, and the third positioning square steel 12 are all straight square steels with symmetrical ends. The cross-sectional dimensions of the first positioning square steel 4, the second positioning square steel 5, and the third positioning square steel 12 are the same and both ends are provided with a 45° chamfer.

[0067] like Figure 3-5, 7-12, the bottom mold 1 includes a bottom mold frame 1-1 and a bottom mold panel 1-2, the bottom mold frame 1-1 is a rectangular frame with a horizontal brace in the middle, the bottom mold panel 1-2 is fixed on the top of the bottom mold frame 1-1 and has rectangular notches on both sides for avoiding hinges, the side mold 2 includes a side mold frame 2-2 and a side mold panel 2-3, the side mold frame 2-2 is a rectangular frame with a horizontal brace in the middle, the side mold panel 2-3 is fixed on the inner side of the side mold frame 2-2 and has a rectangular notch on the bottom for avoiding hinges.

[0068] The specific manufacturing method of the prefabricated cement flue plate of the present invention is:

[0069] Step 1, remove the top mold, such as Fig. 9 , remove the top mold from the mold and unfold the side mold 2 and lay it flat;

[0070] Step 2, laminating, applying a release agent on the surface of the inner mold and the side mold 2, and then laying a layer of plastic film. The release agent facilitates demoulding after the flue is formed, and the plastic film prevents leakage when folded. The cement mortar is covered and cured to quickly reach the design strength;

[0071] Step 3, mold, such as Fig.13 , spread cement mortar on the plastic film, smooth the cement mortar with a trowel, and control the thickness of the cement mortar to be half of the height of the first positioning square steel 4 and the second positioning square steel 5, that is, the surface of the cement mortar is flush with the side center line of the first positioning square steel 4 and the second positioning square steel 5;

[0072] Step 4: Lay out the mesh cloth, such as Fig.14 After smoothing the cement mortar, lay the glass fiber mesh cloth 7 on the surface of the cement mortar, and reserve a certain length on both sides. The reserved length is less than the width of the bottom mold 1 and greater than 1 / 2 of the width of the bottom mold 1. The reserved length of the glass fiber mesh cloth 7 is used as the overlapping length of the top surface in the later stage. Fully laying the glass fiber mesh cloth 7 can effectively prevent the flue from cracking and damage;

[0073] Step 5: Spread the second layer of mortar, such as Fig.15 , continue to spread cement mortar on the glass fiber mesh cloth 7, smooth the cement mortar with a trowel, make the thickness of the cement mortar the same as the height of the first positioning square steel 4 and the second positioning square steel 5, that is, the surface of the cement mortar is flush with the surface of the first positioning square steel 4 and the second positioning square steel 5, ensure that the glass fiber mesh cloth 7 is in the middle layer of the flue wall, and can effectively prevent the flue wall from cracking;

[0074] Step 6, fold the corners, such as Fig.16 , use a scraper to press out a corner groove 8 with cement mortar at the joint between the bottom mold 1 and the side mold 2 to facilitate the corner folding when closing the mold;

[0075] Step 7, close the mold, such as Figure 3 , 517. When the strength of the paved cement mortar reaches the initial setting (about three hours), fold the two side molds 2 by 90 degrees to close the mold. After closing the mold, use the tension bolts 13 to position and reinforce the two side molds 2.

[0076] Step 8: Lay the top mold, such as Figure 1 , 2 18, place the two ends of the top mold support tube 9 on the supporting square steel 6, then put the two ends of the first top mold component tube 10 on the supporting square steel 6, and place the first top mold component tube 10 closely from both sides to the middle in sequence, and finally place the second top mold component tube 11 in the gap left by the first top mold component tube 10, place the third positioning square steel 12, connect the third positioning square steel 12 with the second positioning square steel 5, and place a metal pressing block located on the outside of the third positioning square steel 12 above the top mold;

[0077] Step 9: Laminating the top mold: Apply a release agent on the top surface of the top mold, and then lay a layer of plastic film;

[0078] Step 10: Apply a layer of mortar to the top mold. Fig.19 , spread cement mortar on the plastic film above the top mold, smooth the cement mortar with a trowel, and control the thickness of the cement mortar to be half of the height of the third positioning square steel 12, that is, the surface of the cement mortar is flush with the side center line of the third positioning square steel 12;

[0079] Step 11, fold the mesh cloth, such as Fig. 20 , fold the reserved glass fiber mesh cloth 7 upwards to cover the cement mortar;

[0080] Step 12: Apply two coats of mortar to the top mold. Fig.21 , continue to spread cement mortar on the glass fiber mesh cloth 7, and smooth the cement mortar with a trowel, so that the thickness of the cement mortar is the same as the height of the third positioning square steel 12, that is, the surface of the cement mortar is flush with the surface of the third positioning square steel 12;

[0081] Step 13, demoulding, such as Figure 22-25 After 12 hours, when the cement mortar strength reaches 8Mpa or above, first remove the tension bolts 13, then take out the top mold support pipe 9, then take out the first top mold component pipe 10, the second top mold component pipe 11 and the third positioning square steel 12 in turn, then unfold the side mold 2, and take out the prefabricated cement flue plate finished product 14;

[0082] Step 14, curing, after the cement flue plate finished product 14 is manufactured, it is watered and cured for seven days.

[0083] The above method can be used to make cement flue boards of different specifications, using molds of different sizes, with a size of 300mm*400 mm*1600 mm and a cement flue plate with a wall thickness of 10mm as an example, the overall length of the bottom mold 1, the side mold 2 and the top mold is 1800mm, the width of the bottom mold 1 is 400mm, the width of the side mold 2 is 300mm, the specifications of the first positioning square steel 4, the second positioning square steel 5 and the third party steel are 10mm*10mm, the distance between the inner surface of the first positioning square steel 4 and the second positioning square steel 5 and the front and rear ends of the bottom mold 1 and the side mold 2 is 100mm, the distance from the upper surface of the supporting square steel 6 to the upper edge of the side mold 2 is 80mm, the top mold support tube 9 is a 35mm*35mm square tube, the first top mold component tube 10 is a 70mm*35mm rectangular tube, the second top mold component tube 11 is a 35mm*30mm rectangular tube, the bottom mold frame 1-1, the side mold frame 2-2 and the side frame 3 are all welded with 35mm*35mm square tubes, and the bottom mold panel 1-2 and the side mold panel 2-3 are made of 2mm thick steel plates.

[0084] The present invention can prefabricate the cement mortar flue while the main body is being constructed. The mold manufacturing process is simple, the materials involved are easy to purchase locally, and the flue is prefabricated by mixing the mortar on site, so the cost is economical. At the same time, the strength of the flue is guaranteed, and on-site assembly is convenient without affecting the plastering construction. It is safe and economical and eliminates the domestic procurement and sea transportation links, thereby speeding up the construction progress.

Claims

1. A method for manufacturing a prefabricated cement flue plate, characterized in that: The following steps are involved: Step 1, remove the top mold, remove the top mold from the mold and unfold the side molds and lay them flat; Step 2: Laminating: Apply a release agent on the inner mold and side mold surface, and then lay a layer of plastic film; Step 3, put into the mold, spread cement mortar on the plastic film, smooth the cement mortar with a trowel, and control the thickness of the cement mortar to be half of the height of the first positioning square steel and the second positioning square steel, that is, the surface of the cement mortar is flush with the side center line of the first positioning square steel and the second positioning square steel; Step 4: Lay the mesh cloth. After smoothing the cement mortar, lay the fiberglass mesh cloth on the surface of the cement mortar, leaving a certain length on both sides. The reserved length is less than the width of the bottom mold and greater than 1 / 2 of the width of the bottom mold. Step 5, spreading the second layer of mortar, continuing to spread cement mortar on the fiberglass mesh cloth, smoothing the cement mortar with a trowel, so that the thickness of the cement mortar is the same as the height of the first positioning square steel and the second positioning square steel, that is, the surface of the cement mortar is flush with the surfaces of the first positioning square steel and the second positioning square steel; Step 6: Fold the corners. Use a scraper to press out a corner groove with cement mortar at the joint between the bottom mold and the side mold. Step 7: Close the mold. When the strength of the paved cement mortar reaches the initial setting, fold the two side molds 90 degrees to close the mold. After closing the mold, use tension bolts to position and reinforce the two side molds. Step 8, lay the top form, place the two ends of the top form support pipe on the supporting square steel, and then put the two ends of the top form on the supporting square steel; Step 9: Laminating the top mold: Apply a release agent on the top surface of the top mold, and then lay a layer of plastic film; Step 10, apply a layer of mortar to the top mold, spread cement mortar on the plastic film above the top mold, smooth the cement mortar with a trowel, and control the thickness of the cement mortar to be half of the height of the third positioning square steel, that is, the surface of the cement mortar is flush with the side center line of the third positioning square steel; Step 11, fold the mesh cloth, and fold the reserved fiberglass mesh cloth upward to cover the cement mortar; Step 12, apply two coats of mortar to the top mold, continue to spread cement mortar on the fiberglass mesh cloth, and smooth the cement mortar with a trowel to make the thickness of the cement mortar the same as the height of the third positioning square steel, that is, the surface of the cement mortar is flush with the surface of the third positioning square steel; Step 13, demoulding; Step 14, maintenance, after the flue is completed, sprinkle water for seven days; The prefabricated cement flue plate production mold used in the above method includes a bottom mold, a side mold and a top mold that form a rectangular cavity. The side molds are two and the bottoms are hinged to the left and right sides of the bottom mold by hinges. The front and rear ends of the bottom mold are fixed with side frames of rectangular structure. The two side molds are connected by tension bolts passing through the side frames. The upper surface of the bottom mold is fixed with a first positioning square steel close to the front and rear ends and arranged along the width direction. The inner surface of the side mold is fixed with a second positioning square steel close to the front and rear ends and arranged along the width direction. The inner surface of the side mold is also fixed with a supporting square steel located on the outside of the second positioning square steel and close to the upper edge. A top mold support tube is placed above the supporting square steel, and the front and rear ends of the top mold are placed on the top mold support tube.

2. The method for manufacturing a prefabricated cement flue plate according to claim 1, characterized in that: The top mold includes at least two first top mold component tubes with wider sizes and one second top mold component tube with narrower size, the second top mold component tube is located in the middle, the first top mold component tube is distributed on both sides of the second top mold component tube and fits tightly, and the top mold also includes a third positioning square steel with both ends connected to the second positioning square steel and can move freely.

3. The method for manufacturing a prefabricated cement flue plate according to claim 2, characterized in that: The first positioning square steel, the second positioning square steel and the third positioning square steel are all straight square steels with symmetrical ends. The first positioning square steel, the second positioning square steel and the third positioning square steel have the same cross-sectional dimensions and are provided with 45° inclined surfaces at both ends.

4. The method for manufacturing a prefabricated cement flue plate according to claim 3, characterized in that: The bottom mold comprises a bottom mold frame and a bottom mold panel. The bottom mold frame is a rectangular frame with a cross brace in the middle. The bottom mold panel is fixed on the top of the bottom mold frame and has rectangular notches on both sides for avoiding hinges.

5. The method for manufacturing a prefabricated cement flue plate according to claim 4, characterized in that: The side mold includes a side mold frame and a side mold panel. The side mold frame is a rectangular frame with a cross brace in the middle. The side mold panel is fixed on the inner side of the side mold frame and has a rectangular notch at the bottom for avoiding hinges.

6. The method for manufacturing a prefabricated cement flue plate according to claim 1, characterized in that: In step 8, when laying the top mold, first put the two ends of the first top mold component tube on the supporting square steel, and place the first top mold component tube tightly from both sides to the middle in sequence, and then place the second top mold component tube in the gap left by the first top mold component tube, and then place the third positioning square steel to connect the third positioning square steel with the second positioning square steel, and finally place the metal pressing block located on the outside of the third positioning square steel above the top mold.

7. The method for manufacturing a prefabricated cement flue plate according to claim 6, characterized in that: In step 13, when the strength of the cement mortar reaches 8Mpa or above, the tension bolts are first removed, and then the top mold support tube is taken out, and then the first top mold component tube, the second top mold component tube and the third positioning square steel are removed in turn, and then the side mold is unfolded and the prefabricated cement flue plate finished product is taken out.

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