Adjustable size building lightweight concrete precast panel preparation mold and its using method

Abstract

The application relates to a size-adjustable building light-weight concrete prefabricated slab preparation mold and a use method thereof. The mold comprises a bottom mold plate, an inner mold frame assembly and an outer mold frame assembly. The outer mold frame assembly comprises a long mold plate and two symmetrically arranged wide mold plates. The long mold plate and the two wide mold plates are respectively vertically fixed to the long side and the two wide sides of the bottom mold plate. The inner mold frame assembly comprises a movable long mold plate and a movable wide mold plate. The movable long mold plate is formed to be slidably adjusted along the width direction of the bottom mold plate, and the movable long mold plate is formed to be planarly attached to the two wide mold plates and the bottom mold plate when sliding. The movable wide mold plate is formed to be slidably adjusted along the length direction of the bottom mold plate, and the movable wide mold plate is formed to be planarly attached to the movable long mold plate, the long mold plate and the bottom mold plate when sliding. Locking members for locking relative sliding are arranged between the two ends of the movable long mold plate and the corresponding wide mold plates, and between the two ends of the movable wide mold plate and the corresponding long mold plate and the movable long mold plate. The size adjustment of the mold is realized, and the mold is suitable for manufacturing prefabricated slabs of different specifications and is relatively convenient and efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building board molds, and is a size-adjustable building lightweight concrete prefabricated board preparation mold and a use method thereof. BACKGROUND

[0002] Existing building lightweight concrete prefabricated boards, such as ceramsite boards, are building boards made of cement with ceramsite as coarse aggregate and ordinary sand or ceramic sand as fine aggregate, which have the advantages of light weight, high hardness, good crack resistance and thermal insulation, and have been widely used in wallboards or floorboards of existing buildings. The production and processing of existing ceramsite boards usually involves pouring and making in cooperation with molds, that is, according to the size of the ceramsite board, a mold with a size corresponding to the size of the mold frame is pre-made, then steel bars are placed in the mold and the pouring material is poured to form the ceramsite board. For example, the patent document CN219486061U, published on August 8, 2023, with the utility model name "ceramsite board forming mold convenient for demolding", discloses a structure in which the bottom plate, the partition plate and the baffle can be automatically separated and closed, thereby facilitating the molding and demolding operations. However, such ceramsite board molds are usually fixed in size, and one mold can only correspond to one size of ceramsite board, which results in the need for different sizes of molds for different sizes of ceramsite boards, which is a considerable investment in molds, and the assembly and use of the molds are usually more cumbersome, requiring the installation of the frame plate and the bottom mold plate one by one, which is obviously a large amount of work and low production efficiency. Therefore, it is necessary to improve the existing ceramsite board mold and its use method. SUMMARY

[0003] To overcome the above-mentioned shortcomings, the purpose of the present application is to provide a size-adjustable building lightweight concrete prefabricated board preparation mold and a use method thereof in the field, which solves the technical problems of the existing similar molds with single size specification, inability to adjust, high investment cost, cumbersome mold assembly and demolding operation, large amount of work and low prefabricated board production efficiency. The purpose is achieved through the following technical solutions.

[0004] The application discloses a preparation mold for a size-adjustable building light-weight concrete prefabricated slab, and the mold comprises a bottom mold plate and a mold frame, and the structure is characterized in that the mold frame comprises an inner mold frame assembly and an outer mold frame assembly, the outer mold frame assembly comprises a long mold plate and two symmetrically arranged wide mold plates, the long mold plate is vertically and sealingly fixed to corresponding long edges of the bottom mold plate, the two wide mold plates are respectively vertically and sealingly fixed to two side wide edges of the bottom mold plate, and the long mold plate is sealingly fixed at right angles with the two side wide mold plates at both ends; the inner mold frame assembly comprises a movable long mold plate and a movable wide mold plate, the long mold plate, the wide mold plate, the movable long mold plate and the movable wide mold plate are all rectangular plates, the movable long mold plate is parallel to the long mold plate, both ends of the movable long mold plate are slidingly matched with the two side wide mold plates of the bottom mold plate, that is, the movable long mold plate is slidingly adjusted along the width direction of the bottom mold plate, and the movable long mold plate is slidingly and sealingly matched with the two side wide mold plates and the bottom mold plate; the movable wide mold plate is parallel to the wide mold plate, both ends of the movable wide mold plate are slidingly and detachably matched with the long mold plate and the movable long mold plate, the movable wide mold plate is slidingly adjusted along the length direction of the bottom mold plate, and the movable wide mold plate is slidingly and sealingly matched with the movable long mold plate, the long mold plate and the bottom mold plate; locking members A for locking the movable long mold plate are arranged between both ends of the movable long mold plate and corresponding wide mold plates, and locking members B for locking the movable wide mold plate are arranged between both ends of the movable wide mold plate and corresponding long mold plates and movable long mold plates. Through the above structure, the relatively movable inner mold frame assembly is arranged in the fixed outer mold frame assembly, so that the mold frame structure required according to the size of the actual prefabricated slab can be adjusted, the size specification is adjustable, and the mold mounting and demolding are relatively convenient. Moreover, the mold only needs to be equipped with the movable wide mold plate with a corresponding size, and other mold plates can be shared, so that the cost of mold manufacturing is effectively reduced.

[0005] The active wide template comprises a left template, a middle plate, a right template and at least one lengthening template, the left template and the right template are symmetrically arranged, that is, the left template slides relative to the active long template, the right template slides relative to the long template, the middle plate is arranged between the left template and the right template in a telescopic and limited manner, that is, the left template and the right template are stretched and adjusted through the middle plate, and the direction of the stretching and adjusting corresponds to the width direction of the bottom template; in an initial state, the middle plate is inserted into the left template and the right template and is not exposed, and the opposite surfaces of the left template and the right template are tightly abutted to form a seal; when the left template and the right template are stretched to an elongated state, the middle plate is exposed between the left template and the right template, the lengthening template is provided with a U-shaped opening nested with the middle plate, and when the lengthening template is sleeved on the middle plate, the two ends of the lengthening template are aligned with and connected to the left template and the right template; when the left template and the right template clamp the lengthening template, the left template, the lengthening template and the right template are tightly abutted to form a seal, that is, a complete active wide template is formed. Through the structure, the length of the active wide template is adjusted, that is, the active wide template can be adaptively stretched and adjusted when the active wide template is adjusted by sliding the active long template, so as to correspond to the width size of the prefabricated plate, and the gap between the left template and the right template after the stretching and adjusting of the left template and the right template is filled and connected by one or more lengthening templates of a unit structure, so as to form a complete active template frame, which is convenient to adjust and use and has a wide application range.

[0006] The two ends of the active long template are formed with notches A which are open downward and are slidably connected to the corresponding wide templates, and the two ends of the active wide template are formed with notches B which are open downward and are slidably connected to the corresponding long templates and active long templates. Through the structure, the active long template is quickly installed and slidably adjusted relative to the two wide templates, and the active wide template is quickly installed and slidably adjusted relative to the active long template and the long template.

[0007] The locking pieces A and B are cams with handles, the two ends of the active long template and the two ends of the active wide template are provided with the cams, when the cams at the two ends of the active long template are rotated to a position, the cam surfaces are tightly locked with the outer sides of the corresponding wide templates, and when the cams at the two ends of the active wide template are rotated to a position, the cam surfaces are tightly locked with the outer sides of the corresponding active long template and long template. Through the structure, the sliding and locking operations of the active long template and the active wide template are more convenient and fast.

[0008] The surfaces of the left template, the lengthening template and the right template which abut against each other form concave-convex surface abutments. Through the structure, the left template, the lengthening template and the right template are reliably aligned, and the template surface of the active wide template is more flat.

[0009] The left template and the right template are each composed of two symmetrical half templates, and a sliding hole adapted to the sliding of the middle plate and a limiting sliding groove limiting the sliding of the middle plate are arranged between the two symmetrical half templates, and the two ends of the middle plate are each provided with a limiting sliding block in sliding cooperation with the limiting sliding groove, that is, the middle plate is limited between the two half templates when the two half templates are fixed. Through the structure, the manufacturing and installation of the wide template are facilitated.

[0010] The mold comprises a manual and / or electric screw mechanism fixed relative to the bottom template, the middle part of the movable long template is provided with a screw hole, the screw rod of the manual and / or electric screw mechanism cooperates with the screw hole of the movable long template to form a screw rod transmission, and the movable long template is driven to slide along the width direction relative to the bottom template during the screw rod transmission, and the other end of the screw rod is rotationally positioned in the middle part of the long template. Through the structure, the sliding adjustment operation of the auxiliary movable long template is facilitated, and the use is more labor-saving and efficient.

[0011] The long template, the wide template and the movable long template are each provided with a scale indicating the length dimension. Through the structure, the size control of the mold is facilitated.

[0012] Based on the above-mentioned movable mold frame of the specific size specification, the use method of the adjustable size building lightweight concrete prefabricated slab preparation mold is as follows: first, according to the width of the prefabricated slab to be manufactured, the sliding position of the movable long template relative to the two wide templates is adjusted, and after the adjustment is completed, the movable long template is fixed by the locking piece A, and the distance between the movable long template and the long template is the width of the prefabricated slab; next, at least two movable wide templates corresponding to the width dimension of the prefabricated slab are selected, and the movable wide templates are installed at the two ends of the movable long template and the long template to form relative sliding, the sliding position of the movable wide template is adjusted to form the distance of the length of the prefabricated slab between the adjacent movable wide templates, and after the adjustment of each movable wide template is completed, the movable wide template is locked and fixed by the locking piece B, and the above movable long template, movable wide template and long template form the pouring frame of the prefabricated slab with the shared bottom template, and the pouring of the pouring material into the pouring frame can form the prefabricated slab; after the prefabricated slab is formed, the locking of the locking piece A and the locking piece B is released, the movable wide template is removed or slid, and the movable long template is slid, so that the mold is demolded, the prefabricated slab is removed, and the manufacturing is completed.

[0013] Based on the above activity module frame set to length adjustment, the use method of the adjustable size building lightweight concrete prefabricated slab preparation mold is that: the two ends of the movable long template are slidably arranged on the two sides of the wide template, at least two movable wide templates are taken, the two ends of each movable wide template are slidably arranged on the two sides of the movable long template and the long template, each movable wide template is slidably adjusted to form a spacing with the adjacent movable wide template, and then the two ends of the movable wide template are fixed with the movable long template and the long template through the locking piece B; after being fixed, the stretching length of the movable wide template is adjusted according to the width size of the prefabricated slab, that is, the left template and the right template in each movable wide template form relative stretching movement by adjusting the sliding of the movable long template relative to the two sides of the wide template, the middle plate of the movable wide template is exposed, the exposed middle plate is connected with at least one fixed-length supplemental template to complete the butt joint of the gap between the left template and the right template, and after the butt joint, a pushing force is applied to the movable long template, so that the left template, the supplemental template and the right template in each movable wide template are tightly arranged, in this state, the two ends of the movable long template are fixed with the two sides of the wide template through the locking piece A, and the pouring frame of the prefabricated slab is formed between the movable long template, the movable wide template, the long template and the shared bottom template, and the pouring frame is poured with pouring material to form the prefabricated slab; after the prefabricated slab is formed, the locking of the locking piece A and the locking piece B is released, the movable wide template is removed or slid, and the movable long template is slid, so that the mold is demolded, the prefabricated slab is removed, and the manufacturing is completed.

[0014] The fixed template and the movable template are used in combination in the present application, most of the mold adopts fixed specification size, and only part of the mold adopts replacement or size adjustment, so that the investment cost of the mold is effectively reduced. In addition, the size of the mold frame is adjusted by sliding the template, so that the prefabricated slab of different specifications can be manufactured, the mold loading and demolding operations are convenient and efficient, and the mold is suitable for being used as a building prefabricated slab, or the mold structure and the use method are improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a partial structure diagram of the present application.

[0016] Figure 2 is Figure 1 is an assembly structure diagram of the movable wide template in the present application.

[0017] Figure 3 is Figure 2 is a structure diagram after assembly.

[0018] Figure 4 is a structure diagram of the first embodiment of the present application.

[0019] Figure 5 is a structure diagram of the second embodiment of the present application.

[0020] The figure sequence number and name are: 1, bottom template, 2, long template, 3, wide template, 4, movable long template, 401, notch A, 402, screw hole, 5, locking piece A, 6, movable wide template, 601, left template, 602, middle plate, 603, right template, 604, length supplement template, 605, limiting sliding groove, 606, limiting sliding block, 607, notch B, 7, locking piece B, 8, cam, 9, screw rod. Embodiment

[0021] The application will be further described in conjunction with the drawings.

[0022] As Figures 1-3 shown, the adjustable size building lightweight concrete prefabricated slab preparation mold includes a bottom template 1 and a mold frame, the mold frame includes an inner mold frame assembly and an outer mold frame assembly, the outer mold frame assembly includes a long template 2 and two symmetrically arranged wide templates 3, the long template is vertically sealed and fixed to one side of the long template through a screw fitting sealing piece, and the two wide templates are respectively vertically fixed to the two wide sides of the bottom template through screw fitting sealing pieces, and the long template is fixed to form a right angle seal through screw fitting sealing pieces at both ends and both sides of the wide template. The inner mold frame assembly includes a movable long template 4 and a movable wide template 6, the long template, the wide template, the movable long template and the movable wide template are all rectangular plates, the movable long template is parallel to the long template, and the movable long template is in sliding fit with the wide templates on both sides of the bottom template at both ends, that is, the movable long template forms a notch A at both ends, which is open downward and in sliding fit with the corresponding wide template, so as to realize sliding adjustment of the movable long template along the width direction of the bottom template, and the movable long template forms a planar sliding seal with the wide templates on both sides and the bottom template when sliding, that is, a sealing piece is fixedly arranged on the bottom side of the movable long template. The movable wide template is parallel to the wide template, and the movable wide template is in detachable sliding fit with the long template and the movable long template at both ends, that is, the movable wide template forms a notch B at both ends, which is open downward and in sliding fit with the corresponding long template and movable long template, so as to realize sliding adjustment of the movable wide template along the length direction of the bottom template, and the movable wide template forms a planar sliding seal with the movable long template, the long template and the bottom template when sliding, that is, a sealing piece is fixedly arranged on the bottom side of the movable wide template. The two ends of the movable long template and the corresponding wide template are provided with locking pieces A 5 for locking the relative sliding of the movable long template, and the two ends of the movable wide template and the corresponding long template and movable long template are provided with locking pieces B 7 for locking the relative sliding of the movable wide template. The locking pieces A and B are cams with handles, and the two ends of the movable long template and the two ends of the movable wide template are provided with cams for positioning and rotating, when the cams at both ends of the movable long template are rotated in place, the cam surfaces are tightly locked with the outer sides of the corresponding wide templates, and when the cams at both ends of the movable wide template are rotated in place, the cam surfaces are tightly locked with the outer sides of the corresponding movable long template and long template.

[0023] The movable wide template 6 is provided with adjustable length, and the specific structure is as follows: the movable wide template comprises a left template 601, an intermediate plate 602, a right template 603 and at least one length supplementing template 604. The left template and the right template are symmetrically arranged, that is, the left template slides relative to the movable long template 4, the right template slides relative to the long template 2, and the intermediate plate is arranged between the left template and the right template in a telescopic and limiting manner. That is, the left template and the right template are stretched and adjusted through the intermediate plate, and the direction of the stretching and adjusting corresponds to the width direction of the bottom template. In the initial state, the intermediate plate is inserted into the left template and the right template and is not exposed, the opposite surfaces of the left template and the right template are provided with sealing members and are tightly arranged to form a seal, and the bottom side of the left template, the right template and the intermediate plate is fixedly provided with a sealing member which forms a sliding seal with the bottom template. When the left template and the right template are stretched to an elongated state, the intermediate plate is exposed between the left template and the right template. The length supplementing template is provided with a U-shaped opening which is nested with the intermediate plate, and when the length supplementing template is sleeved on the intermediate plate, the two ends of the length supplementing template are aligned with the left template and the right template. When the left template and the right template clamp the length supplementing template, the left template, the length supplementing template and the right template are tightly arranged to form a seal, that is, a complete movable wide template is formed. In order to make the left template, the length supplementing template and the right template be in alignment after being positioned, the surfaces of the left template, the length supplementing template and the right template which are mutually connected are formed as concave-convex surfaces.

[0024] In order to facilitate the installation and use of the movable wide template, the left template 601 and the right template 603 are each composed of two symmetrical half templates, and a sliding hole which is suitable for the sliding of the intermediate plate 603 and a limiting sliding groove 605 which limits the sliding of the intermediate plate are arranged between the two symmetrical half templates. The two ends of the intermediate plate are each provided with a limiting sliding block 606 which is in sliding cooperation with the limiting sliding groove, that is, the intermediate plate is limited between the two half templates when the two half templates are fixed.

[0025] In order to facilitate the sliding and adjusting operation of the movable long template 4, the mold comprises a manual and / or electric screw mechanism which is fixed relative to the bottom template. The middle part of the movable long template 4 is provided with a screw hole 401, and the screw rod 9 of the manual and / or electric screw mechanism is in cooperation with the screw hole of the movable long template to form a screw rod transmission. When the screw rod is in transmission, the movable long template is driven to slide along the width direction relative to the bottom template, and the other end of the screw rod is rotationally positioned in the middle part of the long template 2.

[0026] In order to facilitate more intuitive and accurate operation of the adjusting position of the movable long template 4 and the wide template 6, the long template 2, the wide template 3 and the movable long template 4 are each provided with a scale which indicates the length dimension.

[0027] As Figure 4As shown, when the active long template adopts the fixed length scheme, the use method of the adjustable size building lightweight concrete prefabricated slab preparation mold is: first, according to the width of the prefabricated slab to be made, adjust the sliding position of the active long template 4 relative to the two side wide templates 3, and fix the active long template after adjusting in place through the locking piece A5. The distance between the active long template and the long template 2 is the width of the prefabricated slab; Next, select at least two active wide templates 6 corresponding to the width size of the prefabricated slab, and install the two ends of the active wide template to the active long template and the long template to form relative sliding, adjust the sliding position of the active wide template to form the length of the prefabricated slab between the adjacent active wide templates, and lock and fix each active wide template after adjusting in place through the locking piece B7. The above active long template, active wide template, long template and shared bottom template form a pouring frame of the prefabricated slab, and pouring the pouring material into the pouring frame can form the prefabricated slab; After the prefabricated slab is formed, the locking of the locking piece A and the locking piece B is released, the active wide template is removed or slid, and the active long template is slid, so that the mold is demolded, the prefabricated slab is removed, and the manufacturing is completed.

[0028] As shown in the Figure 5 As shown, when the active long template adopts the fixed length scheme, the use method of the adjustable size building lightweight concrete prefabricated slab preparation mold is: first, according to the width of the prefabricated slab to be made, adjust the sliding position of the active long template 4 relative to the two side wide templates 3, and fix the active long template after adjusting in place through the locking piece A5. The distance between the active long template and the long template 2 is the width of the prefabricated slab; Next, select at least two active wide templates 6 corresponding to the width size of the prefabricated slab, and install the two ends of the active wide template to the active long template and the long template to form relative sliding, adjust the sliding position of the active wide template to form the length of the prefabricated slab between the adjacent active wide templates, and lock and fix each active wide template after adjusting in place through the locking piece B7. The above active long template, active wide template, long template and shared bottom template form a pouring frame of the prefabricated slab, and pouring the pouring material into the pouring frame can form the prefabricated slab; After the prefabricated slab is formed, the locking of the locking piece A and the locking piece B is released, the active wide template is removed or slid, and the active long template is slid, so that the mold is demolded, the prefabricated slab is removed, and the manufacturing is completed.

[0029] In the above structural scheme, the bottom template 1, the long mold frame 2, the wide template 3, the movable long template 4 and the movable wide template 6 are not limited in size and the shape of the template surface, that is, different sizes can be selected according to actual production needs, so as to be suitable for forming prefabricated plates of different sizes and volumes, and through the concave-convex design of the template surface, the prefabricated plate also has a concave-convex alignment structure when formed, meeting the actual prefabricated plate installation and use requirements.

[0030] The above is intended to illustrate the technical means of the present application, not to limit the technical scope of the present application. Those skilled in the art can make obvious improvements or replacements to the present application in combination with the existing common knowledge, which also falls within the protection scope of the claims of the present application.

Claims

1. A mold for the production of dimensionally adjustable prefabricated building lightweight concrete panels, comprising a bottom mold plate (1) and a mold frame, characterized in that The mold frame comprises an inner mold frame assembly and an outer mold frame assembly, the outer mold frame assembly comprises a long mold plate (2) and two symmetrically arranged wide mold plates (3), the long mold plate is vertically and sealingly fixed to one side long edge of the bottom mold plate, the two wide mold plates are respectively vertically and sealingly fixed to the two side wide edges of the bottom mold plate, and the long mold plate is sealingly fixed at right angles with the two side wide mold plates at both ends; the inner mold frame assembly comprises a movable long mold plate (4) and a movable wide mold plate (6), the long mold plate, the wide mold plate, the movable long mold plate and the movable wide mold plate are all rectangular plates, the movable long mold plate is parallel to the long mold plate, the two ends of the movable long mold plate are slidingly matched with the two side wide mold plates of the bottom mold plate, that is, the movable long mold plate is slidingly adjusted along the width direction of the bottom mold plate, and the movable long mold plate forms planar sliding sealing with the two side wide mold plates and the bottom mold plate when sliding; the movable wide mold plate is parallel to the wide mold plate, the two ends of the movable wide mold plate are respectively slidingly matched with the long mold plate and the movable long mold plate in a detachable manner, the movable wide mold plate is slidingly adjusted along the length direction of the bottom mold plate, and the movable wide mold plate forms planar sliding sealing with the movable long mold plate, the long mold plate and the bottom mold plate when sliding; the two ends of the movable long mold plate are provided with locking members A (5) for locking the relative sliding of the movable long mold plate, and the two ends of the movable wide mold plate are provided with locking members B (7) for locking the relative sliding of the movable wide mold plate; the movable wide mold plate comprises a left mold plate (601), an intermediate plate (602), a right mold plate (603) and at least one lengthening mold plate (604), the left mold plate and the right mold plate are symmetrically arranged, that is, the left mold plate slides relative to the movable long mold plate, the right mold plate slides relative to the long mold plate, and the intermediate plate is provided between the left mold plate and the right mold plate for telescopic and position-limiting cooperation, that is, the left mold plate and the right mold plate are telescopically adjusted through the intermediate plate, and the telescopic adjustment direction corresponds to the width direction of the bottom mold plate; in the initial state, the intermediate plate is inserted into the left mold plate and the right mold plate and is not exposed, and the opposite surfaces of the left mold plate and the right mold plate abut tightly to form sealing; when the left mold plate and the right mold plate are stretched to an elongated state, the intermediate plate is exposed between the left mold plate and the right mold plate, the lengthening mold plate is provided with a U-shaped opening for nested cooperation with the intermediate plate, and when the lengthening mold plate is sleeved on the intermediate plate, the two ends of the lengthening mold plate are aligned with the left mold plate and the right mold plate, and when the left mold plate and the right mold plate clamp the lengthening mold plate, the left mold plate, the lengthening mold plate and the right mold plate abut tightly with each other to form sealing, that is, the complete movable wide mold plate is formed.

2. The adjustable size mold for the production of prefabricated panels of lightweight concrete for building according to claim 1, characterized in that The two ends of the movable long mold plate (4) are formed with notches A (401) which are downwardly opened and slidingly matched with the corresponding wide mold plates (3), and the two ends of the movable wide mold plate (6) are formed with notches B (607) which are downwardly opened and slidingly matched with the corresponding long mold plate and movable long mold plate.

3. The adjustable size mold for the production of prefabricated panels of lightweight concrete for building according to claim 1, characterized in that The locking member A (5) and the locking member B (7) are both cam (8) with handle, both ends of the movable long template (4) and both ends of the movable wide template (6) are provided with the cam, when the cam at both ends of the movable long template is rotated to the position, the cam surface is locked against the outside surface of the corresponding wide template (3), when the cam at both ends of the movable wide template is rotated to the position, the cam surface is locked against the outside surface of the corresponding movable long template and long template (2).

4. The modular formwork for the production of prefabricated panels of lightweight concrete for building according to claim 1, characterized in that The mutually butting surfaces of the left template (601), the length supplementing template (604) and the right template (603) form concave-convex surface butt joint.

5. The modular formwork for the production of prefabricated panels of lightweight concrete for building according to claim 1, characterized in that The left template (601) and the right template (603) are each composed of two symmetrical half templates, and the two symmetrical half templates are provided with a sliding hole adapted to the sliding of the intermediate plate and a limiting sliding groove (605) limiting the sliding of the intermediate plate, both ends of the intermediate plate are provided with a limiting sliding block (606) slidingly matched with the limiting sliding groove, that is, the intermediate plate is limited between the two half templates when the two half templates are fixed.

6. The modular formwork for the production of prefabricated panels of lightweight concrete for building according to any one of claims 1-3, characterized in that The mold comprises a manual and / or electric screw mechanism fixed relative to the bottom template (1), the middle part of the movable long template (4) is provided with a screw hole (402), the screw rod (9) of the manual and / or electric screw mechanism is matched with the screw hole of the movable long template to form screw rod transmission, and the screw rod transmission drives the movable long template to slide relative to the bottom template along the width direction, and the other end of the screw rod is rotationally positioned in the middle part of the long template (2).

7. The modular formwork for the production of prefabricated panels of lightweight concrete for building according to any one of claims 1-3, characterized in that The long template (2), the wide template (3) and the movable long template (4) are all provided with a scale indicating length dimension.

8. A method of using a mold for producing a size-adjustable building lightweight concrete precast panel according to claim 1, characterized in that: Firstly, the sliding position of the movable long template (4) relative to the wide templates (3) on both sides is adjusted according to the width of the ceramic board to be made, and the movable long template is fixed by the locking member A (5) after the adjustment is completed, and the distance between the movable long template and the long template (2) is the width of the precast board; Next, at least two movable wide templates (6) corresponding to the width dimension of the precast board are selected, and the movable wide templates are respectively installed to the movable long template (4) and the long template (2) and form relative sliding, the sliding position of the movable wide template is adjusted to form the distance of the length of the precast board between adjacent movable wide templates, and each movable wide template is locked and fixed by the locking member B (7) after the adjustment is completed, and the movable long template, the movable wide template, the long template and the shared bottom template (1) form the pouring frame of the precast board, and the pouring of the pouring material into the pouring frame can form the precast board; After the precast board is formed, the locking of the locking member A and the locking member B is released, the movable wide template is removed or slid, and the movable long template is slid, so that the mold is removed, and the ceramic board is removed to complete the production.

9. A method of using a mold for producing a size-adjustable building lightweight concrete prefabricated panel according to claim 1, characterized in that The movable long template (4) is slidably arranged at both ends of the wide template (3), at least two movable wide templates (6) are taken, both ends of each movable wide template are slidably arranged at both sides of the movable long template and the long template (2), each movable wide template is slidably adjusted to a spacing of a length of the precast slab between adjacent movable wide templates, and then both ends of the movable wide template are fixed with the movable long template and the long template through the locking member B (7); after being fixed, the stretching length of the movable wide template is adjusted according to the width size of the precast slab, that is, the left template (601) and the right template (603) in each movable wide template are formed to have relative stretching movement by adjusting the sliding of the movable long template relative to the wide templates at both sides, the middle plate (602) of the movable wide template is exposed, the exposed middle plate is sleeved with at least one fixed-length supplemental long template (604) to supplement the gap between the left template and the right template, and after being supplemented, a pushing force is applied to the movable long template, so that the left template, the supplemental long template and the right template in each movable wide template are tightly abutted to form a seal, in this state, both ends of the movable long template are fixed with the wide templates at both sides through the locking member A (5), the pouring frame of the precast slab is formed between the movable long template, the movable wide template, the long template and the common base template (1), and the precast slab can be formed by pouring the pouring material into the pouring frame; after the precast slab is formed, the locking of the locking member A and the locking member B is released, the movable wide template is removed or slid, and the movable long template is slid, so that the demolding is realized, the precast slab is removed, and the manufacturing is completed.

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