Compression molding method of double-layer stone-like brick

Abstract

The compression molding method comprises the following steps that firstly, a mold is determined according to the structure of the double-layer stone-like brick needing to be manufactured, the mold comprises a molding mold cavity, a surface material pressing head and a mold pressing head, and an edge surrounding groove is formed in the bottom face of the surface material pressing head; 2, the needed fabric is arranged in a forming die cavity; 3, a fabric pressing head prepresses the fabric, and a fabric layer with a convex surrounding edge is formed in the forming die cavity; fourthly, base materials needed by the double-layer stone-like brick are arranged in the surface material layer in the third step; 5, the mold pressing head conducts main pressing on the base material and the surface material in the forming mold cavity, and the double-layer stone-like brick is formed through compaction; according to the compression molding method of the double-layer stone-like brick, the convex surrounding edge is formed on the surface material layer, so that cracks or looseness of the side surface of the surface material layer can be reduced, and the production quality of the double-layer stone-like brick is improved.

Description

Technical Field

[0001] The invention relates to a pressing method for double-layer imitation stone bricks. Background Art

[0002] There are many mechanical production lines for imitation stone bricks, and the processes include laying, dehydration, pressing, demoulding and handling, etc.; when producing imitation stone bricks, in order to make the imitation stone bricks stronger and more beautiful, two raw materials are used to produce double-layer imitation stone bricks, so that the imitation stone bricks have both the advantages of being strong and beautiful; for example, the top and side surfaces of the curb exposed to the outside use a fabric that makes the curb more beautiful, and the inward part of the curb uses another base material that makes the curb stronger; when producing double-layer imitation stone bricks, generally the fabrics required for the top and side surfaces are laid in the mold cavity at one time, the top surface fabric layer and the side surface fabric layer of the imitation stone brick are pre-pressed, and then the base material is laid in the mold cavity, and the double-layer imitation stone brick is mainly pressed; however, in this method, when the base material is laid after the top surface fabric layer and the side fabric layer of the imitation stone brick are pre-pressed, the side fabric layer will be squeezed and impacted by the base material, resulting in cracks or looseness on the side fabric, seriously affecting the production quality, and the side fabric layer will be mixed with the base material, affecting the side appearance.

[0003] Based on the above background, a double-layer imitation stone brick pressing method is proposed to solve the problem. Summary of the invention

[0004] The object of the present invention is to provide a press forming method for a double-layer imitation stone brick, wherein the double-layer imitation stone brick comprises a surface layer and a base material layer, and the four side surfaces and the bottom surface of the double-layer imitation stone brick are all surface layers, comprising the following steps: Step 1: Determine a mold according to the structure of the double-layer imitation stone brick to be manufactured, the mold comprising a molding cavity with an opening at the upper end, a fabric pressing head and a mold pressing head, and a surrounding groove is provided on the bottom edge of the fabric pressing head; Step 2: Laying the fabric required for the double-layer imitation stone brick into the forming cavity; Step 3: The fabric pressing head pre-presses the fabric in the forming cavity, forms a fabric layer on the bottom and side surfaces of the forming cavity, and forms convex ridges parallel to the four sides of the fabric layer on the inner bottom surface of the fabric layer, until the fabric layer and the convex ridges reach a hardness without collapse; wherein the convex ridges divide the fabric layer into a central area and a side gap area, and the side gap area surrounds the edges around the central area; Step 4: placing the base material required for the double-layer imitation stone bricks in the hollow area and the side gap area of ​​the fabric layer in step 3; Step 5: The mold pressing head performs main pressing on the base material and the surface material in the molding cavity until they are compacted and formed into a double-layer imitation stone brick.

[0005] Preferably, the height of the protruding ridge is 3 / 4 of the height of the side edge of the fabric layer.

[0006] Preferably, the cross-section of the protruding rib is a trapezoid that is narrow at the top and wide at the bottom.

[0007] Preferably, the molding cavity is composed of a bottom support plate and side enclosures, the side enclosures are vertically penetrating frames surrounded by four side panels, and the side panels are tightly connected end to end, and the side enclosures are located on the edge of the bottom support plate.

[0008] The advantages and beneficial effects of the present invention are: The present invention discloses a double-layer imitation stone brick pressing and forming method. The mold is determined according to the structure and requirements of the product, and convex ribs are formed on the inner bottom surface of the surface layer. The surface layer and the base material layer are embedded with the convex ribs, thereby improving the connection stability between the two.

[0009] The present invention provides a pressing and forming method for double-layer imitation stone bricks. During the main pressing process of the mold pressure head, the convex ribs will block the extrusion impact of most base materials on the side of the surface layer. Since the height of the convex ribs is lower than the side height of the surface layer, the remaining base material will pass over the convex ribs under extrusion, and the edge gap area will be evenly filled. The side of the surface layer and the convex ribs are reasonably supported, the cracks or looseness on the side of the surface layer are reduced, and the production quality of the double-layer imitation stone bricks is improved. The method has the advantages of wide application range, low cost, and easy promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the molding cavity in the present invention.

[0011] Figure 2 It is a schematic diagram of the production process of the double-layer imitation stone brick in the present invention. DETAILED DESCRIPTION

[0012] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0013] The technical solution specifically implemented in the present invention is: like Figure 1 and Figure 2 As shown, a pressing method for a double-layer imitation stone brick, the double-layer imitation stone brick comprises a surface layer 1 and a base material layer 2, and the four sides and the bottom of the double-layer imitation stone brick are all the surface layer 1, comprising the following steps: Step 1: Determine a mold according to the structure of the double-layer imitation stone brick to be manufactured, the mold comprising a molding cavity 3 with an opening at the upper end, a material pressing head 4 and a mold pressing head 5, and a surrounding groove 41 is provided on the bottom edge of the material pressing head 4; Step 2: Laying the fabric required for the double-layer imitation stone brick into the forming cavity 3; Step 3: The fabric pressing head 4 pre-presses the fabric in the forming cavity 3, forms a fabric layer 1 on the bottom and side surfaces of the forming cavity 3, and forms convex ribs 11 parallel to the four sides of the fabric layer 1 on the inner bottom surface of the fabric layer 1, until the fabric layer 1 and the convex ribs 11 reach a hardness without collapse; wherein the convex ribs 11 divide the fabric layer 1 into a central area 6 and a side gap area 7, and the side gap area 7 surrounds the edges of the central area 1; Step 4: Arrange the base material required for the double-layer imitation stone brick in the hollow area 6 and the side gap area 7 in the fabric layer 1 in step 3; Step 5: The mold pressing head 5 performs main pressing on the base material and the surface material in the molding cavity 3 until they are compacted and formed into a double-layer imitation stone brick.

[0014] The height of the above-mentioned convex rib 11 is 3 / 4 of the height of the side of the fabric layer 1; specifically, during the main pressing process of the mold pressing head 5, it is convenient for the unobstructed base material to pass over the convex rib 11, uniformly fill the edge gap area 7, and then reasonably support the side of the fabric layer 1 and the convex rib 11.

[0015] The cross-section of the protruding rib 11 is a trapezoidal shape that is narrow at the top and wide at the bottom. Specifically, the trapezoidal shape that is narrow at the top and wide at the bottom facilitates the extrusion molding and demoulding of the protruding rib 11 by the fabric pressing head 4, and is more conducive to preventing the extrusion impact of the base material on the side of the fabric layer 1.

[0016] The molding cavity 3 is composed of a bottom support plate 31 and side enclosures. The side enclosures are vertically penetrating frames surrounded by four side panels 32 , and the side panels 32 are tightly connected end to end. The side enclosures are located on the edge of the bottom support plate 31 .

[0017] When manufacturing double-layer imitation stone bricks according to the method of the present invention, the fabric in the molding cavity 3 is squeezed by the fabric pressing head 4 to form a fabric layer 1 with a convex rib 11 in the molding cavity 3. On the one hand, the fabric layer 1 and the base material layer 2 are embedded with the convex rib 11 to improve the connection stability between the two; on the other hand, during the main pressing process of the mold pressing head 5, the convex rib 11 will block most of the extrusion impact of the base material on the side of the fabric layer 1. Since the height of the convex rib 11 is lower than the height of the side of the fabric layer 1, the remaining part of the base material will be squeezed over the convex rib 11, uniformly filling the edge gap area 7, reasonably supporting the side of the fabric layer 1 and the convex rib 11, reducing cracks or looseness on the side of the fabric layer 1, and improving the production quality of the double-layer imitation stone bricks. It has the advantages of wide application range, low cost, and easy promotion.

[0018] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for pressing and forming a double-layer imitation stone brick, the double-layer imitation stone brick comprising a surface layer and a base material layer, and the four side surfaces and the bottom surface of the double-layer imitation stone brick are all surface layers, characterized in that: The following steps are involved: Step 1: Determine a mold according to the structure of the double-layer imitation stone brick to be manufactured, the mold comprising a molding cavity with an opening at the upper end, a fabric pressing head and a mold pressing head, and a surrounding groove is provided on the bottom edge of the fabric pressing head; Step 2: Laying the fabric required for the double-layer imitation stone brick into the forming cavity; Step 3: The fabric pressing head pre-presses the fabric in the forming cavity, forms a fabric layer on the bottom and side surfaces of the forming cavity, and forms convex ridges parallel to the four sides of the fabric layer on the inner bottom surface of the fabric layer, until the fabric layer and the convex ridges reach a hardness without collapse; wherein the convex ridges divide the fabric layer into a central area and a side gap area, and the side gap area surrounds the edges around the central area; Step 4: placing the base material required for the double-layer imitation stone bricks in the hollow area and the side gap area of ​​the fabric layer in step 3; Step 5: The mold pressing head performs main pressing on the base material and the surface material in the molding cavity until they are compacted and formed into a double-layer imitation stone brick.

2. A method for pressing and forming a double-layer imitation stone brick according to claim 1, characterized in that: The height of the protruding ridge is 3 / 4 of the height of the side edge of the fabric layer.

3. A method for pressing and forming a double-layer imitation stone brick according to claim 2, characterized in that: The cross section of the convex rib is a trapezoid that is narrow at the top and wide at the bottom.

4. A method for pressing and forming a double-layer imitation stone brick according to claim 3, characterized in that: The molding cavity is composed of a bottom support plate and side enclosures. The side enclosures are vertically penetrating frames surrounded by four side panels, and the side panels are tightly connected end to end. The side enclosures are located on the edge of the bottom support plate.

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