Concrete Hollow Brick Mould and Its Manufacturing and Usage Methods

Abstract

The present invention relates to a manufacturing method and a usage method of a concrete hollow brick mold. The mold includes two sets of modules (1)(1a) in the usage state. Through the integral connection of the pressing head group (12) and the mold box (11) and the detachable design of a single pressing head, its lower module (1a) is installed upside down on the new vibration box as a feeding mold, and the upper module (1) is installed normally as a forming mold. According to the concept of the present invention, after the upper and lower two sets of modules are installed in the opposite directions, the core connecting beam (14) for connecting the core in the lower mold box is located at the bottom of the entire mold box, and the connecting beam (14) in the upper mold is at the top. Thus, when feeding, there is no obstruction of the connecting beam in the area above the mold cavity. There is no blind area, so that the feeding is very uniform, and there is also no blind area after the pressing head presses down. Therefore, the surface of the hollow brick after demolding is very flat and there will be no cracking marks, thus producing high-quality hollow bricks.

Description

Technical Field

[0001] The present invention relates to a concrete hollow brick mold and its manufacturing and using methods. Background Art

[0002] In existing molds for cement hollow bricks, adjacent mold cores are connected by a flat beam. Therefore, this beam can be called a connecting beam. With such a setting, the pressing heads in contact with the brick surface of each brick are also separated horizontally. Each pressing head is connected to the top of the pressing head foot plate, and then all the pressing heads of a set of molds are connected in series by a pressing head connecting plate to form a whole, forming a pressing head group. In this way, the pressing heads can enter or be pulled out of the mold cavity.

[0003] When feeding the material, the pressing heads are raised, and the feeding vehicle feeds the material back and forth between the pressing heads and the mold box. The feeding direction is from above the mold core connecting beam downward. When using this feeding method, a blind area will be formed below the connecting beam, and the material in this blind area is always less than that in the position without the beam blocking. It can be seen that the existing molds cannot make the material feeding uniform. When the hollow bricks are demolded, the material feeding below the connecting beam is less due to the blockage of the connecting beam, and the pressing heads cannot press the blind area below the connecting beam either. Therefore, the brick wall is loose and the density is insufficient, and it is easy to form notches, cracks or burrs. The appearance of burrs is mainly because the relevant parts of the pressing heads do not press, so burrs are formed on the upper part of the brick wall. Therefore, the wall of the hollow brick made by using the mold in the prior art is usually loose below the connecting beam, while the part without the connecting beam blocking is relatively solid. Therefore, the loose position is easy to crack, and the damage rate of the produced hollow porous bricks is high, the cost is high and the quality is poor. This is also why it is impossible to produce thin-walled hollow bricks with the molds in the prior art.

[0004] In addition, when the existing technology molds are used, if the material is stirred too dry, the cracks of the hollow bricks after demolding will be deeper and the loss rate will also be large. If the material is stirred too wet, it is not easy to feed the material, thus increasing the cost. And there will inevitably be some sundries such as larger stones or iron in the raw materials. In this way, it may stay above the mold core and cannot fall into the mold cavity during the material feeding. When pressing during molding, it will damage the mold. In addition to the demolding defects caused by the raw materials, the connecting beam in the mold of the prior art is very easy to deform. In this way, when the pressing head presses down during molding, it will damage the mold core or the pressing head foot, resulting in heavy losses.

[0005] It can be seen that there are many defects in the existing technology molds. Therefore, it has become an urgent task to solve the technical defects of the existing molds. Summary of the Invention

[0006] The purpose of the present invention is to solve the above technical problems and provide a concrete hollow brick mold and its manufacturing and using methods.

[0007] To achieve the purpose of solving the above defects, the present invention aims to provide a new method for manufacturing and using a concrete hollow brick mold. The mold includes two sets of modules arranged in the reverse direction from top to bottom in the use state. Its lower mold is that the mold box and the pressing head are installed upside down on the new vibration box as the feeding mold, and the upper mold is installed normally as the forming mold. The module includes a mold box and a pressing head group. Inside the mold box, a mold core and a connecting beam for connecting the mold cores are provided.

[0008] The pressing head plate and the pressing head foot plate are also integrally designed. The pressing head foot plates are arranged at intervals and vertically on the pressing head plate. The pressing head foot plate is characterized in that the pressing head plate in contact with the brick is an integral plate shape, and only an avoidance hole for the mold core to pass through is left.

[0009] According to one aspect of the present invention, the tops of the pressing head foot plates are vertically separated from each other. 3 to 4 bolt holes are provided at the top of the pressing head foot plate. An adjustable spacer connecting piece is provided between the tops of each pressing head foot plate of a single pressing head. The pressing head foot plates and the upper ends of the pressing head foot plates are connected and locked with bolts by sandwiching the spacer connecting piece to form the entire detachable and movable single pressing head.

[0010] Screw mounting holes are provided on the series connection plate, and threaded holes matching the screw mounting holes on the series connection plate are provided at the top of the single pressing head.

[0011] The pressing head group is composed of 1 or 50 of the single pressing heads, and the number of the single pressing head groups is determined by the size of the machine type.

[0012] A small frame the size of the hollow brick is provided inside the mold box. 2 to 4 rows of mold cores with mold core connecting beams are provided inside the small frame. The number of the small frames inside the mold box and the mold cores inside the small frame is determined by the size of the machine type and the requirements of the product.

[0013] According to the second implementation scheme of the present invention, a notch is provided at the top of the pressing head foot plate;

[0014] Clamping plates are provided on both sides of the top of the pressing head foot plate.

[0015] The pressing head series connection plate is arranged as two plates that cooperate up and down. A fixed groove that can match the pressing head foot plate installed with the connecting clamping plate is provided on the next series connection plate, and the upper one is a cover plate. The top of the pressing head foot plate provided with the notch 1222a is inserted from the direction without the mold core connecting beam below the mold box, lifted out above the mold box and then inserted into the groove of the lower series connection plate. Then, clamping plates are clamped on both sides of the top of the pressing head foot plate and pressed into the fixed groove, and the upper plate is covered and tightened with bolts to form a set of detachable modules.

[0016] According to one aspect of the present invention, a reinforcing flange plate is provided outside the mold box;

[0017] The reinforcing flange plate of the module that is in the lower position in the use state is located at the periphery of one end without the core connecting beam in its mold box.

[0018] The reinforcing flange plate of the module that is in the upper position in the use state is located at the middle periphery of its mold box.

[0019] A manufacturing method of a concrete hollow brick mold, comprising the following steps:

[0020] In the small box of each brick in the mold box, grooves for installing the core connecting beam are evenly arranged according to the required thickness of the brick wall, and then the core connecting beam with the core is pressed into the groove of the core connecting beam. After the core connecting beam is pressed into the groove of the core connecting beam, a core for producing cement hollow bricks is formed. The pressing head plate and the pressing head foot plate are integrated, and the pressing head foot plates are arranged at intervals and perpendicularly on the pressing head plate. It is characterized in that the pressing head plate in contact with the brick is designed as an integral plate shape, and only avoidance holes for the core to pass through are left.

[0021] The pressing head foot plates are separated from the top ends of the pressing head foot plates. A row of bolt holes is arranged at the top end of each pressing head foot plate. A spacer connecting piece with a thickness matching that of the pressing head foot plate is arranged between the pressing head foot plates. The spacer connecting piece is also provided with holes matching the holes at the top end of the pressing head foot plate. During assembly, the top end of the pressing head foot plate without the spacer connecting piece is inserted into the mold box from the direction without the core connecting beam below the mold box and rises out above the core connecting beam. Then, the spacer is inserted at the top end of the pressing head foot plate and locked with bolts. After locking, the pressing head plate cannot rise above the core beam, and the pressing head can rise below without the core beam, but only within the length of the pressing head foot plate. Each connection part is slightly welded, not too firmly, so that it can be easily ground open during disassembly. After all the pressing heads in the mold box are installed in the same way, then the above-mentioned pressing head series plate is covered and tightened with bolts to connect all the pressing heads in the mold box together to form a whole detachable pressing head group. This also forms a new type of mold in which the pressing head only moves in the mold cavity.

[0022] (2) According to one aspect of the present invention, in the step (the second implementation scheme), the pressing head foot plate with a notch is inserted into the mold box from below without the core connecting beam and extends out above the core connecting beam, and then is inserted into the lower pressing plate with a fixed groove. Then, a clamping plate is clamped on both sides of the top end of each pressing head foot plate (one of which is provided with bolt teeth in each hole), and tightened with countersunk bolts. In this way, a T-shaped shape is formed at the top end of each pressing head foot plate, which just fits into the fixed groove of the lower series plate matching (after the clamping plate is installed at the top end of the pressing head foot plate). After all the pressing heads are pressed into the series plate in the same way, then the upper sealing plate is covered and drilled, the series plate with the fixed groove is tapped, and then the upper sealing plate is tightened with countersunk bolts to seal all the pressing head foot plates in the groove, forming a detachable module.

[0023] (3) Method for using a concrete hollow brick mold, comprising the following steps:

[0024] Install the mold box of the lower mold set upside down on the vibration box of the block forming machine, and also install the pressing head upside down on the lower pressing head lifting transition plate of the block forming machine as a feeding mold. Install the mold box of the previous mold set on the vibration box of the block forming machine in the normal direction. The vibration box is connected to the mold box lifting support plate, and the pressing head is installed on the upper pressing head lifting transition plate of the block forming machine. When the equipment runs, lower the lower mold pressing head to the required position to leave a feeding space in the mold cavity. Then raise the upper mold box together with the pressing head to a position where the feeding cart can pass. Then the feeding cart moves back and forth between the lower mold set and the upper mold set for feeding. When the feeding is full, the feeding cart retreats. Lower the upper pressing head to the required position, lower the upper mold box to align with the lower mold box, then raise the lower pressing head to push the fed material into the mold cavity of the upper mold. Then slightly raise the upper mold and the upper pressing head to push the brick support plate into place. Then lower the upper mold to form the shape. After forming, raise the mold box, raise the upper pressing head group again, and then push the plate and the brick out of the mold. One process is completed.

[0025] According to the concept of installing the two mold sets of the present invention upside down from top to bottom, after the lower mold is installed upside down, the mold core connecting beam for connecting the mold core in the lower mold box is located at the bottom of the entire mold box, while the pressing head plate of the lower pressing head is above the mold core connecting beam, and the mold core connecting beam in the upper mold is located at the top of the mold box. And the pressing head plate of the upper pressing head is below the mold core connecting beam. In this way, a through cavity is formed between the upper pressing head plate and the lower pressing head plate. The through cavity can extend into each other's mold cavities, so that when feeding, there is no obstruction of the connecting beam in the area above the mold cavity. There is no blind area, which makes the feeding very uniform. There is no place that the pressing head cannot press after pressing down, so that the produced hollow bricks will not crack. Its pressing head plate is designed as an integral plate shape and will not produce burrs, so that high-quality hollow bricks with any thickness can be produced. Moreover, it can also prevent the connecting beam and the mold core from being damaged during the movement of the pressing head. Description of the Drawings

[0026] Figure 1 Schematic diagram showing the butt joint of the upper and lower molds of the concrete hollow brick mold of an embodiment of the present invention not installed on the frame in the opposite direction;

[0027] Figure 2 Schematic cross-sectional view of the internal structure of the mold box of the concrete hollow brick mold of an embodiment of the present invention;

[0028] Figure 3 Schematic diagram showing the single-piece connected pressing head plate and the pressing head foot plate of the concrete hollow brick mold of the first embodiment of the present invention without assembling the spacer bars;

[0029] Figure 4Schematic diagram showing the pressure head plate of the concrete hollow brick mold according to the first embodiment of the present invention is plate-shaped, with only an avoidance hole through which the mold core can pass.

[0030] Figure 5 Schematic diagram showing a single assembled pressure head (right) of the concrete hollow brick mold according to the first embodiment of the present invention, and a spacer connecting piece is placed between the top end of the pressure head foot plate and the pressure head foot plate and fixed with bolts (left).

[0031] Figure 6 Schematic diagram showing the perspective view of the lower mold unit of the concrete hollow brick mold according to an embodiment of the present invention after being inverted in the opposite direction, with a reinforcing flange plate welded around the periphery of the mold box at one end without the mold core connecting beam, and the pressure head (122) protruding above the mold box without the mold core connecting beam (14) after the lower mold unit is inverted. (Left) is the schematic diagram after the flange plate is welded around the periphery of the mold box without the mold core connecting beam, and (right) is the schematic diagram of the pressure head rising above the mold box at one end without the mold core connecting beam after the lower pressure head is pushed up;

[0032] Figure 7 Schematic diagram showing the upper mold of the concrete hollow brick mold according to an embodiment of the present invention as observed from above after a single pressure head is assembled into the mold box and the flange plate of the upper mold unit mold box is welded around the middle periphery;

[0033] Figure 8 Schematic diagram showing the concrete hollow brick mold according to the first embodiment of the present invention. (Left figure) is after the pressure head (122) group and the series plate (121) are assembled, and (right figure) is the sectional view of the positions of the pressure head plates, mold boxes (11)(11a), mold cores, and the cavities (16) of the mold core connecting beams (14) of the upper and lower mold units (1)(1a) after the two mold units are installed in the opposite direction;

[0034] Figure 9 Sectional view of the lower pressure head extending into the upper mold cavity after the pressure head moves. Schematic diagram showing the internal perspective view during the use of the concrete hollow brick mold according to an embodiment of the present invention, with the lower pressure head group (1a) before rising (left) and the lower pressure head group (12a) after rising and the pressure head extending into the upper mold cavity (right).

[0035] Figure 10 Schematic diagram showing the installation of the concrete hollow brick mold according to an embodiment of the present invention on the frame of the block forming machine;

[0036] Figure 11 Schematic diagram showing the structure of the pressure head foot plate of the concrete hollow brick mold according to the second embodiment of the present invention, with only bolt holes at the top end of the pressure head foot plate and no clamping pieces installed, and the clamping pieces are installed at the top end of the pressure head foot plate. (Left) is the schematic diagram before the clamping pieces are installed, and (right) is the schematic diagram after the clamping pieces are installed;

[0037] Figure 12 The serial plate of the concrete hollow brick mold schematically showing the second embodiment of the present invention is provided with a lower serial plate and an upper pressing plate. The lower plate is provided with a fixed groove matching the clamping piece at the top of the press head foot plate. (Left) is the upper pressing plate, and (right) is the figure of the lower serial plate with the fixed groove.

[0038] Figure 13 Schematic diagram showing the press head group (only a single group of press heads assembled with the serial plate) of the concrete hollow brick mold of the second embodiment of the present invention. Specific embodiments

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] When describing the embodiments of the present invention, the orientation or positional relationships expressed by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" are based on the orientation or positional relationships shown in the relevant drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0041] The present invention will be described in detail below in combination with the drawings and specific embodiments. The embodiments cannot be elaborated one by one here, but the embodiments of the present invention are not limited to the following embodiments.

[0042] Referring to Figure (1), the mold of the present invention is used for preparing concrete hollow bricks and includes two sets of modules (1) and (1a), which are arranged in opposite directions, one above the other, in the use state. Among them, the upper module (1) is a forming mold, and the lower module (1a) is a cloth-feeding mold. The structures of the two sets of modules 1 (1a) are basically the same, except that the reinforcement flange of the lower cloth-feeding module (1a) is welded inside the mold box without the periphery of one end of the core connecting beam (14), as shown in Figure (6) (left figure), while the reinforcement flange (15) of the upper forming mold is welded on the periphery of the middle section of the mold box (11) or on the periphery of the core connecting beam, as shown in Figure (7). The difference between the upper and lower sets of molds lies in the different positions of the welded flange plates and the installation positions, and the others are the same. Therefore, when describing the module structure below, only one set of modules will be described in detail as an example. Taking the cloth-feeding mold located below in the use state as an example, the module (1a) includes a mold box (11a) and a press head group (12a). There is a core (13) and a core connecting beam (14) inside the mold box (11). A reinforcement flange (15) is provided outside the mold box, and holes (17) (such as a vibration box) for connecting other devices are provided on the flange plate. In the use state, the reinforcement flange (15) of the module (1a) located below is located on the periphery of one end of its mold box (11a) without a core connecting beam; in the use state, the reinforcement flange (15) of the upper module 1 is located on the periphery of the middle section of its mold box (11) or on the periphery of one end with a core connecting beam.

[0043] Referring to Figure 2, the inside of the mold box (11) has a mold core (13) and a mold core connecting beam (14) for connecting the mold core (13) and the mold box (11). According to the concept of the present invention, in the use state, the mold core connecting beams (14) provided in the mold boxes of the two sets of mold units (1)(1a) are the ends that are away from each other. In the cross-section and perspective view of the right figure of Fig. (8), after the two sets of mold units are installed in the opposite up and down directions, the mold core connecting beams (14) are respectively located at the upper and lower ends of the two molds. Thus, when it is the lower mold (1a) in the mold box sectional view shown in Fig. (8), the mold core connecting beam (14) of its lower mold box is located at the bottom of the mold box in the use state, while the platen plate (1221) of the lower pressing head (12a) is above the mold core connecting beam. The mold core connecting beam (14) of the upper mold box (11) is located at the top of the mold box (i.e., the upper part in Fig. (2)) in the use state, while the platen plate (1221) of the upper pressing head (12) is below the mold core connecting beam. In this way, a through cavity is formed between the upper platen plate and the lower platen plate. Therefore, the mold core connecting beam in the mold box will not cause occlusion and there is no blind area during cloth feeding, thus perfectly solving the problems in the prior art. Referring to Fig. (3) and Fig. (4), in the first embodiment of the present invention, the pressing head foot plates (1222) are vertically erected at intervals on the platen plate 1221, and the feet and the top ends of the feet are separated as shown in the right figure of Fig. (3). The pressing head (122) is a detachable structure, and the platen plate (1221) and the foot plate (1222) are integrated. The platen plate (1221) is a plate-like structure, and the pressing head foot plates (1222) are all vertically arranged at intervals on the surface of the platen plate (1221). Specifically, the number of the foot plates can be determined according to the number of holes of the hollow brick. The platen plate (1221) is provided with avoidance holes 1221a through which the mold core can pass. The shapes of these avoidance holes (1221a) are such that four holes are provided on each side and two holes are in the middle; the number of holes can be increased or decreased according to needs, or as shown in Fig. (4), three holes are respectively provided on both sides, and specifically, it can be determined by the structure of the hollow brick to be produced.

[0044] Referring to Figure (5), in the first embodiment, the spacer connector (123) is generally rectangular in shape and is provided between adjacent presser foot plates (1222) within the same press head (122). Its installation position is at the end of the presser foot plate (1222) away from the press head plate (1221). To connect the presser foot plates (1222), after placing all the spacer connectors (123) between adjacent presser foot plates (1222), a long bolt is passed through the entire press head to connect the spacer connectors (123) and the presser foot plates (1222), and then fixed with nuts. Of course, in order to connect with the series plate (121), the spacer connector (123) is also provided with threaded holes (18) corresponding to the screw mounting holes (121a) on the series plate (121), as shown in the left figure of Figure (5). Thus, the press head (122) can be fixed on the series plate (121) through bolts, which facilitates the disassembly and assembly of the press head (122). Or the connection of the spacer connector (123) and the seam of the foot plate is slightly spot-welded to make the entire press head stronger and easier to grind when disassembling. In addition, the thickness of the spacer connector (123) can be determined according to the distance between the presser foot plates (1222).

[0045] Referring to Figure 6 , the difference in the structure after the two sets of modules are installed in the opposite direction from top to bottom in the present invention lies in the different welding positions of the flange plate (15) connecting the mold box of the lower module (1a) to the forming equipment. In the use state, the flange plate of the mold box (11a) of the lower module (1a) is welded on the periphery of one end of the mold box without a mold core connecting beam, as shown in the left figure of Figure (6), while the reinforcing flange plate of the upper forming mold (1) is welded on the periphery of the middle section of the mold box or the periphery with a mold core connecting beam, as shown in the right figure of Figure (7).

[0046] Referring to Figure 8 , the press head group (12) of the present invention includes a series plate (121) and a press head (122), wherein the press head (122) is fixedly connected to the series plate (121) with bolts. In the present invention, the press head group (12) has two embodiments, Figure 8 which is the first embodiment. In this embodiment, the series plate 121 is directly connected to the press head (122), and is provided with screw mounting holes (121a) arranged at intervals. Referring to Figure 4 and Figure 5 、 Figure 8The indenter group (12) of the present invention further includes a spacer connecting member (123), and the spacer is also provided with screw holes matching the screw holes at the top end of the indenter foot plate, so that the indenter (122) can be connected to the series plate (121). After the two sets of modules are installed in the reverse direction as shown in the right figure of Fig. (8), the core connecting beam (14) in the mold box (11) of the upper module (1) is located at the top of the mold box (11), while the indenter plate (1221) of the upper indenter is below the core connecting beam (14). The core connecting beam (14) in the mold box (11a) of the lower module (1a) is located at the bottom of the mold box (11a), while the indenter plate (1221) of the lower indenter group (12a) is above the core connecting beam (14). In this way, a through cavity body (16) is formed between the upper indenter plate and the lower indenter plate.

[0047] See Figure 9 , in the present invention, after the two sets of modules are installed in the reverse direction from top to bottom, when the upper indenter group (12) rises and the lower indenter group (12a) descends, a through cavity is formed between the lower indenter plate (1221) and the upper indenter plate (1221) in the two mold boxes. Thus, both the upper indenter group and the lower indenter group can extend into each other's mold cavities. Figure 8 It can be clearly seen from the cross-section of the right figure that the core connecting beam (14) in the mold box (11) of the upper module (1) is located at the top of the mold box (11), while the indenter plate (1221) of the upper indenter is below the core connecting beam (14). The core connecting beam (14) in the mold box (11a) of the lower module (1a) is located at the bottom of the mold box (11a), while the indenter plate (1221) of the lower indenter group (12a) is above the core connecting beam (14). In this way, a through cavity body (16) is formed between the upper indenter plate (1221) and the lower indenter plate (1221). Therefore, the core connecting beam in the mold box will not cause obstruction and there is no blind area during cloth feeding.

[0048] This makes the cloth feeding simpler and more uniform. After the material is fully covered, the lower indenter group (12a) rises to push the material into the upper mold cavity for forming. Through the concept of the present invention, the defects of the existing technology are perfectly solved, and an ideal working state is achieved.

[0049] See Figure 11, According to another embodiment of the present invention, the shape of the splint (123a) connecting member is still a rectangular strip, but it is shorter and smaller in volume compared to the first embodiment. Additionally, in another embodiment, a notch (1222a) is provided in the middle of the upper end of the foot plate (1222) of the pressing head (122). During installation, the top of the foot plate of the pressing head is inserted from inside the mold box without passing through the mold core connecting beam and extends above the mold core connecting beam, then passes through the fixed groove in the lower series plate, and then splints (123a) are installed on both sides of the top of the pressing head plate. One of them needs to be tapped with screw threads. The splints (123a) are clamped on the left and right sides of the top of the foot plate (1222) of the pressing head and are fixed respectively using bolts. As shown in Fig. 11, in this embodiment, a total of four connecting splints (123a) are provided on each foot plate (1222). When using bolts for fixation, countersunk screws can be used to avoid the screw heads protruding outside and affecting subsequent installation.

[0050] Referring to Fig. (12), in this embodiment, the pressing head group (12) further includes a lower pressing plate (124) that cooperates with the series plate (121). During use, the series plate (121) serves as the upper plate, and the lower pressing plate (124) is provided with a fixed groove that can match the foot plate of the pressing head after the splints (123a) are installed at the top. Specifically, screw mounting holes (121a) are still provided on the series plate (121). However, due to the change in the installation position and shape of the splints (123a), the arrangement of the screw mounting holes (121a) in this embodiment is slightly different from that of the first embodiment, but their functions are all to clamp and fixedly connect the pressing head through bolts to connect with the lower series plate. It can also be seen from this that no threaded holes are provided on the splint (123a) connecting member in this embodiment, threaded holes are provided on the edge of the fixed groove of the lower series plate, and the lower series plate (124) is provided with a fixed groove (124a) into which the foot plate (1222) with the connected splint (123a) can be pressed. The upper and lower series plates are fixed with bolts to firmly clamp the foot of the pressing head in the series plates to form the pressing head group (122).

[0051] Referring to Fig. (13), in the assembled state, due to the presence of the notch (1222a) on the foot plate (1222), the top of the foot plate (1222) of the pressing head 122 can be pressed into the fixed groove (124a) of the lower pressing plate (124) to form a tight fit. The series plate (121) is located on the upper side of the lower series plate (124) and is fixedly connected to the pressing head (122) using bolts. Thus, the pressing head (122) is fixed between the two plates by the series plate (121) and the lower pressing plate (124).

[0052] In the above two embodiments of the indenter group, the indenter group (12) includes six indenters. Of course, the specific number of indenters can also be determined according to the actual size requirements of the machine type. When more indenters (122) need to be set, only the sizes of the series connection plate (121) and the lower pressing plate (124) need to be increased.

[0053] See Figure 10 , the hollow brick mold of the present invention further includes an external overall frame for supporting and driving the operation of the entire mold. Specifically, the external frame includes a lower vibration box (1007), an upper die indenter lifting oil cylinder (1001), a lower die indenter lifting oil cylinder (1006), an upper die box lifting oil cylinder (1002), an upper guide post (1003), a lower guide post (1005), and an upper die lifting support plate (1004). Among them, there are holes in the middle of the vibration box so that each die box in the mold can be located therein. In this way, the two sets of modules 1 are respectively installed on the upper and lower vibration boxes. And, since the upper module (1) (referred to as the upper die) needs to be lifted and lowered during use, the upper die lifting support plate (1004) is connected to the upper die box lifting oil cylinder (1002), so that it can be driven by the upper die box lifting oil cylinder (1002) to complete the lifting movement. The indenter groups (122) in both the upper and lower dies need to move. Therefore, the indenter groups (12) in the two sets of modules (1) (1a) are respectively connected to the upper and lower indenter lifting oil cylinders. The function of the upper and lower guide posts is to provide guidance for the indenter group (12) in the upper and lower dies during lifting. As shown in Figure (10), in this way, after the mold is installed with the outer frame, it can be regarded as only one embodiment, or directly regarded as the front section of a relatively complete cement brick block forming main machine. Excluding the material truck section

[0054] When the concrete hollow brick mold of the present invention is manufactured, the indenter group (12) has two embodiments, so the corresponding assembly methods are also divided into two. However, combining Figure 3 and Figure 9, when using the indenter group (12) of the first embodiment, the indenter foot plate (1222) without the spacer (123) connector is inserted from one end of the mold box (11) where the mold core connecting beam (14) is not provided, and passes through to the side where the mold core connecting beam (14) is located. Then, the spacer connector (123) is placed between adjacent foot plates (1222), and a long bolt is used to pass through the foot plate (1222) on one side to the foot plate (1222) on the other side, thereby fixing the connectors (123) between the indenter foot plates to form a single indenter (122). After all the indenters inside the mold box (11) are installed, the series connection plate (121) is covered and bolts are screwed into the screw installation holes (121a) to complete the assembly of the indenter group (12). When using the indenter group (12) of the second embodiment, the indenter foot plate (1222) without the clamping plate (123a) connector is inserted from one end of the mold box (11) where the mold core connecting beam (14) is not provided, and passes through to the side where the mold core connecting beam (14) is located. Then, it passes through the fixing groove (124a) of the lower series connection plate (124), and then two clamping plate (123a) connectors are clamped on the left and right sides of the top of the indenter foot plate (1222) and fixed respectively with bolts. After all the clamping plate (123a) connectors are installed on the top of the indenter foot plates, they are pressed into the fixing groove (124a), the upper pressing plate (121) is covered, and bolts are screwed into the screw installation holes (121a) to complete the assembly of the indenter group (12). For the indenter group (12) assembled in the above manner according to the present invention, since the entire indenter is connected by the spacer connector (123) and the mold core connecting beam (14) is sealed in the indenter, the hollow brick mold of the present invention is blocked upward by the mold core connecting beam (14) and the indenter plate (1221), and downward by the spacer connector (123) and the mold core connecting beam (14). The indenter without the mold core connecting beam below can lift out of the mold box, but the movement range is limited to the length of the indenter foot plate, so it will not break away from the mold box 11 and can move up and down therein. And the method of connecting the indenter (122) to the series connection plate (121) by bolts is also convenient for disassembly. After the module assembly is completed, two modules (1) need to be installed on the external frame. During installation, first, the lower mold (1a) group is assembled upside down with the lower vibration box (1007). Here, it is necessary to make the end of the mold box (11a) with the mold core connecting beam (14) face downward, that is, the module (1a) is installed upside down in the perspective of the right figure in Figure (8). The installation form of the upper mold is opposite to that of the lower mold, but the end of the mold box (11) with the mold core connecting beam (14) inside needs to face upward.In this way, the core connecting beam (14) of the upper die (i.e., the forming die) is located at the uppermost position, and the platen (1221) of the upper punch is located below the core connecting beam (14). As shown in the right view of Figure (8), the core connecting beam (14) of the lower die mold box (i.e., the cloth feeding mold) is located at the lowermost position of the entire mold, and the platen (1221) of the lower punch (12a) is located above the core connecting beam (14). In this way, a through cavity is formed between the platen (1221) of the upper punch (12) and the platen (1221) of the lower punch (12a), so that the core connecting beam (14) will not block the middle cavity (16) area of the mold, and uniform cloth feeding can be achieved.

[0055] When the concrete hollow brick mold of the present invention is in use, cloth feeding is first carried out in the lower die (1a). When the lower die is filled with materials, the upper die box lifting oil cylinder (1002) is used to drive the upper die to descend and align with the lower die. The punch descends to the required position. Then, as shown in Figure (9), the lower die punch lifting oil cylinder (1006) is used to drive the punch group (12a) in the lower die to move upward, so as to push the materials into the mold box (11) of the upper die. Then the upper die group (1) and the punch are slightly lifted to push the brick support plate into place, and the upper die descends to form.

[0056] In the above manner, since there is no blockage by the core connecting beam (14), the mold cavities are all hollow cavities (16). This will make the cloth feeding very uniform, and there is no blind area after the punch presses down. Therefore, the surface of the hollow brick after demolding is very flat and there will be no cracking marks. When adjusting the height of different hollow bricks, it is only necessary to first calculate the limit vibration during the equipment cloth feeding and the compression ratio of the compactness generated by the concrete material in the lower die cavity, and then adjust the height of the punch group (12a) below in the mold cavity to achieve the ideal hollow brick height. This method can not only produce high-quality hollow bricks with any thickness, but also make the operation of the equipment relatively simple, without the need to adjust the equipment parameters at any time. This also requires a lower technical level for the operator, thus saving more costs. In addition, during the use of the mold, there is no need to pull out the punch group (12) outside the mold box (11), and they all move within the mold cavity. Therefore, there is no need to align the mold box and the punch group every time for cloth feeding and forming, which can avoid accidents such as the core being damaged due to misalignment or foreign objects on the mold. Thus, various defects in the prior art are solved, and great social benefits are generated. The use method of the upper and lower pairs of molds installed in the opposite direction of the present invention is not limited to concrete hollow bricks, but also includes other types of bricks, including solid bricks. The above description is only one embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A concrete hollow brick mold, which is divided into an upper mold set and a lower mold set and is used in combination. It is characterized in that, Both the upper module and the lower module include a die box and a punch group. Both the upper module and the lower module are detachable. The upper module is installed in the normal direction, and the die box of the lower module is installed in the reverse direction with the direction without the core connecting beam facing upward and the direction with the punch group facing downward. Among them, the direction with the core connecting beam above is the normal direction. The die box includes a die core and a core connecting beam for connecting the die core. The punch group includes punches and a series plate. The punch plate and the punch foot plate of a single punch in contact with the brick are integrally designed. An avoidance hole for the die core to pass through is provided on the punch plate. Each punch foot plate stands vertically on the punch plate. The upper ends of each punch foot plate are separated and not connected. 3 to 4 bolt holes are provided at the top end of each punch foot plate. The upper ends of each punch foot plate are connected together by a spacer connecting piece. Bolt holes matching the bolt holes at the top end of the punch foot plate are also provided on the spacer connecting piece. The punch group further includes a series plate. Screw mounting holes for installing punches are provided on the series plate. Threaded holes matching the screw mounting holes on the series plate are provided on the spacer connecting piece. The punches and the series plate are bolted together to form the punch group. Insert the top end of the punch foot plate of the integrally connected punch without the spacer connecting piece from the end of the die box without the core connecting beam, and extend it outside the upper core connecting beam. Install the spacer connecting piece between the top ends of the punch foot plates and lock it with bolts to form a single punch. After filling the die box with punches in this way, cover the series plate and fix and connect all the punches together with bolts to form the upper module and the lower module.

2. The concrete hollow brick mold according to claim 1, characterized in that, Reinforcing flange plates are provided on the outside of the die box. The reinforcing flange plate of the die box of the lower module located below in the use state is welded around the periphery of the end of its die box without the core connecting beam. The reinforcing flange plate of the die box of the upper module located above in the use state is located around the middle of its die box.

3. A manufacturing method of the concrete hollow brick mold as claimed in claim 1 or 2, characterized in that, It includes the following steps: A. Insert the top end of the punch foot plate of the integrally connected punch without the spacer connecting piece from the end of the die box without the core connecting beam, and extend it outside the upper core connecting beam. Install the spacer connecting piece between the top ends of the punch foot plates and lock it with bolts to form a single punch. B. Fix and connect each punch in the die box with the series plate through the spacer connecting piece after assembly to form a complete set of modules. C. Install the upper module and the lower module in the reverse direction with the connecting beams facing away from each other on the upper and lower vibrating boxes respectively.

4. A usage method of the concrete hollow brick mold as claimed in claim 1 or 2, characterized in that, It includes the following steps: Install the mold box of the lower module upside down on the vibrating box with an installation hole in the middle of the block molding machine. The pressure head plate of the pressure head group of the lower module faces upward and is also installed upside down on the lower pressure head lifting transition plate of the block molding machine as the feeding mold. Install the mold box of the upper module on the upper vibrating box with an installation hole of the block molding machine in the normal direction. The upper vibrating box is connected to the mold box lifting support plate, and the pressure head group is installed on the lifting transition plate of the upper pressure head of the block molding machine. The normal direction is calculated with the mold core connecting beam above. The reverse installation of the lower module means that the mold core connecting beam is below, which is installed in the opposite direction to the upper module, so that the mold cavities of the upper module and the lower module are connected. When the equipment is running, lower the lower pressure head group to the required position to leave a blanking space in the mold cavity. Then raise the upper mold box together with the upper pressure head group to a position where the feeding cart can pass. Then the feeding cart enters and moves back and forth between the lower module and the upper module for feeding. When the feeding is full, the feeding cart retreats. The upper mold box descends and aligns with the lower mold box, and the upper pressure head group also descends to the required position. Then raise the lower pressure head group to push the fed material into the mold cavity of the upper module. Then the upper module and the upper pressure head group rise slightly to push the brick support plate into place. Then the upper module descends for molding. After molding, the upper mold box rises, and the upper pressure head group rises again. Then push the brick support plate and the brick out of the mold. One process is completed.

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