Brick making mold and pressing machine for asymmetric brick bodies
The lower die groove design of the limiting device and the limiting piece solves the problem of uneven density in the production of asymmetric bricks, achieves uniform compaction and strength improvement of the bricks, and ensures the quality of the project.
Patent Information
- Application Number
- CN202422594119.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing mold press device is difficult to produce asymmetric bricks, resulting in uneven brick density, insufficient local strength, difficulty in demoulding, and affecting the quality of the project.
The lower die groove design adopts a limit device and a movable limit plate. The drive mechanism controls the limit plate to switch between the blocking and retracting states. Combined with the slope design of the upper pressure head and the lower die groove, it ensures uniform distribution of materials and improves the density and strength uniformity of the brick body.
It achieves uniform compaction of asymmetric bricks, improves the density and strength uniformity of the bricks, avoids demoulding difficulties and damage during transportation, and ensures the quality of the project.
Smart Images
Figure CN223383666U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete brick-making molds, in particular to a brick-making mold and a press for asymmetric brick bodies. Background Art
[0002] With the continuous acceleration of engineering construction in my country, the use of concrete-pressed bricks for engineering purposes is increasing, and new types of brick structures are constantly emerging. In the past, bricks used in engineering projects often had relatively standard shapes, with an overall outer contour of rectangular, square, circular, or other regular shapes. Aside from different patterns or textures, the overall structure was symmetrical. When producing bricks with such symmetrical structures, the press device presses from top to bottom, and the force is uniform at all points. Only the design and adjustment of the pressing head and lower mold structure of the press device are required to meet production requirements. However, if the brick structure is asymmetrical, it often cannot meet the pressure requirements at each point, and the density of the produced bricks is severely uneven. The local strength of the bricks produced in this way cannot meet the engineering requirements, affecting the quality of the project.
[0003] Conventional mold presses typically consist of a press, a press platform, a brick mold, and a height adjustment device. The brick mold is further divided into a lower mold and an upper ram. Both the lower mold and the upper ram are made of steel. The core and outer wall of the lower mold form a concave structure consistent with the brick body, which is used to place powder. The convex portion of the upper ram forms a certain mutual pressure with the concave structure of the lower mold, thus allowing a symmetrical brick to be produced by mechanical pressing in a single step. However, conventional mold presses cannot produce asymmetrical bricks, such as bricks with inclined surfaces and inconsistent horizontal heights. Even if a mold press is designed to accommodate irregular brick shapes, the powder cannot be properly distributed left and right during pressing. This will cause the powder to shift and collapse during pressing, inevitably resulting in the shorter side of the brick having a higher strength value, while the taller side has a lower strength value and a higher porosity. This makes demolding difficult, and the bricks lack strength after curing, which also affects their appearance. Utility Model Content
[0004] In response to the shortcomings of the above-mentioned existing technologies, the utility model provides a brick-making mold and press for asymmetric bricks, which can make the materials on the high and low sides of the asymmetric bricks uniform, ensure the consistent density of the bricks, effectively improve the strength and strength uniformity of the bricks, and avoid damage to the bricks during handling, maintenance, transportation and construction.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A brick-making mold for asymmetric bricks, comprising an upper pressing head, a lower die groove, a limiting device, and a bottom plate; the lower die groove is arranged below the upper pressing head, the lower die groove comprises a forming brick groove and a cavity in the middle, and the limiting device is arranged inside the lower die groove and can move between the forming brick groove and the cavity;
[0007] The limiting device includes a plurality of limiting pieces and a driving mechanism, wherein the driving mechanism is used to drive the limiting pieces to switch between a blocking state and a retracting state. In the blocking state, the limiting pieces are inserted into the forming brick groove from the side and divide the forming brick groove into a plurality of spaces along the direction of groove depth change; in the retracting state, the limiting pieces are completely located inside the cavity.
[0008] The bottom plate is installed below the lower die groove, and a supporting plate is provided on the bottom plate for receiving the pressed asymmetric brick body.
[0009] As a further implementation method, the inner side wall of the lower mold groove is provided with a plurality of long holes, and the limiting piece extends into the molding brick groove from the long holes, and the width and height of the long holes match the limiting piece.
[0010] As a further implementation, the bottom of the elongated hole is flush with the bottom wall of the forming brick groove, and the material limiting piece is in contact with the bottom wall of the forming brick groove in the material blocking state.
[0011] As a further implementation, the width of the elongated holes is 1-2 mm to ensure the density of the brick body after forming.
[0012] As a further implementation, the material limiting pieces and the driving mechanism are both arranged in the cavity; the material limiting pieces are provided in two groups, the two groups of material limiting pieces are symmetrically arranged and move in opposite directions when switching states.
[0013] As a further implementation method, there is a certain interval between the two groups of limiting pieces, and the interval distance is not less than the groove width of the forming brick groove.
[0014] As a further implementation method, the driving mechanism includes a driving motor, a transmission rack and a transmission gear. The output shaft of the driving motor is connected to the central axis of the transmission gear. The transmission gear is engaged with the transmission rack for transmission. The transmission rack is fixedly connected to the material limiting piece.
[0015] As a further implementation method, the upper pressure head is provided with two symmetrical groups, and the height of the two groups of upper pressure heads gradually increases from the middle to the two sides; the lower die groove is arranged corresponding to the upper pressure head, and the lower die groove is provided with two symmetrical groups, and the groove depth of the two groups of lower die grooves gradually decreases from the middle to the two sides.
[0016] As a further implementation, the groove width of the molding brick groove is 3-5 cm.
[0017] As a further implementation, the upper pressure head and the lower die groove are both made of stainless steel.
[0018] As a further implementation, the support plate is made of a composite material of glass fiber and thermoplastic resin.
[0019] A press for asymmetric bricks, comprising a brick-making mould for asymmetric bricks as described in any one of the above items, and also comprising a feeder, wherein the feeder is arranged above the brick-making mould.
[0020] By adopting the above technical solution, the beneficial effects of the utility model are as follows:
[0021] 1. The utility model forms different slope surfaces by coordinating the height of the upper pressure head and the depth of the lower die groove to ensure that the volume compression ratio of each part of the material in the lower die groove is consistent, thereby improving the compaction rate of the formed brick body, ensuring the density and uniformity of the brick body, and improving the quality of the brick body.
[0022] 2. The utility model is provided with a limiting device, which can prevent the powder in the lower mold groove from moving and collapsing along the upper inclined surface through the movable limiting piece moving in the lower mold groove, thereby improving the material uniformity on the high and low sides of the asymmetric brick body, thereby making the density of the produced brick body more consistent, improving the uniformity of the brick body strength, avoiding the difficulty of falling off, and reducing the damage of the brick body during handling, maintenance, transportation and construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0024] Figure 1 A front cross-sectional view of a brick-making mold in one or more embodiments of the present invention;
[0025] Figure 2 A schematic top view of the lower die groove in one or more embodiments of the present invention;
[0026] Figure 3 This is a plan view of the upper pressing head and the lower die groove in one or more embodiments of the present invention.
[0027] In the figure: 1. Upper pressure head; 2. Lower die groove; 3. Limit device; 4. Support plate; 5. Bottom plate;
[0028] 21. Forming brick groove; 22. Cavity; 31. Material limiting piece; 32. Transmission gear; 33. Transmission rack; 23. Long hole. DETAILED DESCRIPTION
[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0030] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0031] The contents not described in detail in the examples of this utility model belong to the prior art known to those skilled in the art. If specific conditions are not specified in the examples of this utility model, the experiments were carried out according to conventional conditions in the art or the conditions recommended by the manufacturer. If the manufacturers of the reagents or instruments used in the examples of this utility model are not specified, they are all conventional products that can be purchased commercially.
[0032] Example 1
[0033] In a typical embodiment of the present application, a brick-making mold for an asymmetric brick body is provided, such as Figure 1-3 As shown, it includes an upper pressing head 1, a lower die groove 2, a limiting device 3 and a bottom plate 5; the lower die groove 2 is arranged below the upper pressing head 1, and the lower die groove 2 includes a forming brick groove 21 and a cavity 22 in the middle. The limiting device 3 is arranged inside the lower die groove 2 and can move between the forming brick groove 21 and the cavity 22;
[0034] The limiting device 3 includes a plurality of limiting pieces 31 and a driving mechanism, wherein the driving mechanism is used to drive the limiting pieces to switch between a blocking state and a retracted state. In the blocking state, the limiting pieces 31 are inserted into the forming brick groove 21 from the side and divide the forming brick groove into a plurality of spaces along the direction of groove depth change; in the retracted state, the limiting pieces 21 are completely located in the cavity 22;
[0035] The bottom plate 5 is installed at the bottom of the lower mold groove 2. A supporting plate 4 is provided on the bottom plate 5 for receiving the pressed asymmetric brick body.
[0036] Specifically, the brick-making mold of this embodiment is a steel mold, and the upper pressing head, the lower mold groove and the bottom plate are all made of stainless steel to ensure structural strength.
[0037] like Figure 1As shown, the upper pressure head 1 is arranged above the lower die groove 2 and is connected to the other parts of the press to press the material downward to form the brick body. The upper pressure head 1 is provided with two groups that are symmetrical on both sides. The height of the two groups of upper pressure heads 1 gradually increases from the middle to both sides. The top of the upper pressure head 1 is uniformly installed and arranged, and the bottom of the upper pressure head is arranged as a whole in an inclined manner due to the height difference. In this embodiment, the maximum height value of each group of upper pressure heads is 25-28cm, and the minimum height value is 5-8cm to ensure the compaction effect. Among them, there are several upper pressure heads in each group. In a preferred embodiment, the structure of each upper pressure head includes a vertically arranged pressure column and a pressure sheet connected to the bottom of the pressure column. The pressure sheet is inclined according to the height difference of the upper pressure head. The cross-sectional area of the pressure sheet is larger than the cross-sectional area of the pressure column. Of course, the positions of the several pressure sheets correspond to the several spaces separated in the material blocking state.
[0038] In this embodiment, the lower die groove 2 is arranged corresponding to the upper pressing head 1, such as Figure 1 、 2 As shown, the lower die grooves 2 are also provided in two symmetrical groups, and the groove depth of the two groups of lower die grooves 2 gradually decreases from the middle to the sides, so that the top of the lower die grooves is also arranged at an angle. Among them, the maximum groove depth of each group of lower die grooves is 25-28 cm, and the minimum groove depth is 5-8 cm.
[0039] In order to prevent the powder from moving to the lower side and collapsing when producing irregular bricks, in this embodiment, a limiting device 3 is installed in the lower mold groove 2 to block the powder. Specifically, the lower mold groove 2 includes a peripheral molding brick groove 21 and a central cavity 22. The limiting device 3 is arranged in the cavity 22 and includes a plurality of limiting pieces 31 and a driving mechanism, such as Figure 1 、 2 As shown, multiple limiting plates 31 are arranged in parallel and are all connected to the driving mechanism. The driving mechanism can drive the limiting plates to move in a straight line. When the limiting plates 31 are driven to one end and extend into the forming brick groove 21 from the side for a certain distance, the forming brick groove is divided into several spaces by multiple limiting plates along the direction of groove depth change, which can prevent the powder from sliding from one space to the other spaces in large quantities, thereby ensuring that the volume compression ratio of each part of the material in the forming brick groove is consistent, improving the density and uniformity of the brick body after molding, and effectively improving the quality of the brick body.
[0040] Specifically, the drive mechanism includes a drive motor (not shown in the figure), a transmission rack 33 and a transmission gear 32, wherein the output shaft of the drive motor is connected to the central axis of the transmission gear 32, the transmission gear 32 is meshed with the transmission rack 33 for transmission, and the transmission rack 33 is fixedly connected to all the limiting pieces 31. After the drive motor is started, the gear rack structure drives the limiting piece to move linearly in a certain direction, thereby realizing the switching of the limiting device between the retracted state and the blocking state. In the retracted state, the limiting piece is completely located inside the cavity and does not protrude into the forming brick groove to ensure the structure of the brick body after forming.
[0041] In this embodiment, in order to realize the state switching of the limit device, the inner side wall of the lower mold groove is provided with multiple long holes, such as Figure 1 、 2 As shown, an elongated hole 23 is provided on the sidewall of the forming brick groove 21. A material limiting plate 31 extends a certain distance from the elongated hole 23 into the forming brick groove 21 to prevent the powder from collapsing. The width and height of the elongated hole 23 match the width and height of the material limiting plate 31. Specifically, the width and height of the elongated hole are consistent with the width and height of the material limiting plate, allowing the material limiting plate to move smoothly while preventing material from overflowing from the elongated hole. Furthermore, the bottom of the elongated hole is flush with the bottom wall of the forming brick groove, so that the material limiting plate is in contact with the bottom wall of the forming brick groove when blocking the material.
[0042] In a preferred embodiment, when in the retracted state, the outer end of the limiting plate is located within the elongated hole, thereby blocking the hole and further preventing material from overflowing from the elongated hole. Thus, the limiting plate never leaves the elongated hole in both states and effectively serves as a guide, facilitating rapid movement and accurate insertion of the limiting plate into the forming brick slot. The distance the limiting plate moves each time can be controlled by the drive motor.
[0043] In this embodiment, the width of the elongated holes 23 is set to 1-2 mm to ensure the density of the brick after molding. Accordingly, the limiting pieces 31 are long, rectangular thin pieces with a thickness consistent with the width of the elongated holes 23. The number of limiting pieces can be arranged according to the actual size of the lower mold cavity. Preferably, each group of limiting pieces contains 3-7 pieces.
[0044] Specifically, if Figure 1 、 2 As shown, there are two groups of limiting pieces 31 and driving mechanisms in the cavity 22, and the two groups of limiting pieces 31 are symmetrically arranged. When the limiting device 3 switches between the retracting state and the blocking state, the movement directions of the two groups of limiting pieces 31 are opposite. There is a certain interval between the two groups of limiting pieces, and this interval directly affects the movement range of the limiting pieces. Therefore, in order to ensure that the limiting pieces can smoothly block and retract, the horizontal interval between the two groups of limiting pieces is not less than the groove width of the molding brick groove. The groove width of the molding brick groove is 3-5cm. When the horizontal interval is equal to the groove width of the molding brick groove, as shown in FIG. Figure 2 As shown, in the blocking state, each set of limiting pieces extends into half of the formed brick groove to block the material. In a preferred embodiment, the spacing can be adjusted as needed so that the limiting pieces extend into contact with the other inner wall of the formed brick groove to enhance the blocking effect.
[0045] In addition, if Figure 1As shown, a base plate 5 is provided below the lower die trough 2 for support. A horizontally sliding support plate 4 is provided above the base plate 5. The support plate 4 directly contacts the bottom of the lower die trough 2 and can receive the asymmetric bricks after press-forming. After press-forming, the lower die trough is hoisted and raised, and the support plate drives the formed bricks to slide horizontally out, enabling rapid demolding. The structures for hoisting the lower die trough and horizontally sliding the support plate are both conventional. The support plate is made of a composite material of glass fiber and thermoplastic resin.
[0046] Among them, Figure 3 As shown, taking a set of upper punch and lower die groove as an example, their dimensional relationship satisfies:
[0047]
[0048]
[0049] in:
[0050] a is the height of the outer side of the upper pressure head;
[0051] b is the height of the inner side of the upper pressure head;
[0052] c is the outer depth of the lower die groove;
[0053] d is the inner depth of the lower die groove;
[0054] e is the width of the upper punch and lower die groove;
[0055] 1 / n is the slope of the upper pressure head;
[0056] 1 / m is the slope of the lower die groove;
[0057] x is the powder volume compression rate.
[0058] Example 2
[0059] In another typical embodiment of the present application, a press for asymmetric brick bodies is provided, which includes the brick-making mold in embodiment one and also includes a feeder, wherein the feeder is arranged above the brick-making mold and feeds material into the forming brick groove of the lower mold groove.
[0060] When making bricks, the operating steps of this embodiment are:
[0061] 1. Prepare the lower die groove and bottom plate and clean them;
[0062] 2. Push in the pallet;
[0063] 3. Start the driving motor and push out the limiting piece;
[0064] 4. Open the feeder and transfer the material into the lower die slot;
[0065] 5. Lower the upper pressure head and fit it to the material so that the material in the lower die groove does not move;
[0066] 6. Reclaim the limited material sheet;
[0067] 7. Apply pressure to the upper pressure head to shape the material;
[0068] 8. Lift the upper pressure head;
[0069] 9. Lift the lower die groove;
[0070] 10. Push out the base plate and bricks to complete the production.
[0071] It should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Those skilled in the art will appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A brick-making mold for asymmetric bricks, characterized in that: It includes an upper pressing head, a lower die groove, a limiting device and a bottom plate; the lower die groove is arranged below the upper pressing head, the lower die groove includes a forming brick groove and a cavity in the middle, and the limiting device is arranged inside the lower die groove; The limiting device includes a plurality of limiting pieces and a driving mechanism, wherein the driving mechanism is used to drive the limiting pieces to switch between a blocking state and a retracting state. In the blocking state, the limiting pieces are inserted into the forming brick groove from the side and divide the forming brick groove into a plurality of spaces along the direction of groove depth change; in the retracting state, the limiting pieces are completely located inside the cavity. The bottom plate is installed below the lower die groove, and a supporting plate is provided on the bottom plate for receiving the pressed asymmetric brick body.
2. A brick-making mold for an asymmetric brick body according to claim 1, characterized in that: The inner side wall of the lower mold groove is provided with a plurality of long strip holes, and the limiting piece extends into the forming brick groove from the long strip holes, and the width and height of the long strip holes match the limiting piece.
3. A brick-making mold for an asymmetric brick body according to claim 2, characterized in that: The width of the elongated holes is 1-2 mm.
4. A brick-making mold for an asymmetric brick body according to claim 1, characterized in that: The material limiting pieces and the driving mechanism are both arranged in the cavity; the material limiting pieces are provided in two groups, the two groups of material limiting pieces are symmetrically arranged and move in opposite directions when switching states.
5. A brick-making mold for an asymmetric brick body according to claim 4, characterized in that: There is a certain interval between the two groups of limiting pieces, and the interval distance is not less than the groove width of the forming brick groove.
6. A brick-making mold for an asymmetric brick body according to claim 1, characterized in that: The driving mechanism includes a driving motor, a transmission rack and a transmission gear. The output shaft of the driving motor is connected to the central shaft of the transmission gear. The transmission gear is meshed with the transmission rack for transmission. The transmission rack is fixedly connected to the material limiting piece.
7. A brick-making mold for an asymmetric brick body according to claim 1, characterized in that: The upper pressing heads are provided with two symmetrical groups, and the height of the two groups of upper pressing heads gradually increases from the middle to the two sides; the lower die grooves are arranged corresponding to the upper pressing heads, and the lower die grooves are provided with two symmetrical groups, and the groove depth of the two groups of lower die grooves gradually decreases from the middle to the two sides.
8. A brick-making mold for asymmetric bricks according to claim 1, characterized in that: The upper pressing head and the lower die groove are both made of stainless steel.
9. A brick-making mold for an asymmetric brick body according to claim 1, characterized in that: The material of the supporting plate is a composite material of glass fiber and thermoplastic resin.
10. A press for asymmetric bricks, characterized in that: It comprises the brick-making mold according to any one of claims 1 to 9, and also comprises a feeder, wherein the feeder is arranged above the brick-making mold.