Double-sided pressing device for terrazzo

Abstract

The utility model discloses a kind of terrazzo double-sided pressing devices, including bottom plate, the four corners of the bottom plate top are all fixedly connected with guide rod, the top of the guide rod is fixedly connected with the bottom of top plate, and is provided with top plate above the bottom plate.The utility model is set up guide rod between bottom plate and top plate, cooperate the sliding movable plate and limit rod, in combination with pressure detector, can accurately perceive pressing strength, ensure that the pressing force of upper and lower mould to terrazzo is evenly stable.Spring setting can form elastic constraint to limit rod, avoid rigid impact when pressing, driving mechanism can synchronously adjust the distance of upper and lower movable plate, realize double-sided pressing simultaneously, substantially improve pressing efficiency and product flatness, solve the uneven stress problem that traditional single-sided pressing is prone to, overall structure is stable and reliable, wide application range, the device has the advantages of good pressing effect and convenient demoulding.

Description

Technical Field

[0001] This utility model relates to the field of terrazzo technology, specifically to a terrazzo double-sided pressing device. Background Technology

[0002] Terrazzo, as a building decoration material that combines aesthetics and practicality, is widely used in floor and wall decoration. In its production process, the pressing of the blank is the core process that determines the product's density, flatness, and mechanical properties. The demolding efficiency and blank integrity rate after pressing directly affect the production rhythm and yield. Therefore, the performance of terrazzo pressing equipment is subject to dual requirements.

[0003] Existing terrazzo pressing equipment still faces two major problems in practical applications, hindering production quality and efficiency. Firstly, the pressing effect is unsatisfactory. Most equipment uses a single-sided pressing mode, where only the upper mold presses the blank downwards while the lower mold remains stationary. This results in uneven stress on the blank, leading to excessively high density at the top and a loose bottom. Consequently, the formed product is prone to warping and cracking, and the surface flatness is difficult to meet standards. Secondly, some equipment lacks precise pressure detection and feedback mechanisms, relying entirely on experience to adjust the pressing force. Excessive pressure can directly crush the blank, while insufficient pressure results in weak bonding, leading to particle loss during subsequent processing. Thirdly, in a few double-sided pressing devices, the upper and lower molds move asynchronously, easily causing misalignment during bonding, further reducing product precision.

[0004] On the other hand, the demolding process is cumbersome and easily damages the blank. After the traditional equipment is pressed, it often relies on manual labor to pry the mold or knock the blank to achieve demolding. This not only consumes manpower, but the rigid prying can easily cause the blank's edges and corners to crack and the surface to be scratched, resulting in a high scrap rate.

[0005] In summary, existing terrazzo pressing devices have significant shortcomings in terms of pressing uniformity, pressure accuracy, and ease of demolding. There is an urgent need to design a device that can achieve uniform double-sided pressing, precise pressure control, and efficient and non-destructive demolding to solve the above-mentioned technical pain points and improve the quality and production efficiency of terrazzo products. Utility Model Content

[0006] To address the problems mentioned in the background section, the present invention aims to provide a terrazzo double-sided pressing device, which has the advantages of good pressing effect and easy demolding.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a terrazzo double-sided pressing device, comprising a base plate, guide rods fixedly connected to the four corners of the top of the base plate, a top plate provided above the base plate, the top of the guide rods fixedly connected to the bottom of the top plate, movable plates slidably connected to the upper and lower sides of the guide rods, limit rods slidably connected to the four sides inside the movable plates, a pressure detector fixedly connected to the bottom of the upper limit rod, an upper mold fixedly connected to the bottom of the pressure detector, a lower mold fixedly connected to the top of the lower limit rod, the lower mold cooperating with the upper mold, and tension springs fixedly connected to the sides of the upper and lower movable plates that are far apart from each other, the ends of the tension springs that are far away from the movable plates being fixedly connected to the limit rods, and a driving mechanism provided on the left side of the top of the base plate, the driving mechanism being able to adjust the upper and lower movable plates to move closer or further apart.

[0008] As a preferred embodiment of this utility model, each of the four corners of the bottom of the lower mold inner wall is provided with an opening, and a limit frame is slidably connected inside the opening. A lifting plate is provided at the bottom of the lower mold inner wall, and the top of the limit frame is fixedly connected to the bottom of the lifting plate. The limit frame fits against the lower mold, and the limit frame can ensure that the lifting plate can move stably up and down.

[0009] In a preferred embodiment of this utility model, the driving mechanism includes a driving box fixedly connected to the top left side of the base plate. Sliders are slidably connected to both the upper and lower sides inside the driving box. The right side of the slider is fixedly connected to the left side of the movable plate. A threaded rod with positive and negative threads is rotatably connected inside the driving box. The threaded rod with positive and negative threads is threadedly connected to the slider. A servo motor is fixedly connected to the top of the driving box. The output end of the servo motor is fixedly connected to the threaded rod with positive and negative threads.

[0010] As a preferred embodiment of this utility model, a bearing is fixedly connected inside the drive box, and the outer ring of the bearing is fixedly connected to the drive box, while the inner ring of the bearing is fixedly connected to the threaded rod.

[0011] In a preferred embodiment of this utility model, a top rod is fixedly connected to the top of the base plate, a circular opening is provided at the top of the movable plate located below, an opening is provided at the bottom of the inner wall of the lower mold, the top of the top rod passes through the circular opening and extends above the circular opening, and the diameter of the top rod is the same as the diameter of the opening.

[0012] As a preferred embodiment of this invention, the surface of the tension spring is provided with an anti-rust coating.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model employs a guide rod between the bottom and top plates, along with sliding movable plates and limiting rods. Combined with a pressure detector, it accurately senses the pressing force, ensuring uniform and stable pressing force from the upper and lower molds onto the terrazzo. The tension spring provides elastic constraint on the limiting rod, preventing rigid impacts during pressing. The drive mechanism synchronously adjusts the distance between the upper and lower movable plates, enabling simultaneous pressing on both sides. This significantly improves pressing efficiency and product flatness, solving the problem of uneven force distribution that often occurs with traditional single-sided pressing. The overall structure is stable and reliable, with a wide range of applications. This device offers advantages such as excellent pressing effect and easy demolding.

[0014] 2. This utility model, through the cooperation of the opening at the bottom of the inner wall of the lower mold and the limiting frame, can accurately guide the up and down movement of the lifting plate, effectively preventing the lifting plate from shifting or tilting during movement. This design ensures that the lifting plate remains horizontal during demolding or pressing, avoiding damage to the terrazzo blank or a decrease in molding accuracy due to instability of the lifting plate. It also improves the smoothness of the lifting operation, providing a stable foundation for subsequent demolding processes and ensuring consistent product quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the lower mold structure of this utility model; Figure 3 This is an exploded view of the lower mold and lifting plate structure of this utility model; Figure 4 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Base plate; 2. Guide rod; 3. Top plate; 4. Movable plate; 5. Limiting rod; 6. Pressure detector; 7. Upper mold; 8. Lower mold; 9. Lifting plate; 10. Through-hole; 11. Limiting frame; 12. Opening; 13. Push rod; 14. Drive box; 15. Slider; 16. Servo motor; 17. Tension spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 4As shown, a terrazzo double-sided pressing device includes a base plate 1. Guide rods 2 are fixedly connected to the four corners of the top of the base plate 1. A top plate 3 is provided above the base plate 1. The top of the guide rods 2 is fixedly connected to the bottom of the top plate 3. Movable plates 4 are slidably connected to the upper and lower sides of the surface of the guide rods 2. Limiting rods 5 are slidably connected to the four sides inside the movable plates 4. A pressure detector 6 is fixedly connected to the bottom of the upper limiting rod 5. An upper mold 7 is fixedly connected to the bottom of the pressure detector 6. A lower mold 8 is fixedly connected to the top of the lower limiting rod 5. The lower mold 8 works in conjunction with the upper mold 7. Tension springs 17 are fixedly connected to the sides of the upper and lower movable plates 4 that are away from each other. The ends of the tension springs 17 away from the movable plates 4 are fixedly connected to the limiting rods 5. A driving mechanism is provided on the left side of the top of the base plate 1. The driving mechanism can adjust the upper and lower movable plates 4 to move closer or further apart. A controller is provided on the outside of the device for controlling the device. The starting and stopping of each electrical appliance is controlled by a retractable protective sleeve on the surface of the threaded rod. This retractable protective sleeve prevents debris from adhering to the surface of the threaded rod. The controller, pressure detector 6, retractable protective sleeve, upper mold 7, and lower mold 8 mentioned above are all common existing technologies and are common knowledge to those skilled in the art. Therefore, this application will not elaborate on them. The standard parts used in this utility model can all be purchased from the market. The irregular parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts, and equipment all adopt conventional models in the existing technology. In addition, the circuit connection adopts conventional connection methods in the existing technology. Therefore, they will not be elaborated on them here. The contents not described in detail in this specification are existing technologies known to those skilled in the art. Therefore, this application will not elaborate on them one by one.

[0019] refer to Figure 3 The lower mold 8 has four openings 10 at the bottom corners of its inner wall. The openings 10 are connected to the limit frame 11, which slides up and down. The bottom of the lower mold 8 has a lifting plate 9. The top of the limit frame 11 is fixedly connected to the bottom of the lifting plate 9. The limit frame 11 fits against the lower mold 8, and the limit frame 11 can ensure that the lifting plate 9 can move up and down stably.

[0020] As a technical optimization of this utility model, the through-hole 10 at the bottom of the inner wall of the lower mold 8, in conjunction with the limiting frame 11, can precisely guide the up-and-down movement of the lifting plate 9, effectively preventing the lifting plate 9 from shifting or tilting during movement. This design ensures that the lifting plate 9 remains horizontal during demolding or pressing, avoiding damage to the terrazzo blank or a decrease in molding accuracy due to instability of the lifting plate 9. It also improves the smoothness of the lifting operation, providing a stable foundation for subsequent demolding processes and ensuring consistent product quality.

[0021] refer to Figure 1 The drive mechanism includes a drive box 14 fixedly connected to the top left side of the base plate 1. Slider 15 is slidably connected to both the upper and lower sides inside the drive box 14. The right side of the slider 15 is fixedly connected to the left side of the movable plate 4. A threaded rod with positive and negative threads is rotatably connected inside the drive box 14. The threaded rod with positive and negative threads is threadedly connected to the slider 15. A servo motor 16 is fixedly connected to the top of the drive box 14. The output end of the servo motor 16 is fixedly connected to the threaded rod with positive and negative threads.

[0022] As a technical optimization of this utility model, a servo motor 16 drives the forward and reverse threaded rod to rotate through the drive mechanism, causing the slider 15 to move the movable plate 4 synchronously in opposite directions, thus achieving precise synchronous adjustment of the upper and lower movable plates 4. This driving method ensures that the upper and lower molds 8 maintain symmetrical movement as they approach or move away, ensuring that the pressure on the terrazzo is always balanced and avoiding product deformation caused by inconsistent movement speed on one side. The precise control of the servo motor 16 also enables precise adjustment of pressure and displacement, meeting the pressing requirements of terrazzo of different specifications and improving the automation level and ease of operation of the device.

[0023] refer to Figure 1 The drive box 14 has a bearing fixedly connected inside, and the outer ring of the bearing is fixedly connected to the drive box 14, while the inner ring of the bearing is fixedly connected to the threaded rod.

[0024] As a technical optimization of this utility model, the bearing arrangement inside the drive box 14 effectively reduces the frictional resistance during the rotation of the threaded rod, reduces wear between components, and extends the service life of the threaded rod and the drive box 14. The bearing provides stable support for the threaded rod, preventing it from shaking or shifting during high-speed rotation or under load, ensuring the smooth movement of the slider 15, and thus ensuring the accuracy of the movement of the upper and lower movable plates 4. This design makes the drive mechanism run more smoothly, reduces maintenance frequency, and improves the overall reliability of the device.

[0025] refer to Figure 1 A push rod 13 is fixedly connected to the top of the base plate 1. A circular opening is provided at the top of the lower movable plate 4. An opening 12 is provided at the bottom of the inner wall of the lower mold 8. The top of the push rod 13 passes through the circular opening and extends to the top of the circular opening. The diameter of the push rod 13 is the same as the diameter of the opening 12.

[0026] As a technical optimization of this utility model, the push rod 13 at the top of the base plate 1 cooperates with the round opening of the movable plate 4 and the opening 12 of the lower mold 8. During demolding, as the lower movable plate 4 moves down, the push rod 13 can pass through the round opening and the opening 12 to lift the lifting plate 9, thus achieving automatic demolding of the terrazzo blank. This design eliminates the need for manual demolding, saving labor costs, avoiding potential damage to the blank caused by manual operation, and improving demolding efficiency, making the demolding process smoother.

[0027] refer to Figure 4 The surface of tension spring 17 is provided with an anti-rust coating.

[0028] As a technical optimization of this utility model, the anti-rust coating on the surface of the tension spring 17 effectively isolates it from air, moisture, and other corrosive substances, preventing corrosion during long-term use and extending its service life. This design ensures that the tension spring 17 can always provide a stable elastic force, ensuring that the limit rod 5 moves accurately and reliably during pressing and resetting, avoiding inaccurate mold positioning or fluctuations in pressing force caused by the failure of the tension spring 17 due to corrosion. It also reduces downtime for maintenance due to replacing the rusted tension spring 17, lowers equipment maintenance costs, and ensures the long-term stable operation of the device.

[0029] The working principle and usage process of this utility model are as follows: Before pressing, the operator pours the material into the top of the lifting plate 9 inside the lower mold 8 and flattens it. Then, the upper and lower movable plates 4 are adjusted to move closer together. At this time, the servo motor 16 on the top of the drive box 14 is activated. The servo motor 16 drives the internal threaded rod to rotate, and the slider 15, which is threaded to the threaded rod, slides synchronously in the opposite direction inside the drive box 14. The slider 15 drives the movable plates 4 on both sides to move smoothly along the guide rod 2. During the movement of the upper and lower movable plates 4, the internal limiting rod 5 moves synchronously, causing the upper mold 7 and lower mold 8 to gradually move closer until the bottom of the upper mold 7 presses against the top of the material. The pressure detector 6 senses the pressure on the upper mold 7 in real time and feeds the data back to the external controller, allowing the operator to accurately control the pressing force.

[0030] The tension spring 17 always provides elastic constraint to the limiting rod 5, preventing rigid impact when the mold contacts the material and ensuring stability during the pressing process. Once the pressure reaches the preset value, the servo motor 16 stops operating, and the device remains in the pressing state until the material is formed. After forming, the servo motor 16 rotates in the opposite direction, causing the threaded rods to rotate in the opposite direction. The slider 15 drives the movable plate 4 to move away from each other along the guide rod 2, and the tension spring 17 assists the limiting rod 5 in resetting the mold. As the lower movable plate 4 moves downward, the push rod 13 at the top of the base plate 1 gradually passes through the circular opening of the movable plate 4 and the opening 12 of the lower mold 8. The top of the push rod 13 contacts the bottom of the lifting plate 9 and pushes the lifting plate 9 upward. The limiting frame 11 inside the lower mold 8 slides synchronously along the through-hole 10, providing stable guidance for the lifting plate 9 and preventing it from tilting and damaging the blank. After the lifting plate 9 pushes the formed terrazzo blank out of the lower mold 8 to a certain height, the operator can safely remove the blank. After the blank is removed, the servo motor 16 restarts, causing the lower movable plate 4 to move upwards. The push rod 13 separates from the lifting plate 9. The operator gently presses down on the lifting plate 9, causing it to move the limit frame 11 back to its initial position at the bottom of the lower mold 8. Finally, the inside of the upper mold 7 and the lower mold 8 is cleaned to ensure no residual material remains, preparing for the next pressing.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A terrazzo double-sided pressing device, comprising a base plate (1), characterized in that: Guide rods (2) are fixedly connected to the four corners of the top of the base plate (1). A top plate (3) is provided above the base plate (1). The top of the guide rods (2) is fixedly connected to the bottom of the top plate (3). Movable plates (4) are slidably connected to the upper and lower sides of the surface of the guide rods (2). Limiting rods (5) are slidably connected to the four sides inside the movable plates (4). A pressure detector (6) is fixedly connected to the bottom of the upper limiting rod (5). An upper mold (7) is fixedly connected to the bottom of the pressure detector (6). A lower mold (8) is fixedly connected to the top of the lower limiting rod (5). The lower mold (8) works in conjunction with the upper mold (7). A tension spring (17) is fixedly connected to the side of the upper and lower movable plates (4) that is far away from each other. The end of the tension spring (17) that is far away from the movable plate (4) is fixedly connected to the limiting rod (5). A driving mechanism is provided on the left side of the top of the base plate (1). The driving mechanism can adjust the upper and lower movable plates (4) to move closer or further apart.

2. The terrazzo double-sided pressing device according to claim 1, characterized in that: The lower mold (8) has four openings (10) at the bottom corners of its inner wall. The openings (10) are connected to a limit frame (11) that slides up and down. The bottom of the lower mold (8) has a lifting plate (9). The top of the limit frame (11) is fixedly connected to the bottom of the lifting plate (9). The limit frame (11) fits against the lower mold (8). The limit frame (11) can ensure that the lifting plate (9) can move up and down stably.

3. The terrazzo double-sided pressing device according to claim 2, characterized in that: The driving mechanism includes a drive box (14) fixedly connected to the top left side of the base plate (1). Sliders (15) are slidably connected to the upper and lower sides inside the drive box (14). The right side of the slider (15) is fixedly connected to the left side of the movable plate (4). A threaded rod with positive and negative threads is rotatably connected inside the drive box (14). The threaded rod with positive and negative threads is threadedly connected to the slider (15). A servo motor (16) is fixedly connected to the top of the drive box (14). The output end of the servo motor (16) is fixedly connected to the threaded rod with positive and negative threads.

4. The terrazzo double-sided pressing device according to claim 3, characterized in that: The drive box (14) is internally fixedly connected to a bearing, and the outer ring of the bearing is fixedly connected to the drive box (14), and the inner ring of the bearing is fixedly connected to a threaded rod.

5. A terrazzo double-sided pressing device according to claim 4, characterized in that: The top of the base plate (1) is fixedly connected to a top rod (13), and the top of the movable plate (4) below it is provided with a round opening. The bottom of the inner wall of the lower mold (8) is provided with an opening (12). The top of the top rod (13) passes through the round opening and extends to the top of the round opening. The diameter of the top rod (13) is the same as the diameter of the opening (12).

6. A terrazzo double-sided pressing device according to claim 5, characterized in that: The surface of the tension spring (17) is provided with an anti-rust coating.

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