A low-damage demoulding device and a preparation method of a glass fiber reinforced cement precast member using the device

Abstract

The present invention relates to a glass fiber reinforced cement precast member applied to the field of cement precast member production and a preparation method thereof. The precast member is made of the following raw materials in parts by weight: 30-50 parts of cement, 30-40 parts of quartz sand, 2-3 parts of chopped alkali-resistant glass fiber, 1-3 parts of tackifier, 2-4 parts of auxiliary agent, and 10-15 parts of mixing water. The preparation method includes: S1, mixing raw materials; S2, pouring the raw materials into a mold; S3, solidifying and demolding; S4, discharging the member; Step S3 involves a low-damage demolding device, and the low-damage demolding device includes: a vibration conveying mechanism, an orientation demolding mechanism, and an intelligent orientation demolding device. A demolding detection module and a reminder module are arranged on the intelligent orientation demolding device; through the intelligent orientation demolding device, the present application can automatically determine whether the precast member in the mold slot of the precast member is completely separated, and separate the corresponding precast member from the precast member mold through separate directional vibration, improving the demolding efficiency and increasing the qualified rate of the produced precast members.

Description

Technical Field

[0001] The present invention relates to the technical field of the production of cement precast components, and particularly to a low-damage demoulding device and a method for preparing glass fiber reinforced cement precast components using the device. Background Art

[0002] Glass fiber cement is a high-quality cement used for making glass fiber reinforced cement products or concrete. It can not only improve the alkali resistance of glass fibers but also reduce the erosion of cement on glass fibers. It is a new type of cement in the 21st century that combines multiple properties such as early strength, high strength, low alkalinity, impermeability, corrosion resistance, freeze-thaw resistance, carbonation resistance, micro-expansion and shrinkage compensation, negative temperature construction, and durable coloring, and can inhibit alkali-aggregate reaction.

[0003] In the prior art, when preparing cement precast components, the stirred and mixed concrete raw materials are poured into a precast component mold, and then a vibrator is used to compact the concrete raw materials in the precast component mold. After waiting for it to solidify, the solidified precast component is detached from the mold. To improve production efficiency, multiple slots are provided on a single precast component mold, as shown in the attached Figure 1 description, so as to produce precast components in batches. To facilitate the detachment of the solidified precast component from the mold, a water-based demoulding agent is pre-coated on the inner wall of the precast component mold, and a vibrating platform is used to drive the inverted precast component mold to vibrate and detach the precast component. In the actual operation process, due to the problem of the uniformity of the coating of the water-based demoulding agent and the problem that large-particle stones wear the water-based demoulding agent on the inner wall of the precast component mold when pouring the concrete raw materials, some precast components cannot be smoothly detached from the precast component mold. At this time, the power of the vibrating platform is increased to drive the entire precast component mold to vibrate, which will cause some precast components to be damaged and affect the qualified rate of the produced precast components. Application Content

[0004] In view of the above prior art, the technical problem to be solved by the present invention is that due to the problem of the uniformity of the coating of the water-based demoulding agent and the problem that large-particle stones wear the water-based demoulding agent on the inner wall of the precast component mold when pouring the concrete raw materials, some precast components cannot be smoothly detached from the precast component mold. At this time, the power of the vibrating platform is increased to drive the entire precast component mold to vibrate, which will cause some precast components to be damaged and affect the qualified rate of the produced precast components.

[0005] To solve the above problems, the present invention provides a glass fiber reinforced cement precast component, which is made of the following raw materials in parts by weight: 30-50 parts of cement, 30-40 parts of quartz sand, 2-3 parts of chopped alkali-resistant glass fiber, 1-3 parts of tackifier, 2-4 parts of auxiliary agent, and 10-15 parts of mixing water.

[0006] A preparation method of a glass fiber reinforced cement precast member, comprising the following steps: S1. Raw material mixing: Prepare raw materials in specified weight parts. Add cement and quartz sand into a mixer and mix evenly. Then dissolve an auxiliary agent and a thickener in mixing water, disperse chopped alkali-resistant glass fibers into the above-mentioned mixing water, and add the mixing water into the mixer while stirring until evenly mixed; S2. Pour the raw materials into a mold: Coat the inner wall surface of the precast member mold with a water-based demolding agent, and then pour the mixed raw materials obtained in step S1 into the precast member mold, and compact the mixed raw materials in the precast member mold by a vibrator; S3. Solidify and demold: After standing the precast member mold filled with the mixed raw materials for 10 to 24 hours for curing, invert it and transfer it to a low-damage demolding device for vibrating demolding; S4. Discharge the member: Separate the precast member mold from the precast member, and transport the precast member to a designated position for storage; The low-damage demolding device includes: a vibrating conveying mechanism, an orienting demolding mechanism and an intelligent orienting demolding device; The vibrating conveying mechanism includes a conveying table, conveying rollers installed on the conveying table and a vibrating platform; The orienting demolding mechanism includes an adjusting plate arranged above the vibrating platform, a plurality of adsorption air pipes vertically inserted into the adjusting plate, suction cups installed at the bottom of the adsorption air pipes, and a conduction rod. The adsorption air pipes correspond to the slots on the precast member mold. The plurality of adsorption air pipes are connected in series through a bundled air pipe. The input end of the bundled air pipe is externally connected to a negative pressure air pump. A conduction rod is connected to each adsorption air pipe. A telescopic cylinder with an output end connected to the adjusting plate is installed on the conveying table. A base is fixedly connected to the outer circle of the adsorption air pipe. A return spring is installed between the base and the adjusting plate. A distance sensor corresponding to the base is installed on the adjusting plate; The intelligent orienting demolding device is provided with a demolding detection module and a reminder module. The demolding detection module is electrically connected to the reminder module, the telescopic cylinder, the distance sensor and the negative pressure air pump respectively. A proximity sensor I for detecting the position of the precast member mold is installed on one side of the conveying table. The proximity sensor I is electrically connected to the demolding detection module.

[0007] In the above-mentioned glass fiber reinforced cement precast member and its preparation method, the intelligent orienting demolding device can automatically determine whether the precast member in the slot of the precast member mold is completely separated, and separate the corresponding precast member from the precast member mold through separate orienting vibration, improving the demolding efficiency and increasing the qualified rate of the produced precast members.

[0008] As a further improvement of the present application, one or more adsorption air pipes are correspondingly arranged for each slot on the precast member mold, and the return spring corresponds to the slot on the precast member mold.

[0009] As a further improvement of the present application, the adsorption air pipe is vertically and slidably inserted into the adjusting plate, and the adsorption air pipe is communicated with the bundled air pipe through a hose.

[0010] As another improvement of the present application, the low-damage demolding device further includes a directional vibration mechanism. The directional vibration mechanism includes a vibration plate installed above the adjustment plate and a vibration motor installed on the vibration plate. The upper end of the conduction rod penetrates the vibration plate, and a conduction cylinder fixed to the vibration plate is sleeved on the outer ring of each conduction rod. A conduction head matching the conduction cylinder is fixed at the top of the conduction rod.

[0011] As a supplement to another improvement of the present application, the diameter of the conduction head is the same as the inner diameter of the conduction cylinder. The conduction head is of a cylindrical structure, and an arc chamfer is provided on the inner ring of the top of the conduction cylinder.

[0012] As a supplement to another improvement of the present application, the lower end of the conduction rod is placed in the middle of the adsorption air pipe, and the bottom of the conduction rod is flush with the bottom of the suction cup. The adjustment plate and the vibration plate are connected by a connecting rod, and the connecting rod is made of an elastic material.

[0013] As a supplement to another improvement of the present application, a vibration conduction module is further provided on the intelligent directional demolding device. The vibration conduction module is electrically connected to the demolding detection module and the vibration motor respectively.

[0014] As a supplement to another improvement of the present application, a proximity sensor II corresponding to the adjustment plate is installed on the conveying table, and the proximity sensor II is electrically connected to the vibration conduction module.

[0015] In summary, through the adjustment plate, the corresponding adsorption air pipe can be driven to move upward, and by determining the position of the adsorption air pipe corresponding to the slot on the precast component mold and judging the misalignment distance between the adsorption air pipe and the adjustment plate, it can be determined whether the precast component in the slot of the precast component mold corresponding to the adsorption air pipe is completely detached. By separately controlling the vibration of the conduction rod corresponding to the adsorption air pipe, the vibration is transmitted to the corresponding slot of the precast component mold, and the corresponding precast component is separated from the precast component mold by separate directional vibration, improving the demolding efficiency and increasing the qualified rate of the produced precast components. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a precast component mold in the prior art;

[0017] Figure 2 It is a flow chart of the preparation method in the first and second embodiments of the present application;

[0018] Figure 3 It is an overall schematic diagram of the first and second embodiments of the present application;

[0019] Figure 4 It is a schematic diagram when the suction cup of the first and second embodiments of the present application adsorbs the precast component mold;

[0020] Figure 5Schematic diagram after the sucker drives the precast component mold to move upward in the first and second embodiments of the present application;

[0021] Figure 6 Schematic diagram of the positions of the adsorption air pipe and the bundled air pipe in the first and second embodiments of the present application;

[0022] Figure 7 Partial cross-sectional view of the directional vibration mechanism in the first and second embodiments of the present application;

[0023] Figure 8 In the first and second embodiments of the present application Figure 7 Enlarged view of part A;

[0024] Figure 9 Control principle block diagram of the intelligent directional demolding device in the first embodiment of the present application;

[0025] Figure 10 Schematic diagram of the position of the conduction head when the adsorption air pipe moves towards the adjusting plate in the first and second embodiments of the present application;

[0026] Figure 11 Schematic diagram of the position of the conduction head when the adsorption air pipe moves away from the adjusting plate in the first and second embodiments of the present application;

[0027] Figure 12 Control principle block diagram of the intelligent directional demolding device in the second embodiment of the present application.

[0028] Explanation of the reference numerals in the figure: 1. Precast component mold; 2. Conveyor table; 3. Intelligent directional demolding device; 4. Reminder module; 5. Adjusting plate; 6. Telescopic cylinder; 7. Proximity sensor II; 8. Vibration plate; 9. Vibration motor; 10. Adsorption air pipe; 11. Bundled air pipe; 12. Sucker; 13. Link; 14. Conduction head; 15. Conduction cylinder; 16. Conduction rod; 17. Return spring; 18. Base; 19. Distance sensor; 20. Proximity sensor I. Specific embodiments

[0029] The following describes the two embodiments of the present application in detail with reference to the accompanying drawings.

[0030] The first embodiment: Figures 2 - 8A glass fiber reinforced cement precast member is shown. The precast member is made of the following raw materials in parts by weight: 30-50 parts of cement, 30-40 parts of quartz sand, 2-3 parts of chopped alkali-resistant glass fiber, 1-3 parts of tackifier, 2-4 parts of auxiliary agent, and 10-15 parts of mixing water; its preparation method includes the following steps: S1. Raw material mixing: Prepare the specified parts by weight of raw materials. Add cement and quartz sand to a mixer and mix evenly. Then dissolve the auxiliary agent and tackifier in the mixing water, and then disperse the chopped alkali-resistant glass fiber into the above mixing water, and add the mixing water to the mixer, stirring while adding until evenly mixed; S2. Pour the raw materials into the mold: Coat the inner wall surface of the precast member mold 1 with a water-based release agent, and then pour the mixed raw materials obtained in step S1 into the precast member mold 1, and compact the mixed raw materials in the precast member mold 1 with a vibrator; S3. Solidify and demold: After standing the precast member mold 1 filled with the mixed raw materials for 10-24 h for curing, invert it and transfer it to a low-damage demolding device for vibrating demolding; S4. Discharge the member: Separate the precast member mold 1 from the precast member, and transport the precast member to a designated location for storage; Please refer to Figures 3 - 9 , the low-damage demolding device includes: a vibration conveying mechanism, an orientation demolding mechanism, and an intelligent orientation demolding device 3; the vibration conveying mechanism includes a conveying table 2, conveying rollers installed on the conveying table 2, and a vibration platform. Invert the precast member mold 1 with the solidified precast member on the conveying mechanism, move it to the vibration platform through the conveying rollers on the conveying mechanism, and drive the precast member mold 1 to vibrate and demold through the vibration of the vibration platform.

[0031] It is worth mentioning that the directional demoulding mechanism includes an adjusting plate 5 arranged above the vibration platform, a plurality of adsorption air pipes 10 vertically inserted into the adjusting plate 5, a suction cup 12 installed at the bottom of the adsorption air pipe 10, and a conduction rod 16. The adsorption air pipes 10 correspond to the slots on the precast member mold 1. The plurality of adsorption air pipes 10 are connected in series through a bundle air pipe 11. The input end of the bundle air pipe 11 is externally connected to a negative pressure air pump. A conduction rod 16 is connected to each adsorption air pipe 10. A telescopic cylinder 6 with an output end connected to the adjusting plate 5 is installed on the conveying table 2. A base 18 is fixedly connected to the outer circle of the adsorption air pipe 10. A return spring 17 is installed between the base 18 and the adjusting plate 5. A distance sensor 19 corresponding to the base 18 is installed on the adjusting plate 5. The telescopic cylinder 6 controls the up and down movement of the adjusting plate 5 by extending and shortening, thereby driving the adsorption air pipe 10 and the suction cup 12 to move away from or close to the back of the precast member mold 1. When the adsorption air pipe 10 and the suction cup 12 approach and fit the back of the slot of the precast member mold 1, a negative pressure can be generated in the bundle air pipe 11 through the negative pressure air pump so that the suction cup 12 adsorbs on the back of the slot of the precast member mold 1. At this time, the adjusting plate 5 can be lifted to drive the adsorption air pipe 10 to move upward, and the precast member mold 1 can be driven to move upward. Since each slot of the precast member mold 1 contains a precast member; when the precast member corresponding to the position adsorbed by the suction cup 12 is separated from the slot, the adjusting plate 5 can drive the corresponding adsorption air pipe 10 to move upward by a certain distance; when the precast member corresponding to the position adsorbed by the suction cup 12 is not completely separated from the slot, due to the gravity of the precast member, at this time, the adsorption air pipe 10 moves upward a small distance or remains in place. At this time, by judging the dislocation distance between the adsorption air pipe 10 and the adjusting plate 5, it can be determined whether the precast member in the slot of the precast member mold 1 corresponding to the adsorption air pipe 10 is completely separated, and by separately controlling the vibration of the conduction rod 16 corresponding to the adsorption air pipe 10, the vibration is transmitted to the corresponding slot of the precast member mold 1, and the corresponding precast member is separated from the precast member mold 1 by separate directional vibration, improving the demoulding efficiency. In traditional operations, usually, the vibration power of the vibration platform needs to be increased to perform normal demoulding, which easily causes the vibration power to be too large and damage the precast member. Therefore, the technical solution of this application can further increase the qualified rate of the produced precast members.

[0032] In this embodiment, a demolding detection module and a reminder module 4 are provided on the intelligent directional demolding device 3. The demolding detection module is electrically connected to the reminder module 4, the telescopic cylinder 6, the distance sensor 19, and the negative pressure air pump respectively. A proximity sensor one 20 for detecting the position of the precast component mold 1 is installed on one side of the conveying table 2. The proximity sensor one 20 is electrically connected to the demolding detection module. When the inverted precast component mold 1 moves to the vibration platform along with the conveying rollers on the conveying table 2, at this time, the vibration platform drives the precast component mold 1 to vibrate for demolding. The proximity sensor one 20 detects that the precast component mold 1 has moved to the vibration platform and sends the detected position information to the demolding detection module. After receiving the position information, the demolding detection module controls the telescopic cylinder 6 to contract. At this time, the adjusting plate 5 drives the adsorption air pipe 10 and the suction cup 12 to gradually approach the precast component mold 1. When the suction cup 12 fits onto the precast component mold 1, at this time, the distance sensor 19 detects that the distance between it and the base 18 has shortened and transmits the detected distance data to the demolding detection module. At this time, the demolding detection module determines that the suction cup 12 has contacted the back of the precast component mold 1. The demolding detection module controls the negative pressure air pump to work. The negative pressure air pump generates negative pressure so that the suction cup 12 fits and adsorbs on the back of the precast component mold 1. At the same time, the demolding detection module controls the telescopic cylinder 6 to extend, and the telescopic cylinder 6 controls the adjusting plate 5 and the adsorption air pipe 10 to move upward; at this time, the distance sensor 19 corresponding to the base 18 on the adsorption air pipe 10 transmits the detected distance data to the demolding detection module in real time; the demolding detection module compares the received distance data with the preset standard distance data (the demolding detection module presets the standard distance data between the base 18 on the corresponding adsorption air pipe 10 and the return spring 17 when the precast component is separated from the corresponding slot of the precast component mold 1). When the distance data is less than or equal to the standard distance data, at this time, the demolding detection module determines that the slot of the precast component mold 1 corresponding to this return spring 17 is separated from the precast component; when the distance data is greater than the standard distance data, at this time, the demolding detection module determines that the slot of the precast component mold 1 corresponding to this return spring 17 is not separated from the precast component. The demolding detection module sends a reminder signal that the slot of the precast component mold 1 corresponding to this return spring 17 is not separated from the precast component to the reminder module 4. The reminder module 4 issues a corresponding sound and light reminder. At this time, the conduction rod 16 corresponding to the return spring 17 can be vibrated separately to perform dynamic demolding on the slot of the precast component mold 1 that is not separated; when all the precast components on all the slots of the precast component mold 1 are separated, at this time, all the distance data sent by all the return springs 17 received by the demolding detection module are less than or equal to the standard distance data. Then the demolding detection module determines that the precast component is completely demolded from the precast component mold 1. At this time, the demolding detection module controls the negative pressure air pump to stop working and simultaneously sends a signal of complete demolding to the reminder module 4. The reminder module 4 issues a sound and light reminder of complete demolding.

[0033] In addition, one or more adsorption air pipes 10 are correspondingly arranged at the slot positions on each precast member mold 1, which can improve the stability of the suction cups 12 on the adsorption air pipes 10 for negative pressure adsorption on the back of each slot position, and can drive the slot positions on each precast member mold 1 to move up stably during the upward movement of the adjusting plate 5. The return spring 17 corresponds to the slot positions on the precast member mold 1. The adsorption air pipe 10 is vertically slidably inserted into the adjusting plate 5, and the adsorption air pipe 10 is movably connected to the adjusting plate 5. During the upward movement of the adjusting plate 5, the return spring 17 is driven to move up, and the return spring 17 will drive the base 18 and the adsorption air pipe 10 to move up. The adsorption air pipe 10 is connected to the bundled air pipe 11 through a hose, reducing the influence of the bundled air pipe 11 on the up and down displacement of the adsorption air pipe 10 and improving the accuracy of the distance sensor 19 detection.

[0034] The second implementation mode: Figures 7 - 8 and Figures 10 - 12 As shown, different from the first implementation mode, the low-damage demolding device further includes a directional vibration mechanism. The directional vibration mechanism includes a vibration plate 8 installed above the adjusting plate 5 and a vibration motor 9 installed on the vibration plate 8. The upper end of the conduction rod 16 penetrates through the vibration plate 8, and a conduction cylinder 15 fixed to the vibration plate 8 is sleeved on the outer circle of each conduction rod 16. A conduction head 14 matching the conduction cylinder 15 is fixed at the top of the conduction rod 16. When the vibration motor 9 works, it will drive the vibration plate 8 to vibrate. When the slot position on the precast member mold 1 has not been separated from the precast member, at this time, the position of the adsorption air pipe 10 corresponding to the slot position on the precast member mold 1 moves down relative to the adjusting plate 5, and the adsorption air pipe 10 will synchronously drive the conduction rod 16 to move down. At this time, the conduction head 14 located at the top of the conduction rod 16 is inserted into the conduction cylinder 15 and contacts the inner wall thereof. Therefore, the vibration on the vibration plate 8 will be transmitted to the conduction rod 16 and then to the slot position on the precast member mold 1 that has not been separated from the precast member, and directional vibration demolding is performed on this slot position; on the contrary, when the slot position on the precast member mold 1 has been separated from the precast member, the adjusting plate 5 will drive the adsorption air pipe 10 to move up. At this time, the conduction head 14 located at the top of the conduction rod 16 does not enter the middle of the conduction cylinder 15, and the vibration generated by the vibration plate 8 at this time will not be transmitted to the conduction rod 16; when the vibration motor 9 drives the vibration plate 8 to vibrate, the vibration is accurately and directionally transmitted to the slot position that has not been separated from the precast member, achieving the purpose of automatic detection and automatic directional demolding, which not only improves the demolding efficiency but also reduces the damage to the precast member.

[0035] Preferably, the diameter of the conduction head 14 is the same as the inner diameter of the conduction cylinder 15, so that the outer wall of the conduction head 14 can better contact the inner wall of the conduction cylinder 15. The conduction head 14 is of a cylindrical structure, and an arc chamfer is provided on the inner circle at the top of the conduction cylinder 15, so that the conduction head 14 can be better inserted into the inner cavity of the conduction cylinder 15. The lower end of the conduction rod 16 is placed in the middle of the adsorption air pipe 10, so that the adsorption air pipe 10 can drive the conduction rod 16 to move synchronously. The bottom of the conduction rod 16 is flush with the bottom of the suction cup 12. When the suction cup 12 at the bottom of the adsorption air pipe 10 contacts the back of the slot on the precast member mold 1, the bottom of the conduction rod 16 and the suction cup 12 contact the precast member mold 1 synchronously, and the vibration is transmitted to the precast member mold 1 through the conduction rod 16. The adjusting plate 5 and the vibrating plate 8 are connected by a connecting rod 13. The connecting rod 13 is made of an elastic material to reduce the influence of the vibration of the vibrating plate 8 on the adjusting plate 5, and the vibration is better transmitted to the designated part through the conduction rod 16.

[0036] It is worth mentioning that a vibration conduction module is also provided on the intelligent directional demolding device 3. The vibration conduction module is electrically connected to the demolding detection module and the vibration motor 9 respectively. When the demolding detection module controls the telescopic cylinder 6 to extend and the telescopic cylinder 6 controls the adjusting plate 5 and the adsorption air pipe 10 to move upward, the demolding detection module will send a vibration signal to the vibration conduction module. After receiving the vibration signal, the vibration conduction module will control the vibration motor 9 to work. The vibration motor 9 drives the vibrating plate 8 and the conduction cylinder 15 to vibrate. A proximity sensor two 7 corresponding to the adjusting plate 5 is installed on the conveying table 2. The proximity sensor two 7 is electrically connected to the vibration conduction module. When the telescopic cylinder 6 controls the adjusting plate 5 to move upward to the proximity sensor two 7, at this time, after the operation of directional vibration demolding, the adsorption air pipe 10 and the suction cup 12 will drive the precast member mold 1 to completely separate from the precast member. The proximity sensor two 7 transmits the detected position information of the adjusting plate 5 to the vibration conduction module. After receiving the position information, the vibration conduction module controls the vibration motor 9 to stop working and sends a demolding completion signal to the demolding detection module; after receiving the demolding completion signal, the demolding detection module controls the telescopic cylinder 6 to reset and the negative pressure air pump to stop working. At the same time, the demolding detection module sends an alarm signal of demolding completion to the reminder module 4, and the reminder module 4 sends out an audible and visual reminder of demolding completion after receiving the alarm signal.

[0037] Combined with the current actual requirements, the above-mentioned implementation manner adopted in this application, the protection scope is not limited to this. Within the knowledge scope of those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A low-damage demolding device, comprising: Vibrating conveying mechanism, directional demoulding mechanism and intelligent directional demoulding device (3); The vibrating conveying mechanism includes a conveying table (2), conveying rollers installed on the conveying table (2), and a vibrating platform; The directional demoulding mechanism includes an adjusting plate (5) arranged above the vibrating platform, a plurality of adsorption air pipes (10) vertically inserted into the adjusting plate (5), suction cups (12) installed at the bottom of the adsorption air pipes (10), and a conduction rod (16). The adsorption air pipes (10) correspond to the slots on the precast component mold (1). The plurality of adsorption air pipes (10) are connected in series through a bundled air pipe (11). The input end of the bundled air pipe (11) is externally connected to a negative pressure air pump. A conduction rod (16) is connected to each adsorption air pipe (10). A telescopic cylinder (6) with an output end connected to the adjusting plate (5) is installed on the conveying table (2). A base (18) is fixedly connected to the outer circle of the adsorption air pipe (10). A return spring (17) is installed between the base (18) and the adjusting plate (5). A distance sensor (19) corresponding to the base (18) is installed on the adjusting plate (5); The intelligent directional demoulding device (3) is provided with a demoulding detection module and a reminder module (4). The demoulding detection module is electrically connected to the reminder module (4), the telescopic cylinder (6), the distance sensor (19), and the negative pressure air pump respectively. A proximity sensor one (20) for detecting the position of the precast component mold (1) is installed on one side of the conveying table (2). The proximity sensor one (20) is electrically connected to the demoulding detection module.

2. The low-damage demolding device according to claim 1, wherein: One or more adsorption air pipes (10) are correspondingly arranged for each slot on the precast component mold (1). The return spring (17) corresponds to the slot on the precast component mold (1).

3. The low-damage demoulding device according to claim 2, characterized in that: The adsorption air pipe (10) is vertically and slidably inserted into the adjusting plate (5). The adsorption air pipe (10) is communicated with the bundled air pipe (11) through a hose.

4. A low-damage demoulding device according to claim 3, characterized in that: The low-damage demoulding device further includes a directional vibration mechanism. The directional vibration mechanism includes a vibration plate (8) installed above the adjusting plate (5), and a vibration motor (9) installed on the vibration plate (8). The upper end of the conduction rod (16) penetrates through the vibration plate (8). A conduction cylinder (15) fixed to the vibration plate (8) is sleeved on the outer circle of each conduction rod (16). A conduction head (14) matching the conduction cylinder (15) is fixed at the top of the conduction rod (16).

5. The low-damage demolding device according to claim 4, wherein: The diameter of the conduction head (14) is the same as the inner diameter of the conduction cylinder (15). The conduction head (14) is of a cylindrical structure. An arc chamfer is arranged on the inner circle of the top of the conduction cylinder (15).

6. The low-damage demoulding device according to claim 5, characterized in that: The lower end of the conduction rod (16) is placed in the middle of the adsorption air pipe (10). The bottom of the conduction rod (16) is flush with the bottom of the suction cup (12). The adjusting plate (5) and the vibration plate (8) are connected by a connecting rod (13). The connecting rod (13) is made of an elastic material.

7. The low-damage demolding device according to claim 6, characterized in that: The intelligent directional demoulding device (3) is further provided with a vibration conduction module. The vibration conduction module is electrically connected to the demoulding detection module and the vibration motor (9) respectively.

8. A low-damage demoulding device according to claim 7, characterized in that: A proximity sensor two (7) corresponding to the adjusting plate (5) is installed on the conveying table (2), and the proximity sensor two (7) is electrically connected to the vibration conduction module.

9. A method for preparing a glass fiber reinforced cement precast member using the low-damage demolding device described in claim 1, characterized in that: It includes the following steps: S1. Raw material mixing: Prepare raw materials in specified weight portions, add cement and quartz sand to a mixer and mix evenly. Then dissolve the auxiliary agent and tackifier in the mixing water, and then disperse the chopped alkali-resistant glass fiber into the above mixing water. Add the mixing water to the mixer while stirring until it is uniform. S2. Pour the raw materials into the mold: Coat the inner wall surface of the precast member mold (1) with a water-based release agent, and then pour the mixed raw materials obtained in step S1 into the precast member mold (1), and compact the mixed raw materials in the precast member mold (1) through a vibrator. S3. Solidify and demold: After standing the precast member mold (1) filled with the mixed raw materials for 10 - 24 hours for curing, invert it and transfer it to low-damage demolding equipment for vibration demolding. S4. Discharge the component: Separate the precast member mold (1) from the precast member, and transport the precast member to a designated location for storage.

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