Magnesium phosphate cement sample forming mold

Abstract

The utility model belongs to the technical field of magnesium phosphate cement, and discloses a magnesium phosphate cement sample forming mold, which aims at solving the problems in the prior art in the process of manufacturing and demolding of a magnesium phosphate cement sample, and comprises a bracket, a mold box is arranged on one side of the bracket in a sliding manner; a mounting plate is fixedly mounted on the other side of the support, an upper cover plate is detachably arranged on the top face of the mold box, a plurality of springs are mounted between the bottom face of the mold box and the mounting plate, a lifting assembly used for lifting the mold box is mounted between the mounting plate and the mold box, and limiting parts used for limiting the mold box are further mounted on the support and located on the two sides of the mold box. According to the utility model, the quick and safe demolding process is realized, and workers are prevented from being injured. The demolding device is simple in structure, manual demolding is not needed, and a special demolding overturning tool is not needed either.

Description

Technical Field

[0001] The utility model relates to the technical field of magnesium phosphate cement, and specifically to a forming die for magnesium phosphate cement specimens. Background Art

[0002] In traditional magnesium phosphate cement specimen products, the demoulding process is usually manually operated. Workers need to hold the die and turn it over, and promote the separation of the cement block by knocking or hitting the bracket. This method not only has low efficiency and requires a lot of physical labor, but also is extremely likely to cause labor injuries, such as safety accidents like finger smashing. In addition, the demoulding method relying on knocking often has poor effects, it is difficult to ensure the integrity and aesthetics of the surface of the cement product, and sometimes the specimen may be damaged due to improper operation.

[0003] Currently, there are also cases of using special die tipping devices. For example, the die tipping device for magnesium oxychloride cement boards disclosed in CN201921968170.3 can pour the magnesium cement board in the die box out of the die box, eliminating the situation where workers need to hold the die and turn it over for demoulding. However, firstly, using special tools is still relatively troublesome, and secondly, there is no need to use a special flipping and demoulding tool for cement specimens.

[0004] Therefore, there is an urgent need to provide a forming die for magnesium phosphate cement specimens to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the demoulding of magnesium phosphate cement specimens in the prior art, and provide a forming die for magnesium phosphate cement specimens.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A forming die for magnesium phosphate cement specimens includes a bracket. A die box is slidably installed on one side of the bracket, and a mounting plate is fixedly installed on the other side of the bracket. The top surface of the die box is detachably provided with an upper cover plate. A plurality of springs are installed between the bottom surface of the die box and the mounting plate. A lifting assembly for lifting the die box is installed between the mounting plate and the die box. Limit members for limiting the die box are also installed on both sides of the die box on the bracket.

[0008] Further, the limit member includes a limit plate rotatably connected to the bracket. Both ends of the limit plate are provided with rotating shafts, the rotating shafts are rotatably installed with the bracket, a first torsion spring is installed on the rotating shafts, one end of the first torsion spring is fixed to the limit plate, the other end of the first torsion spring is fixed to the bracket, and limit blocks are also fixed at both ends of the limit plate.

[0009] Furthermore, the lifting assembly includes first pulleys installed on the four sides of the mold box, second pulleys installed on the four sides of the mounting plate, fixing blocks fixed on the four legs of the bracket, and a pulling rope. A rotating shaft is installed on the side of the mounting plate away from the mold box. One end of the pulling rope is fixed to the fixing block, and the other end of the pulling rope is fixed to the rotating shaft after passing around the first pulley and the second pulley.

[0010] Furthermore, a handle is fixed on the rotating shaft.

[0011] Furthermore, a shoulder is provided on the rotating shaft, and a disc is installed at the bottom of the rotating shaft. The pulling rope is wound between the shoulder and the disc.

[0012] Furthermore, a rubber sealing strip is fixedly provided on one side of the bottom end of the upper cover plate located inside the mold box.

[0013] Furthermore, the limiting plate is in an L-shaped structure, and the first torsion spring is in a compressed state in its initial state.

[0014] The present utility model has the following beneficial effects compared with the prior art:

[0015] When demolding the present utility model, the bracket is flipped, and the mold box is pulled up through the lifting assembly. When the mold box is pulled up, the limiting member rotates 90 degrees under the action of the spring force. Then the mold box drops, and the limiting member contacts the outer shell of the mold box to limit the mold box, so that the cement inside makes a relative movement compared with the mold box through its own inertia and gravity to achieve demolding, promoting the separation of the cement block from the mold box, realizing a fast and safe demolding process, and preventing the staff from being injured. The structure of the present utility model is simple, without manual demolding and without using special demolding and flipping tools.

[0016] The lifting assembly of the present utility model reduces the pulling force required to lift the mold box through the cooperation of the rotating shaft and the pulley, not only simplifies the demolding operation, but also greatly reduces the labor intensity of the operator and improves the work efficiency.

[0017] The present utility model is provided with a spring between the mold box and the mounting plate to provide a greater impact force during the descent of the mold box, ensuring the fast demolding of the cement block.

[0018] The limiting plate of the present utility model is in an L-shaped structure. In the initial state, the first torsion spring is in a compressed state. One side of the limiting plate is attached to the mold box. After the entire bracket is flipped, under the action of the spring force and with the limitation of the limiting block, the limiting plate rotates 90 degrees. One side of the rotated limiting plate just contacts the edge of the opening cross-section of the mold box after it drops, but does not touch the cement block, ensuring the limitation of the mold box and promoting the separation of the cement block from the mold box. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the state of the demolding process of the present utility model.

[0020] Figure 2 This is a schematic diagram of the overall structure of the present utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the limiting member of the present utility model.

[0022] Figure 4 This is a schematic diagram of the usage state of the limiting plate of the present utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the rotating shaft of the present utility model.

[0024] The meanings of the reference numerals are as follows: 1. Bracket; 2. Upper cover plate; 3. Rubber sealing strip; 4. Lifting assembly; 41. First pulley; 42. Fixed block; 43. Second pulley; 44. Pulling rope; 45. Third pulley; 46. Handle; 47. Shoulder; 5. Spring; 6. Mounting plate; 7. Mold box; 8. Limiting member; 81. Limiting plate; 82. First torsion spring; 83. Limiting block. Specific embodiments

[0025] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0026] As Figures 1-5 shown, a magnesium phosphate cement specimen forming mold includes a bracket 1, a mold box 7 is slidably installed on one side of the bracket 1, a mounting plate 6 is fixedly installed on the other side of the bracket 1, an upper cover plate 2 is detachably (hinged or movable) installed on the top surface of the mold box 7, and a rubber sealing strip 3 is fixedly provided on one side of the bottom end of the upper cover plate 2 located inside the mold box 7.

[0027] A plurality of springs 5 are fixedly installed between the bottom surface of the mold box 7 and the mounting plate 6, a lifting assembly 4 for lifting the mold box 7 is installed between the mounting plate 6 and the mold box 7, the lifting assembly 4 includes first pulleys 41 installed on the four sides of the mold box 7, second pulleys 43 installed on the four sides of the mounting plate 6, fixed blocks 42 fixed on the four legs of the bracket 1, and a pulling rope 44. A rotating shaft 45 is rotatably installed on the surface of the mounting plate 6 away from the mold box 7. One end of the pulling rope 44 is fixed to the fixed block 42, and the other end of the pulling rope 44 is fixed to the rotating shaft 45 after passing around the first pulley 41 and the second pulley 43. A disc is installed at the bottom of the rotating shaft 45, and handles 46 are fixed on both sides of the disc. A shoulder 47 is further provided on the rotating shaft 45, and the pulling rope 44 is wound between the shoulder 47 and the disc.

[0028] On both sides of the mold box 7 on the support 1, there are also limit members 8 for limiting the mold box 7, and the limit members 8 can rotate 90°. The limit member 8 includes a limit plate 81 rotatably connected to the support 1. The two ends of the limit plate 81 are provided with rotating shafts, and the rotating shafts are rotatably installed on the support 1. A first torsion spring 82 is installed on the rotating shaft. One end of the first torsion spring 82 is fixed to the limit plate 81, and the other end of the first torsion spring 82 is fixed to the support 1. Limit blocks 83 are also fixed at both ends of the limit plate 81. The limit plate 81 is in an L-shaped structure, and the first torsion spring 82 is in a compressed state in its initial state.

[0029] The specific working process is as follows:

[0030] Pour cement into the mold box 7, and then snap the upper cover plate 2 into the mold box 7. The rubber sealing strip 3 plays a sealing role. After curing, first open the upper cover plate 2, and then turn the entire support 1 over. A soft pad can be laid at the bottom of the support 1. At this time, turn the handle 46. When rotating, the mold box 7 is driven to move upward through the pull rope 44. One end of the pull rope 44 is fixed, and an object is pulled through a pulley. The required pulling force will be much less than directly pulling the object. Therefore, the resistance can be greatly reduced. After the mold box 7 rises a certain distance and the limit plate 81 is separated from the mold box 7, it automatically rotates 90 degrees under the torsion of the first torsion spring 82. At this time, the horizontal end of the limit block 83 just fits with the support 1. Since the limit plate 81 is in an L-shaped structure, its horizontal end can just only contact the edge of the mold box 7 at this time. In this way, when the mold box 7 falls downward, the mold box 7 can be limited, so that the cement inside can be demolded by making a relative movement compared with the mold box 7 through its own inertia and gravity.

[0031] During the upward movement of the mold box 7, the spring 5 between the mold box 7 and the mounting plate 6 will be compressed. After the mold box 7 moves upward to an appropriate distance, release the handle 46. The mold box 7 moves downward under its own gravity and the elastic force of the spring 5. When the mold box 7 reaches the position of the limit plate 81, it blocks the mold box 7 (one side of the limit plate 81 just contacts the edge of the opening cross-section of the mold box 7, but does not touch the cement block). The mold box 7 suddenly stops, but the cement inside is demolded by making a relative movement compared with the mold box 7 through its own inertia and gravity. Repeat this process until complete demolding; thus effectively solving the problems that the existing magnesium phosphate cement is labor-consuming and has low efficiency during the demolding stage and is easy to hurt hands.

Claims

1. A magnesium phosphate cement sample forming mold, comprising a bracket (1), characterized in that: A mold box (7) is slidably mounted on one side of the bracket (1), and a mounting plate (6) is fixedly mounted on the other side of the bracket (1). The top surface of the mold box (7) is detachably provided with an upper cover plate (2). A plurality of springs (5) are mounted between the bottom surface of the mold box (7) and the mounting plate (6). A lifting component (4) for lifting the mold box (7) is mounted between the mounting plate (6) and the mold box (7). Limiting members (8) for limiting the position of the mold box (7) are also mounted on both sides of the bracket (1).

2. A magnesium phosphate cement sample forming mold according to claim 1, characterized in that: The limiting member (8) comprises a limiting plate (81) rotatably connected to the bracket (1), with rotating shafts provided at both ends of the limiting plate (81), the rotating shafts being rotatably mounted on the bracket (1), a first torsion spring (82) being mounted on the rotating shaft, one end of the first torsion spring (82) being fixed to the limiting plate (81), the other end of the first torsion spring (82) being fixed to the bracket (1), and limiting blocks (83) being fixed to both ends of the limiting plate (81).

3. A magnesium phosphate cement sample forming mold according to claim 2, characterized in that: The lifting assembly (4) comprises a first pulley (41) mounted on four sides of the mold box (7), a second pulley (43) mounted on four sides of the mounting plate (6), a fixing block (42) fixed on four legs of the bracket (1), and a pull rope (44). A rotating shaft (45) is rotatably mounted on a side of the mounting plate (6) away from the mold box (7). One end of the pull rope (44) is fixed to the fixing block (42), and the other end of the pull rope (44) is fixed to the rotating shaft (45) after passing through the first pulley (41) and the second pulley (43).

4. A magnesium phosphate cement sample forming mold according to claim 3, characterized in that: A handle (46) is fixed on the rotating shaft (45).

5. A magnesium phosphate cement sample forming mold according to claim 4, characterized in that: The rotating shaft (45) is provided with a boss (47), the bottom of the rotating shaft (45) is provided with a disc, and the pull rope (44) is wound between the boss (47) and the disc.

6. A magnesium phosphate cement sample forming mold according to claim 1, characterized in that: A rubber sealing strip (3) is fixedly provided on one side of the bottom end of the upper cover plate (2) located inside the mold box (7).

7. A magnesium phosphate cement sample forming mold according to claim 2, characterized in that: The limiting plate (81) has an L-shaped structure, and the first torsion spring (82) is initially in a compressed state.

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