Auxiliary device convenient for overturning and prefabricating EH composite bone cement
By designing an auxiliary device including a sealing box and a sealing cover, the bubble problem caused by poor mold flip sealing is solved, and a higher quality mold flip effect is achieved, reducing the need for secondary trimming.
Patent Information
- Application Number
- CN202421684735.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-17
AI Technical Summary
The existing mold flip technology has poor sealing, which leads to air entering during the molding process and forming bubbles, resulting in a difference between the mold flip and the original, and requires secondary trimming.
An auxiliary device including a workbench, a sealing box, a gantry and a sealing cover plate is designed. The sealing cover plate of the sealing box is fitted with the top of the sealing box, and the inlet hopper and exhaust holes are used to ensure that the internal air is discharged when the EH composite bone cement is injected to prevent the formation of air bubbles.
It effectively prevents air from entering during mold turning, avoids bubble formation, improves the sealing and quality of mold turning, and reduces the need for secondary trimming.
Smart Images
Figure CN223000786U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mold turning, in particular to an auxiliary device for facilitating the prefabrication of EH composite bone cement mold turning. Background Technique
[0002] Mold turning refers to the process of repeating the production of a model through a series of technological processes on the original model. The production of the mold is an important step in the mold turning process, which determines the shape and quality of the final product.
[0003] Regarding the above-mentioned related technical problems, the inventor believes that the existing technology has the following defects: the existing mold turning technology places the model on a plane and encloses the model with partitions. This partition enclosure method has poor sealing performance and will introduce air during the process of pouring the solution into the partitions to form a mold, resulting in bubbles in the mold turning, differences from the original version, and the need for secondary trimming. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is: aiming at the disadvantages of poor sealing performance of the existing mold turning, air will enter during the forming process, resulting in bubbles in the mold turning, differences from the original version, and the need for secondary trimming, an auxiliary device for facilitating the prefabrication of EH composite bone cement mold turning is proposed.
[0005] To achieve the above purpose, the present application adopts the following technical scheme: an auxiliary device for facilitating the prefabrication of EH composite bone cement mold turning, including a workbench, support legs are fixedly connected to the four sides of the bottom of the workbench, a sealing box is fixedly connected to the top of the workbench, a storage groove is opened at the top of the sealing box, an extension plate is slidably connected inside the storage groove, the inner wall of the extension plate fits with the outer surface of the inner layer of the sealing box, a gantry is fixedly connected to the top of the workbench, a sealing cover plate is slidably connected inside the gantry, a feeding hopper is fixedly connected to the top of the sealing cover plate, and an exhaust hole is opened at the top of the sealing cover plate.
[0006] Preferably, first toothed plates are fixedly connected to both sides of the extension plate, through holes are opened on both sides of the sealing box, connecting rods are slidably connected inside the through holes, and second toothed plates are fixedly connected to one ends of the connecting rods.
[0007] Preferably, two hollow blocks are fixedly connected to both sides of the sealing box, limiting plates are slidably connected inside the hollow blocks, and two limiting grooves are opened at the top of the connecting rod.
[0008] Preferably, thrust springs are fixedly connected to both sides of the top of the limiting plate, and the top ends of the thrust springs are fixedly connected to the top ends inside the hollow blocks.
[0009] Preferably, two reset springs are fixedly connected to one side of the second toothed plate, and the other ends of the reset springs are fixedly connected to one side inside the receiving groove.
[0010] Preferably, a threaded rod is threadedly connected inside the gantry, and the bottom of the threaded rod is in contact with the top of the sealing cover plate.
[0011] Preferably, a tension spring is fixedly connected to the top of the sealing cover plate, and the top of the tension spring is fixedly connected to the bottom of the gantry.
[0012] The technical effects and advantages of the present utility model:
[0013] In the present utility model, the user places the model to be mold-turned into the inside of the sealing box, moves the sealing cover plate downward, so that the bottom of the sealing cover plate is in contact with the top of the sealing box to seal the top of the sealing box, fills the inside of the sealing box with EH composite bone cement through the feeding hopper. During the injection process of the EH composite bone cement, the air inside the sealing box will be discharged from the exhaust holes, preventing air from existing inside and causing bubbles in the mold-turning, and solving the problem of the need for secondary trimming of the model after mold pouring. Description of the drawings
[0014] Figure 1 is the front view of the present utility model;
[0015] Figure 2 is the cross-sectional view of the extension plate fixing structure of the present utility model;
[0016] Figure 3 is the present utility model Figure 2 The partial enlarged view at A in;
[0017] Figure 4 is the cross-sectional view of the limiting plate of the present utility model;
[0018] Figure 5 is the present utility model Figure 4 The partial enlarged view at B in.
[0019] Legend description: 1. Workbench; 2. Support leg; 3. Sealing box; 4. Extension plate; 5. Gantry; 6. Sealing cover plate; 7. Feeding hopper; 8. Exhaust hole; 9. First toothed plate; 10. Through hole; 11. Connecting rod; 12. Hollow block; 13. Limiting plate; 14. Limiting groove; 15. Thrust spring; 16. Reset spring; 17. Threaded rod; 18. Tension spring; 19. Receiving groove; 20. Second toothed plate. Detailed implementation manners
[0020] The present utility model will now be further described in detail with reference to the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.
[0021] Referring to Figure 1 and Figure 2 As shown, the present utility model provides a technical solution: an auxiliary device for facilitating the reverse molding prefabrication of EH composite bone cement, including a workbench 1. Support legs 2 are fixedly connected to the four corners of the bottom of the workbench 1. A sealing box 3 is fixedly connected to the top of the workbench 1. A storage groove 19 is opened at the top of the sealing box 3. An extension plate 4 is slidably connected inside the storage groove 19. The inner wall of the extension plate 4 is attached to the outer surface of the inner layer of the sealing box 3. A gantry 5 is fixedly connected to the top of the workbench 1. A sealing cover plate 6 is slidably connected inside the gantry 5. A feeding hopper 7 is fixedly connected to the top of the sealing cover plate 6. An exhaust hole 8 is opened at the top of the sealing cover plate 6. The user places the model to be reverse molded into the sealing box 3, moves the sealing cover plate 6 downward, so that the bottom of the sealing cover plate 6 is attached to the top of the sealing box 3 to seal the top of the sealing box 3. EH composite bone cement is filled into the sealing box 3 through the feeding hopper 7. During the injection of the EH composite bone cement, the air inside the sealing box 3 will be discharged from the exhaust hole 8, preventing air inside from causing bubbles in the reverse molding, and secondary trimming of the model is required during the casting; when the EH composite bone cement solidifies, move the sealing cover plate 6 upward to take out the reverse molded part inside. When the model is relatively tall, by moving the extension plate 4 upward, the height of the sealing box 3 is extended upward to make the model suitable for models of different heights.
[0022] Referring to Figure 3 As shown, in this embodiment: First toothed plates 9 are fixedly connected to both sides of the extension plate 4. Through holes 10 are opened on both sides of the sealing box 3. Connecting rods 11 are slidably connected inside the through holes 10. A second toothed plate 20 is fixedly connected to one end of the connecting rod 11. When the user adjusts the position of the extension plate 4 according to the height of the model, pull the connecting rod 11 to move the second toothed plate 20 outward, disengaging from the tooth openings of the first toothed plate 9 to release the limit on the extension plate 4. When the extension plate 4 moves to the appropriate position, push the connecting rod 11 to make the tooth blocks of the second toothed plate 20 enter the tooth openings of the first toothed plate 9 to limit the extension plate 4.
[0023] As shown in the reference figure, in this embodiment: Two hollow blocks 12 are fixedly connected to both sides of the sealing box 3. A limiting plate 13 is slidably connected inside the hollow block 12. Two limiting grooves 14 are formed at the top of the connecting rod 11. When the user adjusts the position of the extension plate 4 according to the height of the model, the limiting plate 13 is moved upward to disengage the limiting plate 13 from the inside of the limiting groove 14, releasing the limitation on the connecting rod 11. After pulling the connecting rod 11 to release the limitation on the extension plate 4, the limiting plate 13 is moved downward to make the limiting plate 13 enter the inside of the limiting groove 14, limiting the second toothed plate 20, which is convenient for the user to free both hands to adjust the position of the extension plate 4.
[0024] Refer to Figure 4 With Figure 5 As shown, in this embodiment: Thrust springs 15 are fixedly connected to both sides of the top of the limiting plate 13. The top ends of the thrust springs 15 are fixedly connected to the top end inside the hollow block 12. By installing the thrust springs 15 on the top of the limiting plate 13, the thrust springs 15 exert a continuous thrust on the limiting plate 13 to prevent the limiting plate 13 from disengaging from the inside of the limiting groove 14 due to the shaking during the injection of the EH composite bone cement, thus releasing the limitation on the second toothed plate 20.
[0025] Refer to Figure 3 As shown, in this embodiment: Two reset springs 16 are fixedly connected to one side of the second toothed plate 20. The other ends of the reset springs 16 are fixedly connected to one side inside the receiving groove 19. After the user adjusts the position of the extension plate 4, the limiting plate 13 is moved upward. Under the thrust of the reset springs 16, the second toothed plate 20 is pushed to move inward and enter the tooth openings of the first toothed plate 9 to limit the extension plate 4.
[0026] Refer to Figure 2 As shown, in this embodiment: A threaded rod 17 is threadedly connected inside the gantry 5. The bottom of the threaded rod 17 is in contact with the top of the sealing cover plate 6. After the user adjusts the position of the extension plate 4 according to the height of the model, the threaded rod 17 is rotated to make the threaded rod 17 move downward, and at the same time, the sealing cover plate 6 is pushed to move downward to be in contact with the top of the extension plate 4. At the same time, the threaded rod 17 limits the sealing cover plate 6 to prevent the sealing cover plate 6 from being pushed upward by the expansion during the curing of the internal EH composite bone cement.
[0027] Refer to Figure 2 As shown, in this embodiment: A tension spring 18 is fixedly connected to the top of the sealing cover plate 6. The top of the tension spring 18 is fixedly connected to the bottom of the gantry 5. After the EH composite bone cement inside the sealing box 3 solidifies, by rotating the threaded rod 17 in the reverse direction to release the limitation on the sealing cover plate 6, under the pulling force of the tension spring 18, the sealing cover plate 6 is pulled upward to facilitate the user to take out the internal mold.
[0028] Working principle: The user places the model to be molded into the interior of the sealing box 3, moves the sealing cover plate 6 downward so that the bottom of the sealing cover plate 6 fits against the top of the sealing box 3 to seal the top of the sealing box 3. Fill the interior of the sealing box 3 with EH composite bone cement through the feeding hopper 7. During the injection process of the EH composite bone cement slurry, the air inside the sealing box 3 will be discharged from the exhaust hole 8 to prevent air inside from causing bubbles in the mold. When demolding, the model needs to be trimmed again; when the EH composite bone cement solidifies, move the sealing cover plate 6 upward and take out the solidified mold inside. When the model is relatively tall, move the extension plate 4 upward to extend the height of the sealing box 3 upward so that the model is suitable for models of different heights. Pull the connecting rod 11 to move the second toothed plate 20 outward and disengage from the tooth opening of the first toothed plate 9 to release the limit on the extension plate 4. When the extension plate 4 moves to the appropriate position, push the connecting rod 11 to make the tooth block of the second toothed plate 20 enter the tooth opening of the first toothed plate 9 to limit the extension plate 4. Move the limiting plate 13 upward to disengage the limiting plate 13 from the interior of the limiting groove 14 to release the limit on the connecting rod 11. After pulling the connecting rod 11 to release the limit on the extension plate 4, move the limiting plate 13 downward to make the limiting plate 13 enter the interior of the limiting groove 14 to limit the second toothed plate 20. By installing a thrust spring 15 on the top of the limiting plate 13, the thrust spring 15 exerts a continuous thrust on the limiting plate 13 to prevent the shaking during the injection of the EH composite bone cement from causing the limiting plate 13 to disengage from the interior of the limiting groove 14 and releasing the limit on the second toothed plate 20. After adjusting the position of the extension plate 4, move the limiting plate 13 upward. Under the thrust of the reset spring 16, push the second toothed plate 20 to move inward and enter the tooth opening of the first toothed plate 9 to limit the extension plate 4. Rotate the threaded rod 17 to move the threaded rod 17 downward, and at the same time push the sealing cover plate 6 downward to fit against the top of the extension plate 4. At the same time, the threaded rod 17 limits the sealing cover plate 6 to prevent the EH composite bone cement inside from expanding and pushing the sealing cover plate 6 upward during the curing process. When the EH composite bone cement inside the sealing box 3 solidifies, reverse-rotate the threaded rod 17 to release the limit on the sealing cover plate 6. Under the pulling force of the tension spring 18, pull the sealing cover plate 6 upward.
[0029] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An auxiliary device for facilitating the prefabrication of EH composite bone cement molds, comprising a workbench (1), characterized in that: The bottom of the workbench (1) is fixedly connected to supporting legs (2) on all sides, the top of the workbench (1) is fixedly connected to a sealing box (3), the top of the sealing box (3) is provided with a storage groove (19), the interior of the storage groove (19) is slidably connected to an extension plate (4), the inner wall of the extension plate (4) is in contact with the outer surface of the inner layer of the sealing box (3), the top of the workbench (1) is fixedly connected to a gantry (5), the inner side of the gantry (5) is slidably connected to a sealing cover plate (6), the top of the sealing cover plate (6) is fixedly connected to a feed hopper (7), and the top of the sealing cover plate (6) is provided with an exhaust hole (8).
2. An auxiliary device for facilitating pre-molding of EH composite bone cement according to claim 1, characterized in that: Both sides of the extension plate (4) are fixedly connected to a first tooth plate (9), both sides of the sealing box (3) are provided with a through hole (10), the interior of the through hole (10) is slidably connected to a connecting rod (11), and one end of the connecting rod (11) is fixedly connected to a second tooth plate (20).
3. An auxiliary device for facilitating pre-molding of EH composite bone cement according to claim 2, characterized in that: Two hollow blocks (12) are fixedly connected to both sides of the sealing box (3), the interior of the hollow block (12) is slidably connected to a limit plate (13), and two limit grooves (14) are provided on the top of the connecting rod (11).
4. The auxiliary device for facilitating the prefabrication of EH composite bone cement mold according to claim 3, characterized in that: Both sides of the top of the limiting plate (13) are fixedly connected with thrust springs (15), and the top of the thrust spring (15) is fixedly connected to the top of the inside of the hollow block (12).
5. The auxiliary device for facilitating the prefabrication of EH composite bone cement mold according to claim 2, characterized in that: Two return springs (16) are fixedly connected to one side of the second tooth plate (20), and the other end of the return spring (16) is fixedly connected to one side inside the receiving groove (19).
6. The auxiliary device for facilitating the prefabrication of EH composite bone cement mold according to claim 1, characterized in that: The internal threads of the gantry (5) are connected to a threaded rod (17), and the bottom of the threaded rod (17) is in contact with the top of the sealing cover plate (6).
7. The auxiliary device for facilitating the prefabrication of EH composite bone cement mold according to claim 1, characterized in that: A tension spring (18) is fixedly connected to the top of the sealing cover plate (6), and the top of the tension spring (18) is fixedly connected to the bottom of the gantry (5).