A molding die for a medical corrugated pipe

Abstract

This utility model discloses a molding die for a medical corrugated tube, belonging to the field of corrugated tube technology. It includes a bottom mold, a top mold, and multiple mold cores. The bottom mold has an installation groove at the top center, and a positioning seat is engaged inside the installation groove. Multiple positioning holes for mounting the mold cores are provided on the positioning seat. Multiple lower forming cavities adapted to the mold cores are provided on the bottom mold. Multiple upper forming cavities adapted to the mold cores are provided at the bottom of the top mold. This utility model improves mold closing accuracy through dual positioning using guide pillars and guide holes, and alignment pillars and alignment holes. The mold cores are rigidly fixed by the snap-fit ​​groove and snap ring to prevent displacement. A single push of the pull ring can unlock all mold cores simultaneously, reducing replacement time by 70%. The positioning seat can be disassembled as a whole for easy batch maintenance. The sealing block and sealing groove have an interference fit, improving the sealing effect. Finally, the split sealing design prevents material from seeping into the gaps between the mold cores.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe technology, specifically to a molding die for a medical corrugated pipe. Background Technology

[0002] A bellows is a tubular elastic sensitive element made of foldable corrugated sheets connected along the folding and stretching direction. Bellows are widely used in construction, factory production, and instrumentation. Its main purpose is as a measuring element in pressure measuring instruments. It is elastic and converts pressure into displacement or force. Bellows have thin walls and high sensitivity, with a measuring range of tens of Pascals to tens of Megapascals. Its open end is fixed, while the sealed end is in a free state, and an auxiliary helical spring or leaf spring is used to increase elasticity.

[0003] The above-mentioned technical conditions still have defects: when the existing corrugated pipe is produced, the mold cannot easily remove the corrugated pipe from the mold core after the corrugated pipe is formed, thus reducing the production efficiency of the corrugated pipe.

[0004] Based on this, the present invention designs a molding die for a medical corrugated pipe to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a molding die for a medical corrugated tube to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a molding die for a medical corrugated tube, comprising a bottom die, a top die, and multiple mold cores. The bottom die has an installation groove at the top center, and a positioning seat is engaged inside the installation groove. The positioning seat has multiple positioning holes for installing the mold cores. The bottom die has multiple lower forming cavities adapted to the mold cores. The top die has multiple upper forming cavities adapted to the mold cores at its bottom. Sealing grooves are provided in both the lower and upper forming cavities. The top die has a groove at the bottom center for installing the positioning seat.

[0007] By adopting the above technical solution, rapid prototyping of corrugated pipes can be achieved.

[0008] Preferably, the mold core includes a central column, a molding core is connected to one side of the central column, a sealing block is fixedly connected to the central column, the sealing block is adapted to the sealing groove, a snap-fit ​​seat is fixedly connected to one side of the sealing block, the snap-fit ​​seat can be inserted into the interior of the positioning hole, and a snap-fit ​​groove is formed inside the snap-fit ​​seat.

[0009] By adopting the above technical solution, the mold core can be easily snapped into the mold, thereby improving the forming effect of the corrugated pipe.

[0010] Preferably, a drive frame is slidably arranged inside the positioning seat. A pull rod is fixedly connected to one side of the drive frame, and a pull ring is fixedly connected to one end of the pull rod. A return spring is arranged on one side of the drive frame and outside the pull rod. One end of the return spring is fixedly connected to the inner wall of the positioning seat. A positioning plate is fixedly connected inside the drive frame and on one side of each positioning hole. A telescopic column is slidably connected inside the positioning plate. A retaining ring is fixedly connected to one end of the telescopic column. The retaining ring is adapted to the retaining groove. A clamping spring is fixedly connected to the outside of the retaining ring. One end of the clamping spring is fixedly connected to the positioning plate.

[0011] By adopting the above technical solution, multiple mold cores can be disassembled in a single operation, improving the usability.

[0012] Preferably, guide posts are fixedly connected to the top four corners of the bottom mold, and four sets of guide holes adapted to the guide posts are opened inside the top mold.

[0013] By adopting the above technical solution, the alignment between the bottom mold and the top mold becomes more precise.

[0014] Preferably, an alignment post is fixedly connected to the bottom mold and located inside the mounting groove, and two sets of alignment holes are provided at the bottom of the positioning seat.

[0015] By adopting the above technical solution, the positioning seat can be positioned and installed.

[0016] In summary, this application has the following beneficial technical effects: the mold closing accuracy is improved by setting guide pillars and guide holes, and alignment pillars and alignment holes for dual positioning; the mold core is rigidly fixed by snap-fit ​​grooves and snap rings to avoid displacement; all mold cores can be unlocked at the same time by pushing the pull ring once, reducing replacement time by 70%; the positioning seat can be disassembled as a whole for easy batch maintenance; the sealing block and sealing groove are interference fit to improve the sealing effect; and finally, the split sealing design prevents material from seeping into the gap between the mold cores. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the split structure between the bottom mold and the top mold in this embodiment;

[0019] Figure 2 This is a schematic diagram of the top mold structure in this embodiment;

[0020] Figure 3This is a schematic diagram of the mold core structure in this embodiment;

[0021] Figure 4 This is a schematic diagram of the internal structure of the positioning seat in this embodiment.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Bottom mold; 2. Top mold; 3. Mold core; 31. Central column; 32. Molding core; 33. Sealing block; 34. Snap-fit ​​seat; 35. Snap-fit ​​groove; 4. Mounting groove; 5. Positioning seat; 6. Lower molding cavity; 7. Guide column; 8. Alignment column; 9. Positioning hole; 10. Groove; 11. Guide hole; 12. Upper molding cavity; 13. Sealing groove; 14. Drive frame; 15. Tie rod; 16. Tie rod; 17. Return spring; 18. Positioning plate; 19. Telescopic column; 20. Snap ring; 21. Clamping spring; 22. Alignment hole. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0026] A molding die for a medical corrugated tube includes a bottom mold 1, a top mold 2, and multiple mold cores 3. The multiple mold cores 3 are staggered on both sides of a positioning seat 5. An installation groove 4 is provided at the top center of the bottom mold 1. The positioning seat 5 is engaged inside the installation groove 4. Multiple positioning holes 9 for installing the mold cores 3 are provided on the positioning seat 5. After the mold cores 3 are aligned and installed, the positioning seat 5 is installed inside the installation groove 4. Multiple lower forming cavities 6 adapted to the mold cores 3 are provided on the bottom mold 1. Multiple upper forming cavities 12 adapted to the mold cores 3 are provided at the bottom of the top mold 2. Sealing grooves 13 are provided on both the lower forming cavities 6 and the upper forming cavities 12. A groove 10 for installing the positioning seat 5 is provided at the bottom center of the top mold 2.

[0027] Furthermore, the mold core 3 includes a central column 31, and a forming core 32 is connected to one side of the central column 31. It cooperates with the upper forming cavity 6 and the lower forming cavity 12 to form the bellows during die casting. A sealing block 33 is fixedly connected to the central column 31. The sealing block 33 is adapted to the sealing groove 13 to seal the forming area. A snap-fit ​​seat 34 is fixedly connected to one side of the sealing block 33. The snap-fit ​​seat 34 can be inserted into the positioning hole 9. A snap-fit ​​groove 35 is opened inside the snap-fit ​​seat 34.

[0028] Furthermore, a drive frame 14 is slidably arranged inside the positioning seat 5. A pull rod 15 is fixedly connected to one side of the drive frame 14. A pull ring 16 is fixedly connected to one end of the pull rod 15. A return spring 17 is arranged on one side of the drive frame 14 and outside the pull rod 15. One end of the return spring 17 is fixedly connected to the inner wall of the positioning seat 5. A positioning plate 18 is fixedly connected inside the drive frame 14 and on one side of each positioning hole 9. A telescopic column 19 is slidably connected inside the positioning plate 18. A retaining ring 20 is fixedly connected to one end of the telescopic column 19. The retaining ring 20 is adapted to the retaining groove 35 and can retain the mold core 3 inside the positioning hole 9. A clamping spring 21 is fixedly connected to the outside of the retaining ring 20. One end of the clamping spring 21 is fixedly connected to the positioning plate 18 and can reset the retaining ring 20, so as to realize the synchronous locking / releasing of all mold cores 3 and avoid individual operation.

[0029] Furthermore, guide pillars 7 are fixedly connected to the top four corners of the bottom mold 1, and four sets of guide holes 11 adapted to the guide pillars 7 are opened inside the top mold 2, which can increase the mold closing effect of the bottom mold 1 and the top mold 2.

[0030] Furthermore, a positioning post 8 is fixedly connected to the bottom mold 1 and located inside the mounting groove 4, and two sets of positioning holes 22 are opened at the bottom of the positioning seat 5, which can improve the positioning and installation effect of the positioning seat 5.

[0031] The implementation principle of this embodiment is as follows: the snap-fit ​​seat 34 of the mold core 3 is inserted into the positioning hole 9 of the positioning seat 5. The snap ring 20 automatically snaps into the snap-fit ​​groove 35 under the action of the clamping spring 21, realizing the quick locking of the mold core. The positioning seat 5 is aligned with the alignment post 8 of the bottom mold 1 through the bottom alignment hole 22 and snaps into the mounting groove 4. The guide hole 11 of the mold 2 is pressed down along the guide post 7 of the bottom mold 1, so that the upper molding cavity 12, the lower molding cavity 6 and the molding core 32 of the mold core 3 are completely fitted. The sealing block 33 is embedded in the sealing groove 13 to form a seal to prevent material overflow. The top of the positioning seat 5 is simultaneously embedded into the groove 10 of the top mold 2 to enhance the overall stability. The pull ring 16 is pushed to drive the drive frame 14 to compress the reset spring 17, drive the snap ring 20 to disengage from the snap-fit ​​groove 35, and the mold core 3 can be quickly pulled out.

[0032] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] 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 forming die for medical bellows comprising a bottom die (1), a top die (2) and a plurality of core pieces (3), characterized in that: The bottom mold (1) has an installation groove (4) at the top center, and a positioning seat (5) is engaged inside the installation groove (4). The positioning seat (5) has multiple positioning holes (9) for installing the mold core (3). The bottom mold (1) has multiple lower forming cavities (6) adapted to the mold core (3). The bottom mold (2) has multiple upper forming cavities (12) adapted to the mold core (3). The lower forming cavity (6) and the upper forming cavity (12) are both provided with sealing grooves (13). The bottom center of the top mold (2) has a groove (10) for installing the positioning seat (5).

2. A medical tube forming mold as defined in claim 1, wherein: The mold core (3) includes a central column (31), a molding core (32) is connected to one side of the central column (31), a sealing block (33) is fixedly connected to the central column (31), the sealing block (33) is adapted to the sealing groove (13), a snap-fit ​​seat (34) is fixedly connected to one side of the sealing block (33), the snap-fit ​​seat (34) can be inserted into the positioning hole (9), and a snap-fit ​​groove (35) is opened inside the snap-fit ​​seat (34).

3. A medical tube forming mold as defined in claim 2, wherein: A drive frame (14) is slidably arranged inside the positioning seat (5). A pull rod (15) is fixedly connected to one side of the drive frame (14). A pull ring (16) is fixedly connected to one end of the pull rod (15). A return spring (17) is arranged on one side of the drive frame (14) and outside the pull rod (15). One end of the return spring (17) is fixedly connected to the inner wall of the positioning seat (5). A positioning plate (18) is fixedly connected inside the drive frame (14) and on one side of each positioning hole (9). A telescopic column (19) is slidably connected inside the positioning plate (18). A retaining ring (20) is fixedly connected to one end of the telescopic column (19). The retaining ring (20) is adapted to the retaining groove (35). A pressing spring (21) is fixedly connected to the outside of the retaining ring (20). One end of the pressing spring (21) is fixedly connected to the positioning plate (18).

4. A medical tube forming mold as defined in claim 1, wherein: The bottom mold (1) is fixedly connected to the four corners of the top, and four sets of guide holes (11) adapted to the guide columns (7) are opened inside the top mold (2).

5. The forming mold for a medical corrugated pipe according to claim 1, characterized in that: The bottom mold (1) is fixedly connected to the inner side of the mounting groove (4) with a positioning column (8), and two sets of positioning holes (22) are provided at the bottom of the positioning seat (5).

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