Medical injection mold convenient to demold

Abstract

The utility model relates to the technical field of injection molds, and discloses a medical injection mold convenient for demolding, which comprises a support, a circular disc is movably sleeved in the support, two groups of first support columns are fixedly connected to the inner side of the disc, and a connecting plate is movably sleeved outside the first support columns. According to the medical injection mold convenient to demold, a pushing plate is mounted at the rear end of the mold, the position of the pushing plate is adjusted, the pushing plate drives a movable sleeve to adjust the position in the mold, and when the movable sleeve is controlled to move towards the rear end, an opening is formed in the mold, that is, gas is injected into the mold and a forming material; and meanwhile, the mold is circularly pushed, that is, the movable sleeve drives air to be injected into the mold, and the material is pushed through the air to be subjected to demolding treatment, that is, in the demolding process, the situation that pressure is directly applied to the material, and consequently operation forming is abraded is avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a medical injection mold that is easy to demold. Background Technology

[0002] In the manufacturing process of medical devices, injection molds are used to process medical devices in order to improve the efficiency of medical device preparation. Medical device injection molding is a manufacturing technology that uses injection molding to produce medical device parts. Due to the strict requirements of medical devices for quality, precision and safety, injection molding technology has important application value in this field.

[0003] In the typical process of manufacturing medical devices using molds, after the medical device is formed inside the mold, it needs to be removed from the mold. However, since the medical device is filled into the mold by injection molding, and the injection material contains high temperature during the injection process, the high temperature will cause the air between the mold and the formed device to vaporize, resulting in a negative pressure between the mold and the device. The negative pressure will increase the adhesion between the device and the mold, making it difficult to demold and thus affecting the demolding efficiency. Therefore, we propose a demolding medical injection mold. Utility Model Content

[0004] To address the shortcomings of existing medical injection molds that facilitate demolding, this invention provides a medical injection mold that facilitates demolding. It features the advantage of creating an opening between the mold and the instrument by pushing a push plate and injecting air to reduce the negative pressure between the mold and the instrument, thereby making demolding and unloading more convenient. This solves the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a medical injection mold that is easy to demold, comprising a support, a circular disk movably fitted inside the support, two sets of first support columns fixedly connected to the inner side of the disk, a connecting plate movably fitted to the outer side of the first support columns, a positioning plate mounted on the inner side of the connecting plate via a rotating seat, a driving device for driving the positioning plate to rotate mounted on the outer side of the connecting plate, second support columns fixedly connected to both ends of the positioning plate, a hanging ear movably fitted to the outer side of the second support columns, a mold fixedly connected to the inner side of the hanging ear, a push plate movably fitted to one end of the mold, and a movable sleeve fixedly connected to the inner side of the push plate.

[0006] Preferably, the disk is circular, and a limiting nut is installed on the outside of the first support column, with the limiting nut installed on both sides of the connecting plate.

[0007] Preferably, the driving device includes a motor, which is fixedly connected to the outside of the connecting plate. A second gear is fixedly connected to one end of the motor output shaft, and a first gear is fixedly connected to the outside of the rotating seat. The first gear and the second gear mesh with each other.

[0008] Preferably, each set of positioning plates is equipped with a second support column on both sides, and the two sets of second support columns are aligned with each other.

[0009] Preferably, the positioning plate is equipped with a hydraulic rod for adjusting the position of the mold, the two sets of molds are installed in a matching manner, and an injection hole is installed on the outside of the connection between the two sets of molds.

[0010] Preferably, the mold has an injection groove on its inner side, and the injection groove has a hole inside. The movable sleeve installed on the inner side of the push plate is movably fitted into the hole.

[0011] Preferably, a spring is movably connected to the front end of the movable sleeve, a push rod is installed between the movable sleeve and the spring, and the end of the spring is kept parallel to the inner wall of the mold.

[0012] Compared with existing medical injection molds that are easy to demold, this invention has the following advantages:

[0013] 1. This easy-to-demold medical injection mold has a push plate installed at the rear end of the mold. Adjusting the position of the push plate causes the movable sleeve inside the mold to be adjusted. When the movable sleeve moves to the rear end, an opening is formed inside the mold, allowing gas to be injected into both the mold and the molding material. This prevents the material from being unable to be removed due to negative pressure between the material and the mold. At the same time, the mold is circulated and pushed, meaning the movable sleeve drives the air inside the mold to be injected. The air pushes the material for demolding. In this way, direct pressure is avoided on the material during demolding, which could cause wear to the molding process.

[0014] 2. This easy-to-demold medical injection mold uses a positioning plate to drive the second support column to align and install, while simultaneously controlling the mold closing process of the two sets of molds. The two sets of molds carry the material for injection molding. When demolding is required, the motor is started to control the positioning plate to flip, that is, the positioning plate drives the two sets of molds to face, and then the molded material is automatically demolded downwards under the action of gravity, further improving demolding efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3This is a schematic cross-sectional view of the main body of this utility model;

[0018] Figure 4 This is a partial cross-sectional view of the mold of this utility model;

[0019] Figure 5 This is an enlarged structural diagram of point A in this utility model.

[0020] In the diagram: 1. Bracket; 2. Disc; 3. First support column; 4. Connecting plate; 5. Rotary seat; 6. Positioning plate; 7. First gear; 8. Motor; 9. Second gear; 10. Hydraulic rod; 11. Second support column; 12. Hanging lug; 13. Mold; 14. Push plate; 15. Movable sleeve; 16. Push rod; 17. Spring. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A medical injection mold for easy demolding includes a support 1. A circular disc 2 is movably fitted inside the support 1. The disc 2 rotates, adjusting the angle of the mold. Two sets of first support columns 3 are fixedly connected to the inner side of the disc 2. A connecting plate 4 is adjusted to the position outside the first support columns 3. The connecting plate 4 is movably fitted to the outside of the first support columns 3. A positioning plate 6 is mounted on the inner side of the connecting plate 4 via a rotating seat 5. A driving device is mounted on the outside of the connecting plate 4 to drive the positioning plate 6 to rotate. The driving device controls the angle adjustment of the positioning plate 6, and simultaneously, the positioning plate 6 causes the mold 13 to flip. The two ends of the positioning plate 6 are fixedly connected to... The second support column 11 has a hanging lug 12 movably sleeved on its outside. The inner side of the hanging lug 12 is fixedly connected to the mold 13. After the two sets of molds 13 are closed, an injection space is formed. One end of the mold 13 is movably sleeved with a push plate 14. The inner side of the push plate 14 is fixedly connected to a movable sleeve 15. Adjusting the position of the push plate 14 will synchronously adjust the position of the movable sleeve 15, thus forming an opening on the inner side of the mold 13. This prevents the material from being blocked inside the mold 13 due to negative pressure. The push plate 14 is pushed in a cycle, which means that the push plate 14 drives the spring 17 to apply pressure to the molding material, thus driving the material to be removed from the mold 13.

[0023] Please see Figure 1 The disc 2 is circular, and a limit nut is installed on the outside of the first support column 3. The limit nut is installed on both sides of the connecting plate 4. By adjusting the angle of the disc 2, the angle of the entire mold can be rotated. During the injection process, the slurry is kept sufficient when filling the mold. At the same time, when controlling the injection and demolding of the mold, the position of the connecting plate 4 outside the first support column 3 is adjusted, that is, during the control of the rotation of the positioning plate 6, mutual interference is avoided.

[0024] Please see Figure 5 The drive device includes a motor 8, which is fixedly connected to the outside of the connecting plate 4. One end of the output shaft of the motor 8 is fixedly connected to a second gear 9. The outside of the rotating seat 5 is fixedly connected to a first gear 7. The first gear 7 and the second gear 9 mesh with each other. By starting the drive device, the drive device controls the motor 8 to start. The motor 8 drives the second gear 9 to rotate. The second gear 9 meshes with the first gear 7. Then the first gear 7 drives the positioning plate 6 to rotate. The positioning plate 6 drives the mold 13 to rotate, ensuring the convenience of adjusting the mold 13 during rotation.

[0025] Please see Figure 1 Each positioning plate 6 has a second support column 11 installed on both sides. The two sets of second support columns 11 are aligned with each other. By installing the second support columns 11 on the inner side of the positioning plate 6, when the two sets of equipment need to be closed, the two sets of second support columns 11 are aligned. At the same time, the second support columns 11 drive the position of the two sets of molds 13 to be calibrated. At the same time, when the two sets of molds 13 are closed, the alignment of the two sets of molds 13 is ensured.

[0026] Please see Figure 1 The positioning plate 6 has a hydraulic rod 10 installed inside to adjust the position of the mold 13. The two sets of molds 13 are installed in a matching manner. The injection hole is installed on the outside of the connection between the two sets of molds 13. By installing the hydraulic rod 10 inside the positioning plate 6, the hydraulic rod 10 is activated, and the hydraulic rod 10 drives the mold 13 to perform mold closing and mold opening.

[0027] Please see Figure 4 The mold 13 has an injection groove on its inner side, and the injection groove has a hole inside. The movable sleeve 15 installed on the inner side of the push plate 14 is movably sleeved inside the hole. The push plate 14 drives the movable sleeve 15 to extend into the hole. At the same time, the position of the push plate 14 is adjusted, and the position of the movable sleeve 15 driven by the push plate 14 is adjusted synchronously.

[0028] Please see Figure 4A spring 17 is movably connected to the front end of the movable sleeve 15. A push rod 16 is installed between the movable sleeve 15 and the spring 17. The end of the spring 17 is kept parallel to the inner wall of the mold 13. The spring 17 installed at the front end of the movable sleeve 15 blocks the inner wall of the mold 13 under the elastic action of the spring 17. At the same time, during injection molding, the rubber fills into the inner side of the mold 13 and applies pressure to the spring 17. The push rod 16 drives the push rod 16 to open a hole inside the mold 13 to provide an active range. When it is necessary to unload the material, the mold 13 is controlled to flip and the push plate 14 is pulled out. That is, the inner wall of the mold 13 forms an opening. After the gas flows, it effectively avoids the formation of negative pressure between the molding material and the mold 13, which would prevent it from being removed. At the same time, the push plate 14 is squeezed inward and the spring 17 is controlled to apply pressure to the molding material, which can then drive the material to be unmolded from the inside of the mold 13.

[0029] Working principle: When in use, start motor 8 to control the second support column 11 to align and install, and at the same time adjust the position of connecting plate 4 inside the first support column 3, that is, drive the two sets of second support columns 11 to fit together and fix. Start hydraulic rod 10, hydraulic rod 10 controls mold 13 to move inward, the two sets of mold 13 are overlapped, and material can be injected into the inside of mold 13 through injection port. After the material contacts, control connecting plate 4 to move to both sides. Start motor 8 to control the second gear 9 to mesh with the first gear 7, that is, positioning plate 6 drives mold 13 to flip to the lower end, and at the same time move and adjust push plate 14. Push plate 14 drives movable sleeve 15 to move inside mold 13, that is, spring 17 applies pressure to molding material, and then the material can be taken out from inside mold 13.

[0030] 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 medical injection mold for easy demolding, comprising a support (1), wherein a circular disk (2) is movably sleeved inside the support (1), and two sets of first support columns (3) are fixedly connected to the inner side of the disk (2), and a connecting plate (4) is movably sleeved outside the first support columns (3), characterized in that: A positioning plate (6) is installed on the inner side of the connecting plate (4) via a rotating seat (5). A driving device for rotating the positioning plate (6) is installed on the outer side of the connecting plate (4). A second support column (11) is fixedly connected to both ends of the positioning plate (6). A hanging ear (12) is movably sleeved on the outer side of the second support column (11). A mold (13) is fixedly connected to the inner side of the hanging ear (12). A push plate (14) is movably sleeved on one end of the mold (13). A movable sleeve (15) is fixedly connected to the inner side of the push plate (14).

2. The medical injection mold for easy demolding according to claim 1, characterized in that: The disc (2) is circular, and a limiting nut is installed on the outside of the first support column (3). The limiting nut is installed on both sides of the connecting plate (4).

3. A medical injection mold for easy demolding according to claim 1, characterized in that: The driving device includes a motor (8), which is fixedly connected to the outside of the connecting plate (4). A second gear (9) is fixedly connected to one end of the output shaft of the motor (8), and a first gear (7) is fixedly connected to the outside of the rotating seat (5). The first gear (7) and the second gear (9) mesh with each other.

4. A medical injection mold for easy demolding according to claim 1, characterized in that: Each of the positioning plates (6) is equipped with a second support column (11) on both sides, and the two sets of the second support columns (11) are aligned with each other.

5. A medical injection mold for easy demolding according to claim 1, characterized in that: The positioning plate (6) is equipped with a hydraulic rod (10) for adjusting the position of the mold (13). The two sets of molds (13) are installed together, and an injection hole is installed on the outside of the connection between the two sets of molds (13).

6. A medical injection mold for easy demolding according to claim 1, characterized in that: The mold (13) has an injection groove on its inner side, and the injection groove has a hole inside. The movable sleeve (15) installed on the inner side of the push plate (14) is movably sleeved inside the hole.

7. A medical injection mold for easy demolding according to claim 1, characterized in that: A spring (17) is movably connected to the front end of the movable sleeve (15), and a push rod (16) is installed between the movable sleeve (15) and the spring (17). The end of the spring (17) is kept parallel to the inner wall of the mold (13).

Images