Die for silica gel sheet microneedle

Abstract

The utility model discloses a mould for a silica gel sheet microneedle, which comprises a top frame, a lower mould and an upper mould, hydraulic rods are arranged on both sides of the middle of the top frame, the telescopic ends of the hydraulic rods are connected with the upper mould, a plurality of forming raised lines are arranged at the bottom of the upper mould, the detachable lower mould is arranged in the middle of the top end of a mould seat, and the lower mould is connected with the upper mould. And side lugs are arranged at the two ends of the mold base. The detachable lower die is arranged on the inner side of the die base, the inlaying heads are arranged at the two ends of the lower die, the lower die is convenient to assemble and disassemble through the inlaying heads, the microneedle grooves are formed in the top of the lower die, and the forming protruding strips are arranged at the bottom of the upper die. A plurality of microneedles can be simultaneously processed and formed through a plurality of forming convex strips and a plurality of microneedle grooves, a hot-pressing control box is arranged at the top of the upper mold, a control panel is arranged on the front surface of the hot-pressing control box, and the upper mold can be heated in real time through the hot-pressing control box, so that the hot-pressing forming effect of the microneedles can be improved.

Description

A mold for silicone sheet microneedles Technical Field

[0001] This utility model relates to the field of silicone sheet microneedle molds, specifically a mold for silicone sheet microneedles. Background Technology

[0002] Microneedle injection methods include direct injection and patch application. Microneedles on microneedle patches are generally soluble microneedles. Microneedles are a relatively new transdermal drug delivery device, typically consisting of a group of needles 25–2000 μm long arranged on a base. They achieve minimally invasive and painless drug delivery by piercing the stratum corneum of the skin. Microneedle technology has received increasing attention and widespread application in cosmetic procedures, particularly in microcrystalline eye patches. Currently, the main microneedle mold materials include stainless steel, silicone, silicon wafers, and PDMS. Stainless steel, silicone, and PDMS have advantages in preparing microneedle patches due to their low adhesion to the microneedle membrane and ease of separation.

[0003] For example, the authorized patent with publication number CN210817657U (3D Printed Stacked Microneedle Mold) includes: a male mold with a groove structure, comprising: a microneedle mold at the top of the groove, a matrix below the microneedle mold, a composite layer below the matrix, and the matrix located between the microneedle mold and the composite layer; the matrix is ​​used to transport material to the microneedle mold, wherein the matrix also includes: a matrix body connected to the microneedle mold at the top; and a guide hole opened inside the matrix body. This device, by using a male mold, facilitates molding, avoids the generation of difficult-to-remove air bubbles during liquid injection, has a simple structure, is easy to implement, is easy to integrate, and has good application value.

[0004] The existing molds described above cannot be disassembled and replaced for the microneedle forming process, making them inconvenient to use. The stamping process cannot be heated and controlled, resulting in low efficiency in hot pressing and inconvenience. Summary of the Invention

[0005] The purpose of this utility model is to provide a mold for silicone sheet microneedles, so as to solve the problems mentioned in the background art, such as the inability to disassemble and replace the mold core plate in the microneedle forming process, the inconvenience of use, the inability to control the heating in the stamping process, the low efficiency of hot pressing and the inconvenience of hot pressing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mold for silicone sheet microneedles, comprising a top frame, a lower mold, and an upper mold. Hydraulic rods are provided on both sides of the middle part of the top frame, and the telescopic ends of the hydraulic rods are connected to the upper mold. Multiple forming protrusions are provided at the bottom of the upper mold. A detachable lower mold is provided at the top center of the mold base, and side ears are provided at both ends of the mold base.

[0007] In a further embodiment, the top of the lower mold is provided with multiple micro-needle grooves, and multiple forming protrusions are arranged opposite to the multiple micro-needle grooves. The two ends of the lower mold are provided with multiple insert heads, and the insert heads are inlaid and assembled with the mold base by inlaying.

[0008] In a further embodiment, the bottom of the mold base is provided with a support base, and the bottom of the support base is provided with support pads.

[0009] In a further embodiment, a mounting hole is provided at the corner of the side ear, and a support rod is provided on the mounting hole.

[0010] In a further embodiment, both ends of the top frame are provided with mounting ears, and the top of the support rod is bolted to the mounting ears.

[0011] In a further embodiment, the top of the upper mold is provided with a hot press control box, the front of the hot press control box is provided with a control panel, and the bottom of the hot press control box is provided with a heating plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The mold base of this utility model is provided with a detachable lower mold on the inner side. Both ends of the lower mold are provided with insert heads, which facilitate the installation and disassembly of the lower mold. Multiple micro needle grooves are provided on the top of the lower mold, and multiple forming protrusions are provided on the bottom of the upper mold. Multiple micro needles can be processed and shaped simultaneously through multiple forming protrusions and multiple micro needle grooves.

[0014] 2. The upper mold of this utility model is equipped with a hot press control box on the top, and a control panel is provided on the front of the hot press control box. The upper mold can be heated in real time through the hot press control box, so as to improve the micro needle hot press molding effect. Attached Figure Description

[0015] Figure 1 is a structural schematic diagram of a silicone sheet microneedle mold according to the present invention;

[0016] Figure 2 is a top view of the lower mold of this utility model;

[0017] Figure 3 is a front view of the upper mold of this utility model;

[0018] Figure 4 is a top view of the lower mold of this utility model.

[0019] In the diagram: 1. Hydraulic rod; 2. Top frame; 3. Mounting ear; 4. Support rod; 5. Hot press control box; 6. Mold base; 7. Lower mold; 8. Support base; 9. Micro needle groove; 10. Side ear; 11. Mounting hole; 12. Insert head; 13. Upper mold; 14. Forming protrusion. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please refer to Figures 1-4. One embodiment of this utility model provides a mold for silicone sheet microneedles, including a top frame 2, a lower mold 7, and an upper mold 13. Hydraulic rods 1 are provided on both sides of the middle part of the top frame 2. The telescopic ends of the hydraulic rods 1 are connected to the upper mold 13. The bottom of the upper mold 13 is provided with multiple forming protrusions 14. The top center of the mold base 6 is provided with a detachable lower mold 7. Both ends of the mold base 6 are provided with side ears 10. The top frame 2 facilitates the installation of the hydraulic rods 1. The hydraulic rods 1 are used to press and control the upper mold 13, so that the upper mold 13 and the lower mold 7 interact to process and shape the silicone sheet microneedles. The side ears 10 facilitate the installation of the support rods 4.

[0022] The top of the lower mold 7 is provided with multiple micro-needle grooves 9, and multiple forming protrusions 14 are arranged opposite to the multiple micro-needle grooves 9. The two ends of the lower mold 7 are provided with multiple insert heads 12, and the insert heads 12 are inlaid and assembled with the mold base 6 by inlaying. The multiple micro-needle grooves 9 are used to interact with the multiple forming protrusions 14 to perform thermoforming of silicone sheet micro-needles. The insert heads 12 facilitate the installation of the lower mold 7 and the mold base 6. The bottom of the mold base 6 is provided with a support base 8, and the bottom of the support base 8 is provided with support feet. The support base 8 is used to stably support and place the mold base 6.

[0023] The side ear 10 has a mounting hole 11 at the corner, and a support rod 4 is provided on the mounting hole 11. The mounting hole 11 facilitates the installation and fixation of the support rod 4. The top of the top frame 2 has mounting ears 3 at both ends. The top of the support rod 4 is bolted to the mounting ears 3, and the mounting ears 3 facilitate the installation and fixation of the support rod 4.

[0024] The upper mold 13 is equipped with a hot press control box 5 on its top. The front of the hot press control box 5 is equipped with a control panel, and the bottom of the hot press control box 5 is equipped with an electric heating plate. The hot press control box 5 is used to hot press the upper mold 13.

[0025] Working principle: In use, the hydraulic rod 1 is placed on the top frame 2, and the support rod 4 is connected to the mounting ear 3. The top frame 2 facilitates the installation of the hydraulic rod 1. The hydraulic rod 1 controls the stamping of the upper mold 13. The forming protrusion 14 at the bottom of the upper mold 13 interacts with the micro-needle groove 9 on the lower mold 7, so that the thermo-pressing control box 5 provides electrothermal control for the upper mold 13. The support base 8 provides stable support for the mold seat 6. The insert head 12 facilitates the insertion and assembly of the lower mold 7 and the mold seat 6.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mold for silicone sheet microneedles, comprising a top frame (2), a mold base (6), a lower mold (7), and an upper mold (13), characterized in that: Hydraulic rods (1) are provided on both sides of the middle part of the top frame (2). The telescopic end of the hydraulic rod (1) is connected to the upper mold (13). The bottom of the upper mold (13) is provided with multiple forming protrusions (14). The top center of the mold base (6) is provided with a detachable lower mold (7). Both ends of the mold base (6) are provided with side ears (10).

2. The mold for silicone sheet microneedles according to claim 1, characterized in that: The top of the lower mold (7) is provided with multiple micro-needle grooves (9), and multiple forming protrusions (14) are arranged opposite to the multiple micro-needle grooves (9). The two ends of the lower mold (7) are provided with multiple inlay heads (12), and the inlay heads (12) are inlaid and assembled with the mold base (6) by inlaying.

3. The mold for silicone sheet microneedles according to claim 1, characterized in that: The bottom of the mold base (6) is provided with a support base (8), and the bottom of the support base (8) is provided with support pads.

4. The mold for silicone sheet microneedles according to claim 1, characterized in that: The side ear (10) has a mounting hole (11) at the corner, and a support rod (4) is provided on the mounting hole (11).

5. A mold for silicone sheet microneedles according to claim 4, characterized in that: The top frame (2) is provided with mounting ears (3) at both ends, and the top of the support rod (4) is bolted to the mounting ears (3).

6. A mold for silicone sheet microneedles according to claim 1, characterized in that: The top of the upper mold (13) is provided with a hot press control box (5), the front of the hot press control box (5) is provided with a control panel, and the bottom of the hot press control box (5) is provided with an electric heating plate.

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