Silica gel piece forming jig

Abstract

The utility model relates to the technical field of silica gel forming, and discloses a silica gel piece forming jig which comprises a forming jig base and a fixed die block, an isolation cylinder is installed in the forming jig base in a threaded mode, an electric push rod, a guide top plate, a top cylinder, a reset spring, an ejector pin and other assemblies are arranged in the forming jig base, a protective shell is installed at the top end of the base, and a refrigerator is arranged on the outer side of the base. During work, the fixed die block is installed through the positioning pin and the threaded connection column, the refrigerator and the gas diffuser are connected and debugged, when silica gel raw materials are injected, the stress column and the ejector pin ensure that a forming cavity is stable, and during the cooling stage, the gas diffuser is connected with the fixed die block through the conveying pipe. And after rapid cooling and curing are achieved through the refrigerator and the gas diffuser, the electric push rod drives the guide top plate and the like to drive the ejector pin to complete demolding, the reset spring auxiliary mechanism is reset, and accurate forming of the silica gel part can be efficiently achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to silica gel forming technical field, concretely to a silica gel part forming jig. BACKGROUND

[0002] Silica gel parts are widely used in electronic appliances, medical devices, automobile manufacturing and other fields due to their excellent elasticity, corrosion resistance and biocompatibility. In the production process of silica gel parts, forming jigs are indispensable key equipment. They fix and position silica gel materials and provide specific shapes and sizes for silica gel forming, ensuring product precision and consistency. As market demand for silica gel parts continues to grow and product specifications become increasingly diverse and precise, higher requirements are placed on the performance, efficiency and reliability of forming jigs.

[0003] However, traditional silica gel part forming jigs have shortcomings. In terms of positioning structure, traditional jigs often use simple mechanical positioning methods, making it difficult to achieve high-precision positioning. This leads to displacement or deformation of silica gel parts during the forming process, affecting product precision and yield. In terms of cooling systems, traditional jigs have low cooling efficiency and uneven cooling, resulting in long silica gel curing times, extended production cycles, and low production efficiency. They cannot meet large-scale production demands. In addition, the demolding mechanism of traditional jigs is not designed reasonably, which can easily damage silica gel parts during the demolding process. Moreover, the part reset precision is poor, and long-term use can lead to a decline in jig performance, increasing maintenance costs and downtime, which severely restricts the quality and efficiency of silica gel part production. Therefore, we propose a silica gel part forming jig. SUMMARY

[0004] (I) Technical problems solved

[0005] To address the shortcomings of existing technology, the utility model provides a silica gel part forming jig that solves the above problems.

[0006] (II) Technical solutions

[0007] To achieve the above-mentioned purposes, the utility model provides the following technical solutions: a silica gel part forming jig, comprising a forming jig base and a positioning module. An insulating cylinder is installed at the bottom end of the inside of the forming jig base. An electric push rod is provided at the bottom end of the inside of the insulating cylinder. A guide top plate is fixedly connected to the output shaft top end of the electric push rod. A plurality of top cylinders are provided at the top end of the guide top plate. A reset spring is provided inside the top cylinder. A top pin is inserted into the inside of the top cylinder, and the end of the top cylinder is in contact with the top end of the reset spring. A protective shell is provided at the top end of the forming jig base. Refrigerators are provided at the four ends of the outside of the protective shell. A gas diffusion machine is provided inside the protective shell. The gas diffusion machine is connected to the refrigerator through a conveying pipe. The gas diffusion machine is provided outside the insulating cylinder. A positioning module is installed at the top end of the protective shell by screwing. The bottom end face of the positioning module is in contact with the top end of the top pin.

[0008] Preferably, the top end of the forming jig base is fixedly provided with a protective shell, a through mounting hole is formed in the inner bottom end of the protective shell, and an isolation cylinder is inserted into the mounting hole, wherein the isolation cylinder is fixed to the forming jig base through bolts, an electric push rod is arranged at the inner bottom end of the isolation cylinder, the output shaft of the electric push rod is fixedly connected to the bottom end of a guide top plate, and the guide top plate is slidably connected to the isolation cylinder.

[0009] Preferably, a plurality of top cylinders in annular distribution are arranged at the top end of the guide top plate, a reset spring is arranged in the inner top cylinder, and a guide ring in the shape of a ring is arranged at the end of the top pin and is in abutment with the top end of the reset spring.

[0010] Preferably, screw thread connecting columns that are symmetric to each other are arranged at the top four ends of the protective shell, connecting holes that are symmetric to each other are formed in the four ends of a fixed mold, the fixed mold is inserted into the inner part of the protective shell, the screw thread connecting columns pass through the connecting holes and are fixed by cooperating with nuts, four force columns that are symmetric to the center are arranged in the inner part of the protective shell, the top end of the force column and the top end of the top pin are in abutment with the bottom end face of the fixed mold, and a forming cavity is formed in the inner part of the fixed mold.

[0011] Preferably, positioning cylinders are fixedly arranged at the top four corners of the protective shell, internal threads are formed in the inner part of the positioning cylinders, external threads are formed in the cylindrical surface at the end of a positioning pin, the end of the positioning pin is arranged in the inner part of the positioning cylinder, and the positioning pin is connected by cooperating with the internal and external threads.

[0012] Preferably, a placing table is fixedly arranged at the four end faces of the forming jig base, a refrigeration device is arranged at the top of the placing table, gas diffusion machines are arranged at the four ends in the inner part of the protective shell, and a conveying pipe penetrates through the protective shell and connects the refrigeration device and the gas diffusion machines.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the silicone part forming jig has the following beneficial effects:

[0015] 1. The silicone part forming jig realizes accurate installation of the fixed mold by cooperation of the screw thread connecting columns and the connecting holes, ensures stability of the forming cavity by cooperation of the force columns and the top pin, effectively avoids displacement and deformation of the silicone during injection, guarantees forming precision, simultaneously, the cooling system composed of the refrigeration device and the gas diffusion machines can quickly diffuse low-temperature gas to the forming area, the isolation cylinder further isolates external heat interference, provides a stable environment for internal components, greatly shortens the silicone cooling and solidification time, and significantly improves production efficiency.

[0016] 2、The silica gel part forming jig, the demolding mechanism composed of the electric push rod, the guide top plate, the top cylinder and the reset spring, after the silica gel is solidified, the electric push rod drives the guide top plate to stably rise, drives the ejector pin to eject the silica gel part, the reset spring guarantees that each component is accurately reset after demolding, the whole demolding process is stable and smooth, avoids causing damage to the silica gel part, each component cooperates, the cycle process from forming to demolding is stable and reliable, can effectively reduce the scrap rate, prolongs the service life of the jig. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the utility model;

[0018] Figure 2 It is a structure sectional view schematic view of the utility model;

[0019] Figure 3 It is Figure 2 A local enlarged schematic view in the utility model structure;

[0020] Figure 4 It is a forming jig base structure schematic view of the utility model;

[0021] Figure 5 It is a fixed module structure schematic view of the utility model.

[0022] In the drawing: 1, refrigeration device; 2, gas diffusion machine; 3, forming jig base; 4, insulation cylinder; 5, electric push rod; 6, guide top plate; 7, top cylinder; 8, reset spring; 9, ejector pin; 10, fixed module; 11, positioning pin; 12, protective shell; 13, positioning cylinder; 14, threaded connecting column; 15, stress column; 16, placing table; 17, connecting hole. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, apparently, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0024] Please refer to Figures 1-5The utility model provides a silica gel piece forming jig, including forming jig base 3 and fixed mould piece 10, the inside bottom end threaded mounting of forming jig base 3 has isolated cylinder 4, the inside bottom end of isolated cylinder 4 is provided with electric push rod 5, the output shaft top fixedly connected with guide top plate 6 of electric push rod 5, the top of guide top plate 6 is equipped with a plurality of top cylinder 7, the inside of top cylinder 7 is provided with reset spring 8, the tail end of thimble 9 is inserted in the inside of top cylinder 7, and the tail end of top cylinder 7 is pasted with the top of reset spring 8, the top of forming jig base 3 is equipped with protective shell 12, and the outside four ends of protective shell 12 are provided with refrigerator 1, and the inside of protective shell 12 is provided with gas diffusion machine 2, and gas diffusion machine 2 is connected with refrigerator 1 through the conveying pipe, and gas diffusion machine 2 is provided on the outside of isolated cylinder 4, and the top of protective shell 12 is threaded with fixed mould piece 10, and the bottom end surface of fixed mould piece 10 is pasted with the top of thimble 9.

[0025] Further, the top of forming jig base 3 is fixedly installed with protective shell 12, the inside bottom end of protective shell 12 is provided with a through mounting hole, and the mounting hole is inserted with isolated cylinder 4, wherein the isolated cylinder 4 is fixed with the forming jig base 3 by bolts, the inside bottom end of the isolated cylinder 4 is provided with an electric push rod 5, the output shaft of the electric push rod 5 is fixedly connected with the bottom end of the guide top plate 6, and the guide top plate 6 is slidingly fitted in the inside of the isolated cylinder 4, to stably support and protect the movement of the electric push rod 5 and the guide top plate 6, and to isolate external interference, to ensure accurate and reliable operation.

[0026] Further, the top of guide top plate 6 is provided with a plurality of annular top cylinders 7, the inside of top cylinder 7 is provided with reset spring 8, the tail end of thimble 9 is provided with a circular guide ring, the guide ring is arranged in the inside of top cylinder 7 and pastes with the top end of reset spring 8, in the demoulding, the guide top plate 6 can be driven to rise by the electric push rod 5, the silica gel piece is ejected by the thimble 9, and the reset spring 8 ensures the accurate reset of the thimble after demoulding, to realize stable, efficient and non-damage demoulding process.

[0027] Further, the top of protective shell 12 is provided with four thread connection columns 14 which are symmetric to each other, the fixed mould piece 10 is provided with four connection holes 17 which are symmetric to each other, the tail end of the fixed mould piece 10 is inserted into the inside of the protective shell 12, the thread connection column 14 passes through the connection hole 17 and is fixed by cooperating with the nut, the inside of the protective shell 12 is provided with four force columns 15 which are symmetric to the center axis, wherein the top end of the force column 15 and the top end of the thimble 9 are close to the bottom end surface of the fixed mould piece 10, the inside of the fixed mould piece 10 is provided with a forming cavity, to provide stable support for the forming cavity in the fixed mould piece 10, to ensure the structure stability in the silica gel forming process, to ensure the silica gel piece forming precision.

[0028] Further, the top four corners of the protective shell 12 are fixedly installed with positioning cylinders 13, the interiors of the positioning cylinders 13 are provided with internal threads, the end cylindrical surface of the positioning pin 11 is provided with external threads, the end of the positioning pin 11 is arranged in the interior of the positioning cylinder 13, and the internal and external threads are connected through cooperation, so that the positioning module 10 can be accurately positioned, the accuracy and stability of the installation position are ensured, and then reliable reference is provided for the molding of the silica gel part, and the molding precision is guaranteed.

[0029] Further, the four end faces of the molding jig base 3 are fixedly provided with placement tables 16, the top of each placement table 16 is provided with a refrigerator 1, the four ends of the interior of the protective shell 12 are provided with gas diffusion machines 2, and the conveying pipe penetrates through the protective shell 12 and connects the refrigerator 1 and the gas diffusion machine 2, so that the low-temperature refrigeration medium generated by the refrigerator 1 can be quickly and uniformly diffused to the molding area through the gas diffusion machine 2, efficient cooling of the silica gel molding process is realized, the molding cycle is effectively shortened, and the production efficiency is improved.

[0030] Structural description:

[0031] Refrigerator 1: The refrigerator 1 is installed on the top of the placement table 16 and is the core component of the cooling system, which is connected with the gas diffusion machine 2 through the conveying pipe and can generate low-temperature refrigeration medium;

[0032] Gas diffusion machine 2: The gas diffusion machine 2 is arranged in the interior of the protective shell 12, receives the low-temperature medium of the refrigerator 1, uniformly diffuses it to the molding area, and realizes efficient cooling;

[0033] Molding jig base 3: The molding jig base 3 is a jig basic support structure, the top end of which is installed with the protective shell 12, the four end faces of which are fixedly provided with the placement table 16, and the interior bottom end of which is threadedly installed with the isolation cylinder 4;

[0034] Isolation cylinder 4: The isolation cylinder 4 is threadedly installed in the interior of the molding jig base 3 and is fixed with the protective shell 12 through bolts, so as to isolate external heat and provide a stable working environment for the internal electric push rod 5 and the like;

[0035] Electric push rod 5: The electric push rod 5 is arranged at the inner bottom end of the isolation cylinder 4, the output shaft of which is connected with the guide top plate 6, the guide top plate 6 is driven through the extension and retraction movement, and the demolding power output is realized;

[0036] Guide top plate 6: The guide top plate 6 is connected with the output shaft of the electric push rod 5 and slides in the isolation cylinder 4, the top end of which is annularly distributed with the top cylinder 7, and the electric push rod power is transmitted to the ejector pin 9;

[0037] Top cylinder 7: The top cylinder 7 is annularly distributed at the top end of the guide top plate 6, the interior of which is provided with a reset spring 8 for installing the ejector pin 9 and assisting in realizing stable demolding and resetting;

[0038] Reset spring 8: Reset spring 8 is installed inside the top cylinder 7, and the end of the guide ring is in contact with the needle 9. After demolding, it provides a reset force to ensure the accurate return of the needle 9;

[0039] Needle 9: The end of the needle 9 is inserted into the top cylinder 7, and the top end is in contact with the bottom end face of the fixed mold module 10. When demolding, it pushes out the silicone part, which is a demolding component directly acting on the product;

[0040] Fixed mold module 10: The fixed mold module 10 is installed at the top of the protective shell 12 by threads, and a forming cavity is opened inside. The bottom end face is in contact with the needle 9, which determines the shape of the silicone part;

[0041] Positioning pin 11: The end of the positioning pin 11 has external threads, which cooperate with the internal threads of the top positioning cylinder 13 of the protective shell 12 to accurately position the fixed mold module 10 and ensure installation accuracy;

[0042] Protective shell 12: The protective shell 12 is fixed at the top of the forming jig base 3, and the external refrigeration device 1 is installed. The internal gas diffusion machine 2 is set, and the top is connected to the fixed mold module 10, which plays a protective and connecting role;

[0043] Positioning cylinder 13: The positioning cylinder 13 is fixed at the top of the protective shell 12 on four corners, and has internal threads inside, which cooperate with the positioning pin 11 to realize accurate positioning when the fixed mold module 10 is installed;

[0044] Threaded connection column 14: The threaded connection column 14 is symmetrically distributed at the top of the protective shell 12 on four ends, passes through the connecting hole 17 of the fixed mold module 10, cooperates with the nut to fix, and ensures the stable installation of the fixed mold module 10;

[0045] Stress column 15: The stress column 15 is symmetrically arranged on the central axis inside the protective shell 12, and the top end is in close contact with the bottom end face of the fixed mold module 10. It assists the needle 9 to support the forming cavity and ensures the stability of the forming;

[0046] Placing table 16: The placing table 16 is fixed on the four end faces of the forming jig base 3, which is used to bear the refrigeration device 1 and provides an installation basis for the cooling system components;

[0047] Connecting hole 17: The connecting hole 17 is symmetrically distributed on the four ends of the fixed mold module 10, and cooperates with the threaded connection column 14 at the top of the protective shell 12 to realize the stable connection of the fixed mold module 10 and the protective shell 12.

[0048] Working principle: in the forming preparation stage, the operator first uses the positioning pin 11 and the positioning cylinder 13 to accurately position the fixed mold block 10 at the top end of the protective shell 12, and then passes the threaded connecting column 14 through the connecting hole 17 of the fixed mold block 10, and fastens it with a nut to ensure that the fixed mold block 10 is stably installed. At this time, the forming cavity in the fixed mold block 10 forms a closed forming space with the protective shell 12 and the forming jig base 3. At the same time, the refrigerator 1 is placed on the top of the placing table 16 and connected with the gas diffusion machine 2 in the protective shell 12 through the conveying pipe, completing the basic debugging and connection of the equipment. In the silicone injection stage, the uniformly mixed liquid silicone raw material is injected into the forming cavity of the fixed mold block 10 through the injection device. In this process, the force column 15 and the top pin 9 are tightly attached to the bottom end surface of the fixed mold block 10, and the positioning pin 11 is guided with the fixed mold block, providing a stable support structure for the forming cavity to avoid displacement or deformation of the liquid silicone during injection, ensuring the forming precision. In the forming and cooling stage, after the raw material is injected, the refrigerator 1 is quickly started to send the low-temperature refrigeration medium to the gas diffusion machine 2 through the conveying pipe. The gas diffusion machine 2 uniformly diffuses the low-temperature gas to the outside of the isolation cylinder 4 to rapidly cool the forming area in all directions. The isolation cylinder 4 not only effectively isolates the external heat interference, but also provides a stable working environment for the internal electric push rod 5, guide top plate 6 and other components. During the cooling process, the top pin 9 always maintains the attachment with the bottom end surface of the fixed mold block 10 under the action of the return spring 8, ensuring that the silicone is solidified and formed in a stable state. In the demolding stage, when the silicone is completely solidified, the electric push rod 5 is started, and its output shaft pushes the guide top plate 6 upwards. Since the guide top plate 6 and the isolation cylinder 4 are in sliding fit, the guide top plate 6 can smoothly rise along the inside of the isolation cylinder 4, driving the top cylinder 7 and the top pin 9 on the top to move upwards synchronously. The top pin 9 gradually lifts the solidified silicone part, overcomes the elastic force of the return spring 8, and pushes the silicone part out of the forming cavity of the fixed mold block 10. After demolding, the electric push rod 5 is retracted, and the top pin 9, the top cylinder 7 and the guide top plate 6 are reset under the action of the return spring 8, preparing for the next forming cycle.

[0049] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A silicone part molding fixture, comprising a molding fixture base (3) and a fixed module (10), characterized in that: The molding fixture base (3) has an insulating cylinder (4) threaded on its inner bottom end. An electric push rod (5) is provided at the inner bottom end of the insulating cylinder (4). A guide plate (6) is fixedly connected to the top end of the output shaft of the electric push rod (5). Multiple top cylinders (7) are provided at the top end of the guide plate (6). A return spring (8) is provided inside the top cylinder (7). The end of the ejector pin (9) is inserted into the inside of the top cylinder (7), and the end of the top cylinder (7) is in contact with the top end of the return spring (8). A protective shell (12) is provided at the top end of the molding fixture base (3). A cooler (1) is provided at the four ends of the outer side of the protective shell (12). A gas diffuser (2) is provided inside the protective shell (12). The gas diffuser (2) is connected to the cooler (1) through a delivery pipe. The gas diffuser (2) is located outside the insulating cylinder (4). A fixed module (10) is threaded on the top end of the protective shell (12). The bottom end face of the fixed module (10) is in contact with the top end of the ejector pin (9).

2. The silicone part molding fixture according to claim 1, characterized in that: A protective shell (12) is fixedly installed on the top of the molding fixture base (3). A through mounting hole is opened at the bottom of the inner side of the protective shell (12). An isolation cylinder (4) is inserted inside the mounting hole. The isolation cylinder (4) is fixed to the molding fixture base (3) by bolts. An electric push rod (5) is provided at the bottom of the inner side of the isolation cylinder (4). The output shaft of the electric push rod (5) is fixedly connected to the bottom of the guide plate (6), and the guide plate (6) slides inside the isolation cylinder (4).

3. A silicone part molding fixture according to claim 2, characterized in that: The top of the guide plate (6) is provided with a plurality of top cylinders (7) arranged in a ring. A return spring (8) is provided inside the top cylinder (7). The end of the ejector pin (9) is provided with a circular guide ring. The guide ring is located inside the top cylinder (7) and fits against the top of the return spring (8).

4. A silicone part molding fixture according to claim 2, characterized in that: The protective shell (12) has four symmetrical threaded connecting posts (14) at its top. The fixed module (10) has four symmetrical connecting holes (17) at its four ends. The end of the fixed module (10) is inserted into the interior of the protective shell (12). The threaded connecting posts (14) pass through the connecting holes (17) and are fixed with nuts. The interior of the protective shell (12) has four symmetrical force-bearing posts (15) on the central axis. The top of the force-bearing posts (15) and the top of the ejector pin (9) are close to the bottom surface of the fixed module (10). The interior of the fixed module (10) has a molding cavity.

5. A silicone part molding fixture according to claim 4, characterized in that: The protective shell (12) has a positioning cylinder (13) fixedly installed at the top four corners. The positioning cylinder (13) has an internal thread, and the cylindrical surface at the end of the positioning pin (11) has an external thread. The end of the positioning pin (11) is located inside the positioning cylinder (13) and is connected by the internal and external threads.

6. A silicone part molding fixture according to claim 1, characterized in that: The four ends of the forming fixture base (3) are fixed with a placement platform (16), a cooler (1) is provided on the top of the placement platform (16), and a gas diffuser (2) is provided at the four ends inside the protective shell (12). The delivery pipe passes through the protective shell (12) and connects the cooler (1) and the gas diffuser (2).

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