Mini-mesh implant product injection mold

Abstract

The application discloses a micro filter screen implant product injection mold, which comprises a movable mold part, a fixed mold part, a feeding mechanism and a material collecting mechanism, a filter screen belt is arranged between the feeding mechanism and the material collecting mechanism, a material belt guide plate for guiding the movement of the filter screen belt is arranged between the movable mold part and the fixed mold part; the movable mold part is provided with a movable mold insert and a movable mold insert pin, one end of the movable mold insert pin penetrates through the movable mold insert and abuts against the filter screen belt; the fixed mold part is provided with a fixed mold insert, a mounting seat, a fixed mold insert pin and a cylinder, the fixed mold insert pin and the cylinder are arranged on the mounting seat, the fixed mold insert pin is inserted into the cylinder, the fixed mold insert pin and the movable mold insert pin can clamp the filter screen belt, and the filter screen belt is cut through the cylinder. The application discloses a continuous filter screen belt on-line feeding, accurate positioning, synchronous cutting and injection integration scheme, and realizes full automation, high precision and high efficiency production of the micro filter screen implant.

Description

Technical Field

[0001] This invention belongs to the field of plastic mold technology, specifically relating to an injection mold for a micro-filter implantation product. Background Technology

[0002] Insert molding is a type of plastic mold used to insert one or more external parts into a mold before injection molding. Based on the inserted parts, it can be broadly divided into two categories: The first category involves inserting single, independent parts, such as nuts or metal shells. These molds require manual or robotic insertion. Manual insertion is labor-intensive, costly, and inefficient, while robotic insertion increases the molding cycle and production costs. The advantage is that no post-processing is needed after molding. The second category involves inserting parts with embedded strips, such as terminals. The advantage of these molds is that they require no manual intervention, are fully automated, and have a fast cycle time. However, the unwanted strips need to be removed later, increasing the number of processes and costs.

[0003] In cutting-edge fields such as precision electronics, medical devices, and micro-sensors, the demand for miniaturized and functionally integrated plastic parts is increasing. For example... Figure 1 As shown, a typical type of part requires the precise implantation of an ultra-thin filter 31 within a very small plastic substrate 32 (e.g., with a diameter of only millimeters) to achieve functions such as filtration, shielding, or reinforcement. The injection-molded product 33 is very small, with a diameter of only 1.75 mm, and requires the implantation of a filter 31. The conventional method is to cut out the required portion of the filter 31 and then place it into the mold for injection molding. This method has the following problems: First, the size of the filter 31 is so small that it is almost impossible for manual or general robotic arms to reliably grasp, accurately position, and place the filter. Second, even if the filter 31 is pre-cut and manually placed into the mold cavity, it is very easy for it to shift, wrinkle, or float during the injection molding process due to the impact of the high-pressure melt, resulting in poor fusion between the filter 31 and the plastic substrate 32, and failure of the product 33. Finally, the traditional production method is cumbersome and has an extremely low yield rate, which seriously restricts production efficiency and cost control, becoming a bottleneck for the large-scale manufacturing of this type of part. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold for micro-filter implantation products, which solves the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a micro filter implantation product injection mold, comprising a moving mold part, a fixed mold part, a feeding mechanism and a receiving mechanism, wherein a filter belt is provided between the feeding mechanism and the receiving mechanism, and a material belt guide plate for guiding the movement of the filter belt is provided between the moving mold part and the fixed mold part; the moving mold part is provided with a moving mold insert and a moving mold pin, one end of the moving mold pin passing through the moving mold insert and abutting against the filter belt; the fixed mold part is provided with a fixed mold insert, a mounting base, a fixed mold pin and an ejector sleeve, wherein the fixed mold pin and the ejector sleeve are both disposed on the mounting base, and the fixed mold pin is inserted into the ejector sleeve, the fixed mold pin and the moving mold pin can clamp the filter belt and cut the filter belt through the ejector sleeve.

[0006] As an optional implementation of the above technical solution, the fixed mold part is provided with a material belt pressure plate, which is used to press the filter belt onto the material belt guide plate.

[0007] As an optional implementation of the above technical solution, the fixed mold part includes a first fixed mold plate, a second fixed mold plate, and a third fixed mold plate. A first parting surface is provided between the first fixed mold plate and the moving mold part, a second parting surface is provided between the second fixed mold plate and the first fixed mold plate, and a third parting surface is provided between the third fixed mold plate and the second fixed mold plate. The fixed mold insert is disposed on the first fixed mold plate, the strip pressure plate is disposed on the second fixed mold plate, and the mounting base is disposed on the third fixed mold plate.

[0008] As an optional implementation of the above technical solution, the mounting base includes a base and a top plate, with a spring provided between the base and the top plate. The ejector sleeve is mounted on the base, and the fixed mold insert is mounted on the top plate. After the mold is closed, the spring is compressed, and the ejector sleeve retracts from the end near the filter belt, leaving space for injection molding.

[0009] As an optional implementation of the above technical solution, the fixed mold insert is provided with an insertion hole, and the material strip pressure plate can pass through the insertion hole and contact the filter belt.

[0010] As an optional implementation of the above technical solution, a limiting groove is provided on the material belt guide plate, and the width of the limiting groove matches the width of the filter belt.

[0011] As an optional implementation of the above technical solution, the material strip guide plate is provided with a channel, and the fixed mold insert can pass through the channel and cooperate with the moving mold insert.

[0012] As an optional implementation of the above technical solution, the feeding mechanism includes a feeding motor, a feeding drum and a feeding wheel assembly. The output end of the feeding motor is connected to the feeding drum, the feeding wheel assembly is disposed on one side of the feeding drum, and one end of the filter belt passes through the feeding wheel assembly and is wound around the feeding drum.

[0013] As an optional implementation of the above technical solution, the feeding wheel assembly includes a feeding guide wheel and a feeding tensioning wheel, and the feeding tensioning wheel is equipped with a feeding tensioner.

[0014] As an optional implementation of the above technical solution, the receiving mechanism includes a receiving motor, a receiving drum, and a receiving wheel assembly. The output end of the receiving motor is connected to the receiving drum, the receiving wheel assembly is disposed on one side of the receiving drum, and one end of the filter belt passes through the receiving wheel assembly and is wound around the receiving drum.

[0015] As an optional implementation of the above technical solution, the take-up wheel assembly includes a take-up guide wheel and a take-up tensioning wheel, and the take-up tensioning wheel is equipped with a take-up tensioner.

[0016] The beneficial effects of this invention are as follows: 1. This invention adopts fully automated in-mold cutting and forming, which shortens the product production cycle and improves product production efficiency and yield. 2. It reduces manual assembly steps, thus lowering production costs; 3. By using precise guidance and positioning in the mold structure, the positioning accuracy of the filter screen is improved, the risk of filter screen falling off is reduced, and the quality of the product is improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the micro-filter implantation product in this invention; Figure 2 This is a schematic diagram of the structure of a micro-filter implantation product injection mold according to one embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of a micro-filter implantation product injection mold in one embodiment of the present invention; Figure 4 yes Figure 3 Cross-sectional view; Figure 5 yes Figure 4 Enlarged view of section A in the middle; Figure 6 This is a schematic diagram of the structure of the first parting surface, the second parting surface, and the third parting surface in one embodiment of the present invention; Figure 7 This is a schematic diagram of the feeding mechanism and the receiving mechanism in one embodiment of the present invention.

[0018] In the diagram: 1-Moving mold section; 2-Fixed mold section; 3-Feeding mechanism; 4-Receiving mechanism; 5-Filter belt; 6-Strip guide plate; 7-Moving mold insert; 8-Moving mold insert pin; 9-Fixed mold insert; 10-Mounting base; 11-Fixed mold insert pin; 12-Sleeve; 13-Strip pressure plate; 14-First fixed template; 15-Second fixed template; 16-Third fixed template; 17-First parting surface; 18-Second parting surface; 19-Third parting surface; 20-Base; 21-Top plate; 22-Spring; 23-Feeding motor; 24-Feeding drum; 25-Feeding guide wheel; 26-Feeding tension wheel; 27-Receiving motor; 28-Receiving drum; 29-Receiving guide wheel; 30-Receiving tension wheel; 31-Filter screen; 32-Plastic substrate; 33-Product. Detailed Implementation

[0019] like Figures 1-7 As shown, this embodiment provides a micro-filter implantation product injection mold, which combines a filter 31 with a plastic substrate 32 to obtain a product 33. The filter 31 is a circular sheet with a diameter of 1.35 mm and a thickness of 0.05 mm. The produced product 33 has a diameter of 1.75 mm and a height of 0.88 mm. This invention abandons the traditional single-piece pre-cutting and manual placement mode, and innovatively adopts a continuous filter belt 5 online feeding, precise positioning, synchronous cutting and injection molding integrated solution, realizing fully automated, high-precision and high-efficiency production of micro-filter implantation.

[0020] like Figure 2 As shown, the injection mold includes a moving mold section 1, a fixed mold section 2, a feeding mechanism 3, and a receiving mechanism 4. A filter belt 5 is provided between the feeding mechanism 3 and the receiving mechanism 4, and a material guide plate 6 is provided between the moving mold section 1 and the fixed mold section 2 to guide the movement of the filter belt 5. The core working medium of the entire injection mold is a continuous flexible filter belt 5. The feeding mechanism 3 and the receiving mechanism 4 are located on both sides of the mold structure, respectively, and are responsible for the continuous supply, tension control, and waste recycling of the filter belt 5. The material guide plate 6 is provided between the moving mold section 1 and the fixed mold section 2. A limiting groove is provided on the material guide plate 6. The width of the limiting groove matches the width of the filter belt 5 to ensure that the filter belt 5 moves smoothly and accurately along a preset path within the mold structure, preventing it from deviating or wrinkling.

[0021] like Figure 3 As shown, the moving mold part 1 is provided with a moving mold insert 7 and a moving mold pin 8. One end of the moving mold pin 8 passes through the moving mold insert 7 and abuts against the filter belt 5. The moving mold insert 7 forms part of the cavity, while the moving mold pin 8 can move relative to the moving mold insert 7. One end of the moving mold pin 8 can pass through the through hole on the moving mold insert 7 and work in conjunction with the corresponding part of the fixed mold part 2.

[0022] like Figure 4As shown, the fixed mold section 2 includes a fixed mold insert 9, a mounting base 10, a fixed mold pin 11, and a sleeve 12. Both the fixed mold pin 11 and the sleeve 12 are mounted on the mounting base 10, with the fixed mold pin 11 inserted into the sleeve 12. The fixed mold pin 11 and the moving mold pin 8 can clamp the filter belt 5 and cut it using the sleeve 12. The fixed mold section 2 also includes a strip pressure plate 13, which presses the filter belt 5 firmly onto the strip guide plate 6. The fixed mold insert 9 has an insertion hole through which the strip pressure plate 13 can pass and contact the filter belt 5.

[0023] like Figure 6 As shown, specifically, the fixed mold part 2 includes a first fixed mold plate 14, a second fixed mold plate 15, and a third fixed mold plate 16. A first parting surface 17 is provided between the first fixed mold plate 14 and the moving mold part 1, a second parting surface 18 is provided between the second fixed mold plate 15 and the first fixed mold plate 14, and a third parting surface 19 is provided between the third fixed mold plate 16 and the second fixed mold plate 15. The fixed mold insert 9 is disposed on the first fixed mold plate 14, the strip pressure plate 13 is disposed on the second fixed mold plate 15, and the mounting base 10 is disposed on the third fixed mold plate 16. A channel is provided on the strip guide plate 6, through which the fixed mold insert 9 can pass and cooperate with the moving mold insert 7.

[0024] The fixed mold section 2 adopts a layered design to perform multiple functions, including a first fixed mold plate 14, a second fixed mold plate 15, and a third fixed mold plate 16. The first fixed mold plate 14 is equipped with a fixed mold insert 9, which cooperates with the moving mold insert 7 to form the cavity contour of the final product. The second fixed mold plate 15 is equipped with a strip pressure plate 13, which can extend through the insertion hole on the first fixed mold plate 14. When needed, it stably presses the passing filter belt 5 onto the strip guide plate 6 to ensure that it remains fixed during operation.

[0025] like Figure 4 and Figure 5 As shown, a mounting base 10 is installed on the third fixed mold plate 16. The mounting base 10 includes a base 20 and a top plate 21. A spring 22 is provided between the base 20 and the top plate 21. The ejector sleeve 12 is installed on the base 20, and the fixed mold insert 11 is installed on the top plate 21. After the mold is closed, the spring 22 is compressed, and the end of the ejector sleeve 12 near the filter belt 5 retracts, leaving injection space. The ejector sleeve 12 is fixedly installed on the base 20. The ejector sleeve 12 is essentially a precision hollow sleeve with a sharp cutting edge at its front end. The fixed mold insert 11 is fixedly installed on the top plate 21 and is inserted into the hollow interior of the ejector sleeve 12. In the initial state when the third parting surface 19 of the mold is not completely closed, the spring 22 is in a natural or slightly compressed state, and the fixed mold insert 11 is hidden inside the ejector sleeve 12. After the mold is closed, the spring 22 is compressed, and the front end of the fixed mold insert 11 can protrude from the cutting edge of the ejector sleeve 12 to leave injection space.

[0026] like Figure 7 As shown, in this embodiment, the feeding mechanism 3 includes a feeding motor 23, a feeding drum 24, and a feeding wheel assembly. The output end of the feeding motor 23 is connected to the feeding drum 24, and the feeding wheel assembly is disposed on one side of the feeding drum 24. One end of the filter belt 5 passes through the feeding wheel assembly and is wound around the feeding drum 24. Preferably, the feeding wheel assembly includes a feeding guide wheel 25 and a feeding tensioning wheel 26, and the feeding tensioning wheel 26 is equipped with a feeding tensioner.

[0027] The receiving mechanism 4 can adopt the same structure as the feeding mechanism 3. Specifically, the receiving mechanism 4 includes a receiving motor 27, a receiving drum 28, and a receiving wheel assembly. The output end of the receiving motor 27 is connected to the receiving drum 28. The receiving wheel assembly is located on one side of the receiving drum 28. One end of the filter belt 5 passes through the receiving wheel assembly and is wound around the receiving drum 28. The receiving wheel assembly includes a receiving guide wheel 29 and a receiving tension wheel 30. The receiving tension wheel 30 is equipped with a receiving tensioner.

[0028] During injection molding, the feeding mechanism 3, driven by the feeding motor 23, rotates the feeding drum 24. This, in conjunction with the feeding wheel assembly comprising the feeding guide wheel 25 and the feeding tension wheel 26 controlled by the feeding tensioner, pulls the filter belt 5 from the feeding drum 24 with controlled tension, through the belt guide plate 6, and into the take-up drum 28. The take-up drum 28, driven by the take-up motor 27, pulls away the cut filter belt 5, making room for the next injection. The feeding mechanism 3 and the take-up mechanism 4 work together to ensure continuous feeding of the filter belt 5.

[0029] Once the filter belt 5 is positioned at the designated location, the mold closing process begins. The first parting surface 17 closes, and the moving mold insert 8 moves upward to support the filter belt 5. Then, the second parting surface 18 closes, and the strip pressure plate 13 moves downward to press the filter belt 5. Then, the third parting surface 19 closes, and the fixed mold insert 11 and the ejector sleeve 12 move downward together. The fixed mold insert 11 and the moving mold insert 8 can clamp the filter belt 5 and cut it through the ejector sleeve 12. Then, the fixed mold insert 11 and the moving mold insert 8 clamp the cut filter and move it downward into the injection cavity. Under the action of the spring 22, the ejector sleeve 12 moves upward and backward to leave injection space. After the mold closing is completed, injection molding is performed.

[0030] In the final stage of mold closing, the moving mold insert 8 and the fixed mold insert 11 clamp the cut filter screen, enabling precise positioning of the filter screen and applying appropriate tension to ensure its flatness and unfolding. Because the filter screen is physically fixed and its edges are precisely cut, the high-pressure melt can evenly coat the filter screen edges, significantly improving product yield and production efficiency.

[0031] In this embodiment, the injection mold transports the part to be implanted into the mold structure as a strip. Then, the mold structure closes to cut out the filter part to be implanted and fix it in the mold structure, completing the injection molding process. This achieves fully automated production of this type of micro-filter implanted product. The entire equipment integrates the conveying, positioning, cutting, implantation, and injection molding of the filter strip 5 into a continuous mold operation cycle, resulting in an extremely short production cycle per piece and significantly improved yield and production efficiency. It not only successfully solves the filter positioning and integration problem that has hindered the industry's development, but also elevates production efficiency to a new level through a fully automated process, laying a solid technical foundation for the large-scale manufacturing of miniaturized, functional precision plastic parts.

[0032] Compared with the prior art, the present invention has the following advantages: 1. This invention adopts fully automated in-mold cutting and forming, which shortens the product production cycle and improves product production efficiency and yield. 2. It reduces manual assembly steps, thus lowering production costs; 3. By using precise guidance and positioning in the mold structure, the positioning accuracy of the filter screen is improved, the risk of filter screen falling off is reduced, and the quality of the product is improved.

[0033] In the description of this invention, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. They can refer to fixed connections, detachable connections, or integral connections; they can be mechanical or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this invention. Furthermore, the specific features and structures described in the embodiments are included in at least one implementation method. Those skilled in the art can combine features from different implementation methods without contradiction. The scope of protection of this invention is not limited to the specific implementation methods described above. Based on the basic technical concept of this invention, implementation methods that can be conceived by those skilled in the art without creative effort are all within the scope of protection of this invention.

Claims

1. A micro-filter implantation product injection mold, characterized in that, The device includes a moving mold part (1), a fixed mold part (2), a feeding mechanism (3), and a receiving mechanism (4). A filter belt (5) is provided between the feeding mechanism (3) and the receiving mechanism (4). A material belt guide plate (6) for guiding the movement of the filter belt (5) is provided between the moving mold part (1) and the fixed mold part (2). The moving mold part (1) is provided with a moving mold insert (7) and a moving mold pin (8). One end of the moving mold pin (8) passes through the moving mold insert (7). It then comes into contact with the filter belt (5); the fixed mold part (2) is provided with a fixed mold insert (9), a mounting base (10), a fixed mold insert (11) and a sleeve (12). The fixed mold insert (11) and the sleeve (12) are both set on the mounting base (10), and the fixed mold insert (11) is inserted into the sleeve (12). The fixed mold insert (11) and the moving mold insert (8) can clamp the filter belt (5) and cut the filter belt (5) through the sleeve (12); The fixed mold part (2) is provided with a material belt pressure plate (13), which is used to press the filter belt (5) onto the material belt guide plate (6); The fixed mold part (2) includes a first fixed mold plate (14), a second fixed mold plate (15) and a third fixed mold plate (16). A first parting surface (17) is provided between the first fixed mold plate (14) and the moving mold part (1). A second parting surface (18) is provided between the second fixed mold plate (15) and the first fixed mold plate (14). A third parting surface (19) is provided between the third fixed mold plate (16) and the second fixed mold plate (15). The fixed mold insert (9) is provided on the first fixed mold plate (14). The strip pressure plate (13) is provided on the second fixed mold plate (15). The mounting base (10) is provided on the third fixed mold plate (16). The mounting base (10) includes a base (20) and a top plate (21). A spring (22) is provided between the base (20) and the top plate (21). The ejector sleeve (12) is mounted on the base (20), and the fixed mold insert (11) is mounted on the top plate (21). After the third third molding surface (19) is closed, the spring (22) is compressed, and the ejector sleeve (12) moves back at one end near the filter belt (5) to leave an injection space.

2. The injection mold for the micro-filter implantation product according to claim 1, characterized in that, The fixed mold insert (9) has an insertion hole, and the material strip pressure plate (13) can pass through the insertion hole and contact the filter belt (5).

3. The injection mold for the micro-filter implantation product according to claim 1, characterized in that, The guide plate (6) of the material belt is provided with a limiting groove, the width of which matches the width of the filter belt (5); the guide plate (6) of the material belt is provided with a channel, and the fixed mold insert (9) can pass through the channel and cooperate with the moving mold insert (7).

4. The injection mold for the micro-filter implantation product according to claim 1, characterized in that, The feeding mechanism (3) includes a feeding motor (23), a feeding drum (24) and a feeding wheel assembly. The output end of the feeding motor (23) is connected to the feeding drum (24). The feeding wheel assembly is located on one side of the feeding drum (24). One end of the filter belt (5) passes through the feeding wheel assembly and is wound around the feeding drum (24).

5. The injection mold for the micro-filter implantation product according to claim 4, characterized in that, The feeding wheel assembly includes a feeding guide wheel (25) and a feeding tension wheel (26), and the feeding tension wheel (26) is equipped with a feeding tensioner.

6. The injection mold for the micro-filter implantation product according to claim 1, characterized in that, The receiving mechanism (4) includes a receiving motor (27), a receiving drum (28), and a receiving wheel assembly. The output end of the receiving motor (27) is connected to the receiving drum (28). The receiving wheel assembly is located on one side of the receiving drum (28). One end of the filter belt (5) passes through the receiving wheel assembly and is wound around the receiving drum (28).

7. The injection mold for the micro-filter implantation product according to claim 6, characterized in that, The receiving wheel assembly includes a receiving guide wheel (29) and a receiving tension wheel (30), and the receiving tension wheel (30) is equipped with a receiving tensioner.

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