A dynamically adjustable injection mold

Abstract

This utility model discloses a dynamically adjustable injection mold, relating to the field of mold technology. It includes an upper mold base, a lower mold base, and multiple movable pins. The lower mold base is located directly below the upper mold base, and the multiple movable pins are used to fix the workpiece. The lower mold base has a forming groove, and the upper mold base has a machining protrusion that matches the forming groove. The machining protrusion cooperates with the forming groove to press the workpiece fixed on the movable pins into shape. Multiple sliding components are provided on both sides of the forming groove, and the multiple movable pins are respectively installed on the multiple sliding components. This solution uses the sliding components to drive the movable pins to dynamically adjust their positions. When the mold is closed, the movable pins are close to the forming groove, and when the mold is opened, they are away from the forming groove. This allows the workpiece's elongation to dynamically adapt to the mold's closing and opening states, effectively avoiding product defects caused by improper elongation. Furthermore, it eliminates the need for additional workpiece usage or complex pre-processing, significantly reducing production costs.

Description

Technical Field

[0001] This utility model relates to a dynamically adjustable injection mold, belonging to the field of mold technology. Background Technology

[0002] Existing molds typically use fixed pins to position the fabric. Once the fabric is attached to the mold, its elongation cannot be adjusted. It can only rely on the fabric's own elongation characteristics to adapt to the shape changes during the mold closing process. When there is a large drop in the product forming area during the mold closing process, the fixed pins cannot dynamically adjust the fabric's elongation according to actual needs. If the fabric elongation required during the injection molding process exceeds its own limit, it can easily lead to appearance defects such as wrinkles and punctures on the product surface.

[0003] To avoid the aforementioned defects, existing technologies typically employ methods such as increasing fabric size, creating a concave fabric, or increasing the spacing between hanging pins to reduce the tensile stress on the fabric. However, this inevitably leads to a significant increase in the production cost of prototypes, especially the substantial increase in fabric usage, which directly drives up material costs. Therefore, a new solution is needed to address this issue. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dynamically adjustable injection mold.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a dynamically adjustable injection mold, comprising an upper mold base, a lower mold base, and multiple movable pins; the lower mold base is located directly below the upper mold base, and the multiple movable pins are used to fix the workpiece; the lower mold base has a forming groove, and the upper mold base has a machining protrusion that matches the forming groove; the machining protrusion cooperates with the forming groove to press the workpiece fixed on the movable pins into shape.

[0006] Multiple sliding components are provided on both sides of the forming groove, and multiple movable pins are respectively installed on the multiple sliding components. The sliding components are used to drive the movable pins to slide in a direction close to or away from the forming groove. An elastic element is provided on the side of the sliding component close to the forming groove, and the elastic element is used to reset the sliding component.

[0007] When the upper mold base and the lower mold base are closed, the sliding component drives the movable hanging pin to slide towards the side closer to the forming groove. When the upper mold base and the lower mold base are opened, the sliding component drives the movable hanging pin to slide away from the forming groove under the drive of the elastic element.

[0008] Preferably, the lower mold base located on both sides of the forming groove is provided with multiple mounting grooves, and the multiple sliding components are respectively installed in the multiple mounting grooves.

[0009] Preferably, the sliding assembly includes a sliding block and two pressure blocks, the two pressure blocks are respectively connected and fixed to both sides of the mounting groove, a sliding groove is formed between the two pressure blocks, the sliding block is disposed in the sliding groove and slides; the movable hanging pin is connected and fixed to the top surface of the sliding block, one end of the elastic element is fixed to the sliding block, and the other end abuts against the side wall of the mounting groove near the forming groove.

[0010] Preferably, the elastic element is a spring.

[0011] Preferably, it further includes at least one fixing pin, which is disposed at the end of the lower mold base and is used to fix the workpiece.

[0012] Preferably, both the movable and fixed hanging pins have pointed tips at their upper parts, and both the movable and fixed hanging pins penetrate the workpiece through their pointed tips.

[0013] Preferably, the bottom surface of the upper mold base is provided with a plurality of receiving holes, which correspond to the positions of the movable hanging pin and the fixed hanging pin, and are used to accommodate the upper parts of the movable hanging pin and the fixed hanging pin, respectively.

[0014] Preferably, the upper mold base has a mold opening on its side wall.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0016] This utility model provides a dynamically adjustable injection mold. By using a sliding component to drive a movable pin to dynamically adjust its position, the movable pin is brought closer to the forming groove when the mold is closed and moved away from the forming groove when the mold is open. This allows the workpiece's elongation to be dynamically adapted according to the mold's closing and opening states, effectively avoiding product defects caused by improper elongation. At the same time, it eliminates the need for additional workpiece usage or complex pretreatment, significantly reducing production costs. Attached Figure Description

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0018] Appendix Figure 1 This is a schematic diagram of the structure of a dynamically adjustable injection mold according to the present invention;

[0019] Appendix Figure 2 This is a schematic diagram of the structure of the lower mold base described in this utility model;

[0020] Appendix Figure 3 For the appendix Figure 2 Enlarged view of point A in the middle;

[0021] Appendix Figure 4 This is a schematic diagram of the upper mold base described in this utility model.

[0022] In the diagram: 1. Upper mold base; 11. Machining protrusion; 12. Receiving hole; 13. Mold opening; 2. Lower mold base; 21. Sliding component; 211. Sliding block; 212. Pressure block; 22. Mounting groove; 23. Forming groove; 3. Movable hanging pin; 31. Tip; 4. Workpiece; 5. Elastic component; 6. Fixed hanging pin. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] As attached Figure 1-4 As shown, the present invention discloses a dynamically adjustable injection mold, comprising an upper mold base 1, a lower mold base 2, and multiple movable pins 3. The lower mold base 2 is located directly below the upper mold base 1, and the multiple movable pins 3 are used to fix the workpiece 4, wherein the workpiece 4 described in this application is fabric. The lower mold base 2 has a forming groove 22, and the upper mold base 1 has a processing protrusion 11 that matches the forming groove 22. The processing protrusion 11 cooperates with the forming groove 22 to press the workpiece 4 fixed on the movable pins 3 into shape.

[0025] As attached Figure 2-3 As shown, multiple sliding components 21 are provided on both sides of the forming groove 22. Specifically, multiple mounting grooves 23 are provided on the lower mold base 2 located on both sides of the forming groove 22. The multiple sliding components 21 are respectively installed in the multiple mounting grooves 23 to ensure smooth sliding. Multiple movable pins 3 are respectively installed on the multiple sliding components 21. The sliding components 21 are used to drive the movable pins 3 to slide in the direction close to or away from the forming groove 22. Specifically, the sliding component 21 includes a sliding block 211 and two pressure blocks 212. The two pressure blocks 212 are respectively connected and fixed on both sides of the mounting groove 23. A sliding groove is formed between the two pressure blocks 212. The sliding block 211 is set in the sliding groove and slides. The movable pins 3 are connected and fixed on the top surface of the sliding block 211.

[0026] An elastic element 5 is provided on the side of the sliding component 21 near the molding groove 22. In this embodiment, the elastic element 5 is a spring and is used to reset the sliding component 21. Specifically, one end of the elastic element 5 is fixed on the sliding block 211, and the other end abuts against the side wall of the mounting groove 23 near the molding groove 22.

[0027] When the upper mold base 1 and the lower mold base 2 are closed, the sliding component 21 drives the movable hanging pin 3 to slide towards the side closer to the forming groove 22. When the upper mold base 1 and the lower mold base 2 are opened, the sliding component 21 drives the movable hanging pin 3 to slide away from the forming groove 22 under the drive of the elastic element 5.

[0028] During operation, the upper mold base 1 moves downward, and the machining protrusion 11 on the upper mold base 1 presses the workpiece 4 fixed on the movable hanging pin 3 and moves downward to the mold base 2. The workpiece 4 is tensioned by the pressure of the machining protrusion 11 and transmits the pressure to the movable hanging pin 3. The movable hanging pin 3 drives the sliding block 211 to move towards the forming groove 22. At this time, the elastic element 5 is compressed. After the workpiece 4 is pressed, the upper mold base 1 moves upward, and the sliding block 211 moves away from the forming groove 22 under the action of the elastic element 5. The movable hanging pin 3 is reset at the same time, realizing the dynamic adjustment of the mold.

[0029] The sliding component 21 drives the movable pin 3 to dynamically adjust its position. When the mold is closed, the movable pin 3 is close to the forming groove 22, and when the mold is opened, it is far away from the forming groove 22. This allows the extension amount of the workpiece 4 to be dynamically adapted according to the mold closing and opening states, effectively avoiding product defects caused by improper extension amount. At the same time, there is no need to increase the amount of workpiece 4 or perform complex pre-treatment, which significantly reduces production costs.

[0030] As attached Figure 1 , 3 As shown in Figure 4, this application further includes at least one fixing pin 6, which is disposed at the end of the lower mold base 2, and the fixing pin 6 is also used to fix the workpiece 4.

[0031] Furthermore, both the movable pin 3 and the fixed pin 6 have a tip 31 at their upper parts. Both the movable pin 3 and the fixed pin 6 penetrate the workpiece 4 through their tips 31 to fix the workpiece 4.

[0032] Furthermore, the bottom surface of the upper mold base 1 is provided with a plurality of receiving holes 12, which correspond to the positions of the movable hanging pin 3 and the fixed hanging pin 6 respectively. The plurality of receiving holes 12 are used to accommodate the upper parts of the movable hanging pin 3 and the fixed hanging pin 6 respectively. When the upper mold base 1 and the lower mold base 2 are closed, the movable hanging pin 3 and the fixed hanging pin 6 extend into their respective receiving holes 12 to ensure that the processing protrusion 11 is completely embedded in the forming groove 22.

[0033] Furthermore, an opening is provided on the side wall of the upper mold base to facilitate the mold opening operation.

[0034] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model; all technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of protection of this utility model.

Claims

1. A dynamically adjustable injection mold, characterized in that: It includes an upper mold base (1), a lower mold base (2), and multiple movable pins (3); the lower mold base (2) is located directly below the upper mold base (1), and the multiple movable pins (3) are used to fix the workpiece (4); the lower mold base (2) has a forming groove (22), and the upper mold base (1) has a machining protrusion (11) that matches the forming groove (22). The machining protrusion (11) cooperates with the forming groove (22) to press the workpiece (4) fixed on the movable pins (3) into shape. Multiple sliding components (21) are provided on both sides of the forming groove (22), and multiple movable pins (3) are respectively installed on the multiple sliding components (21). The sliding components (21) are used to drive the movable pins (3) to slide in a direction close to or away from the forming groove (22). An elastic element (5) is provided on the side of the sliding component (21) close to the forming groove (22). The elastic element (5) is used to reset the sliding component (21). When the upper mold base (1) and the lower mold base (2) are closed, the sliding component (21) drives the movable hanging pin (3) to slide towards the side closer to the forming groove (22). When the upper mold base (1) and the lower mold base (2) are opened, the sliding component (21) drives the movable hanging pin (3) to slide away from the forming groove (22) under the drive of the elastic element (5).

2. The dynamically adjustable injection mold according to claim 1, characterized in that: Multiple mounting slots (23) are provided on the lower mold base (2) located on both sides of the forming groove (22), and multiple sliding components (21) are respectively installed in the multiple mounting slots (23).

3. The dynamically adjustable injection mold according to claim 2, characterized in that: The sliding assembly (21) includes a sliding block (211) and two pressure blocks (212). The two pressure blocks (212) are respectively connected and fixed to both sides of the mounting groove (23). A sliding groove is formed between the two pressure blocks (212). The sliding block (211) is set in the sliding groove and slides. The movable hanging pin (3) is connected and fixed to the top surface of the sliding block (211). One end of the elastic element (5) is fixed to the sliding block (211), and the other end abuts against the side wall of the mounting groove (23) near the forming groove (22).

4. A dynamically adjustable injection mold according to claim 1 or 3, characterized in that: The elastic element (5) is a spring.

5. The dynamically adjustable injection mold according to claim 1, characterized in that: It also includes at least one fixing pin (6), at least one of the fixing pins (6) being disposed at the end of the lower mold base (2), the fixing pin (6) being used to fix the workpiece (4).

6. The dynamically adjustable injection mold according to claim 5, characterized in that: Both the movable pin (3) and the fixed pin (6) have a pointed tip (31) at their upper parts, and both the movable pin (3) and the fixed pin (6) penetrate the workpiece (4) through their pointed tips (31).

7. The dynamically adjustable injection mold according to claim 5, characterized in that: The bottom surface of the upper mold base (1) is provided with multiple receiving holes (12), which correspond to the positions of the movable hanging pin (3) and the fixed hanging pin (6) respectively. The multiple receiving holes (12) are used to accommodate the upper parts of the movable hanging pin (3) and the fixed hanging pin (6) respectively.

8. The dynamically adjustable injection mold according to claim 1, characterized in that: The upper mold base (1) has a mold opening (13) on its side wall.

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