A cavity soft finger mold and its processing method

Abstract

The application discloses a cavity soft finger mold which comprises a first upper mold, a first lower mold, a first mold core rod, a first mold core section, a second upper mold, a second lower mold, a second mold core rod and a second mold core section, and also provides a cavity soft finger processing method which comprises the following steps: installing the first mold core section, first process mold closing, first process mold opening, installing the second mold core section, second process mold closing, and second process mold opening. The application has the advantages that the angle can be adjusted more conveniently during the process of taking out the first mold core section, the first mold core section can be taken out from the opening on the workpiece, the problem that the mold assembly cannot be taken out from the workpiece when a complex inner cavity is processed is solved, the complex inner cavity is conveniently processed, the development difficulty of the mold is reduced, and the application is suitable for product development stage product innovation improvement optimization iteration and small-scale production verification.

Description

Technical Field

[0001] This invention relates to the technical field of soft finger molds, specifically to a cavity soft finger mold and its processing method. Background Technology

[0002] A cavity soft robotic finger is a type of robotic finger composed of material and an internally connected cavity, exhibiting outstanding performance in material grasping. Due to the complex surface shape and internal cavity shape, manufacturing a cavity soft robotic finger is an industrial challenge.

[0003] Chinese utility model patent CN216400223U discloses a modular pneumatic soft humanoid finger and its mold for segmented bending. The finger includes multiple bionic phalanges connected sequentially by magnetic attraction. Each bionic phalange includes a silicone-made closed cavity and an air tube communicating with the inside of the closed cavity. The closed cavity is a columnar cavity with an arched cross-section. The planar portion of the sidewall of the closed cavity is provided with a strain limiting layer that restricts axial elongation, and the arc-shaped portion of the sidewall of the closed cavity is provided with a fiber winding layer that restricts radial expansion, so that the closed cavity bends towards the strain limiting layer when inflated. The mold includes a first mold and a second mold. The inner cavity of the first mold is provided with a cavity rod with an arched cross-section. The inner cavity of the second mold and the inner cavity of the first mold are both arched in shape and cross-sectional shape, and the cross-sectional area of ​​the second mold is larger than that of the inner cavity of the first mold, so that the injection molded part in the first mold can be placed in the inner cavity of the second mold.

[0004] Hollow soft robotic fingers are silicone products with a particularly complex structure. To process them, complex molds need to be designed. One type of modular pneumatic soft humanoid finger, achieving segmented bending, and its mold must possess geometric features that strictly correspond to the inner cavity and outer surface of the hollow soft robotic finger, and must also fulfill the necessary mechanical structure requirements. Typically, mold design demands rigorous mechanical structural experience from designers, and manufacturing high-precision molds is costly. Therefore, this processing method is usually only used for large-scale production in the later stages of product development, and is not suitable for product innovation, improvement, optimization, iteration, and small-scale production verification during the product development phase. Furthermore, the internal structure of hollow soft robotic fingers is complex, often requiring the creation of cavities with complex structures and different extension directions within the finger. While the aforementioned molds can machine the inner cavity using cavity rods, if the cavity rods are designed to extend in different directions, they will become stuck when being removed, causing production difficulties. Therefore, existing molds suffer from limitations in small-scale production verification and the difficulty in machining complex internal cavities. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention aims to provide a cavity soft finger mold, comprising a first upper mold, a first lower mold, a first mold core rod, a first mold core section, a second upper mold, a second lower mold, a second mold core rod, and a second mold core section. The invention also provides a method for processing a cavity soft finger, comprising the following steps: installing the first mold core section, a first-step mold closing, a first-step demolding, installing the second mold core section, a second-step mold closing, and a second-step demolding. This cavity soft finger mold has the advantages of being suitable for small-scale production verification and facilitating the processing of complex internal cavities.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows:

[0007] A hollow soft finger mold includes a first upper mold and a first lower mold, with a first mold cavity between the first upper mold and the first lower mold. The mold mold further includes a first mold core rod, a first mold core section, a second upper mold, a second lower mold, a second mold core rod, and a second mold core section. The first mold core section is detachably connected to the first mold core rod and is located within the first mold cavity. A side plate is provided between the first upper mold and the first lower mold, extending into the first mold cavity. A second mold cavity is provided between the second upper mold and the second lower mold, with the second mold core section located within the second mold cavity.

[0008] This setup achieves the advantages of being suitable for small-scale production verification and facilitating the fabrication of complex internal cavities.

[0009] A method for processing a hollow soft finger utilizes a hollow soft finger mold. The mold includes a first upper mold and a first lower mold, with a first mold cavity between them. It also includes a first mold core rod, a first mold core section, a second upper mold, a second lower mold, a second mold core rod, and a second mold core section. The first mold core section is detachably connected to the first mold core rod and is located within the first mold cavity. A side plate extends into the first mold cavity between the first upper mold and the first lower mold. A second mold cavity is formed between the second upper mold and the second lower mold, with the second mold core section located within the second mold cavity.

[0010] The hollow soft finger processing method includes the following steps:

[0011] S1. Install the first mold core section: Install the first mold core section onto the first mold core rod, extend the first mold core rod into the first mold cavity and position the first mold core section inside the first mold cavity, and install the side plate onto the first lower mold and extend the side plate into the first mold cavity;

[0012] S2, First step: mold closing: add thermoplastic material into the first mold cavity and close the first upper mold and the first lower mold. Heat the thermoplastic material and melt it in the first mold cavity, then cool and solidify it to form a workpiece.

[0013] S3, First demolding process: Disassemble the first upper mold and the first lower mold, remove the first mold core section, the workpiece and the side plate from the first mold cavity, pull the first mold core rod out from the inside of the workpiece, remove the side plate from the workpiece to form an opening on the workpiece, then adjust the position and angle of the first mold core section inside the workpiece and remove the first mold core section through the opening;

[0014] S4. Install the second mold core section: Install the second mold core section onto the second mold core rod, place the workpiece on the second mold core section and make the second mold core section block the inside of the opening, extend the second mold core rod into the second mold cavity and make the second mold core section located in the second mold cavity;

[0015] S5. Second step: mold closing: add thermoplastic material into the opening and close the second upper mold and the second lower mold. The second upper mold and the second lower mold block the outside of the opening. Heat the thermoplastic material and melt it in the second mold cavity. Then cool and solidify the material and close the opening.

[0016] S6. Second demolding process: Disassemble the second upper mold and the second lower mold, and remove the workpiece from the second mold cavity.

[0017] This design allows for the separate removal of the first mold core rod and the first mold core section from within the workpiece. This facilitates angle adjustment during the removal of the first mold core section and allows for removal from the opening on the workpiece, thus overcoming the problem of mold components being unable to be removed from the workpiece when machining complex internal cavities. This achieves the advantage of easily machining complex internal cavities. When adjustments to the machining process or changes to the workpiece size are required, different sizes of workpieces can be machined by individually replacing the first mold core rod, the first mold core section, the second mold core rod, and the second mold core section. This facilitates changes in product size, reduces the difficulty of mold development, and is suitable for product innovation, improvement, optimization, iteration, and small-scale production verification during the product development stage.

[0018] Preferably, the hollow soft finger mold further includes a first snap plate, and a first slot that mates with the first snap plate is provided between the first upper mold and the first lower mold, and the first mold core rod is fixedly connected to the first snap plate;

[0019] Step S1 further includes the following steps:

[0020] The first mold core section and the first mold core rod are installed and positioned by snapping the first buckle plate into the first slot.

[0021] This configuration ensures the accuracy of the installation positions of the first mold core section and the first mold core rod, and provides support for the first mold core rod and the first mold core section after mold closing, thus guaranteeing the machining accuracy of the workpiece.

[0022] Preferably, the hollow soft finger mold further includes a second snap plate, and a second slot that mates with the second snap plate is provided between the second upper mold and the second lower mold, and the second mold core rod is fixedly connected to the second snap plate;

[0023] Step S4 also includes the following steps:

[0024] The second mold core section and the second mold core rod are installed and positioned by snapping the second buckle plate into the second slot.

[0025] This configuration ensures the accuracy of the installation positions of the second mold core section and the second mold core rod, and provides support for the second mold core rod and the second mold core section after mold closing, thus guaranteeing the machining accuracy of the workpiece.

[0026] Preferably, the side plate is fixedly connected with a positioning strip, which is engaged with the first upper mold and the first lower mold respectively;

[0027] Step S1 further includes the following steps:

[0028] Make the positioning strip engage with the first upper mold and the second upper mold, and position the positioning strip.

[0029] This setup ensures the accuracy of the side panel position, thereby guaranteeing the machining precision of the opening.

[0030] Preferably, at least two first mold core rods are provided;

[0031] Step S3 further includes the following steps:

[0032] At least two first mold core rods are extracted in sequence.

[0033] With this setup, it is possible to process workpieces with more complex internal cavity structures and to easily remove the first mold core section.

[0034] Preferably, the first mold core rod is provided with a plurality of first mold core sections;

[0035] Step S3 further includes the following steps:

[0036] Multiple first mold core sections are removed from the workpiece in sequence.

[0037] With this setup, it is possible to process workpieces with more complex internal cavity structures and to easily remove the first mold core section.

[0038] Preferably, the second mold core section is detachably connected to the second mold core rod;

[0039] Step S6 further includes the following steps:

[0040] The second mold core rod is pulled out from inside the workpiece, the position and angle of the second mold core section are adjusted inside the workpiece, and the first mold core section is removed.

[0041] This design facilitates the removal of the second mold core rod and the second mold core section, overcoming the problem that the mold components cannot be removed from the workpiece when machining complex internal cavities, thus achieving the advantage of easily machining complex internal cavities.

[0042] Preferably, at least two second mold core rods are provided;

[0043] Step S6 further includes the following steps:

[0044] At least two second mold core rods are extracted in sequence.

[0045] With this setup, it is possible to process workpieces with more complex internal cavity structures and to easily remove the second mold core section.

[0046] Preferably, a plurality of second mold core sections are provided on the second mold core rod;

[0047] Step S6 further includes the following steps:

[0048] Multiple second mold core sections are removed from the workpiece in sequence.

[0049] With this setup, it is possible to process workpieces with more complex internal cavity structures and to easily remove the second mold core section.

[0050] Compared with the prior art, the present invention has achieved beneficial technical effects:

[0051] 1. By removing the first mold core rod and the first mold core section separately from the inside of the workpiece, the angle can be adjusted more conveniently during the removal of the first mold core section, which facilitates the removal of the first mold core rod and the first mold core section. This overcomes the problem that the mold assembly cannot be removed from the workpiece when machining complex internal cavities, thus achieving the advantage of conveniently machining complex internal cavities.

[0052] 2. During the production process, the mold can process the first mold core rod and the first mold core section separately, which can facilitate the processing of more complex mold core sections, enabling the mold core sections to process workpieces with more complex internal shapes, and further facilitating the processing of workpieces with complex internal cavities.

[0053] 3. By setting the side plate, the workpieces processed by the first upper mold and the first lower mold form an opening at the side plate, and the outline of the opening corresponds to the external shape of the side plate. This allows the first mold core section to be removed through the opening, which facilitates the processing of the first mold core section and further facilitates the processing of workpieces with complex internal cavities.

[0054] 4. Since the second mold core section only needs to block the inside of the opening to achieve the closure of the opening, the second mold core section can be designed to be smaller than the size of the first mold core section, so it can be easily removed. Thus, while processing the workpiece, it can also be easily removed, which further facilitates the processing of workpieces with complex internal cavities.

[0055] 5. When it is necessary to adjust the processing technology or change the workpiece size, different sizes of workpieces can be processed by replacing the first mold core rod, the first mold core section, the second mold core rod, and the second mold core section with different sizes. This facilitates changes in product size and is especially suitable for product innovation, improvement, optimization, iteration, and small-scale production verification during the product development stage. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the structure of the first mold cavity, the first mold core section, and the side plate in an embodiment of the present invention;

[0057] Figure 2 This is a disassembly diagram of the first upper mold and the first lower mold in an embodiment of the present invention;

[0058] Figure 3 This is a schematic diagram of the structure of the second mold cavity and the second mold core section in an embodiment of the present invention;

[0059] Figure 4 This is a disassembly diagram of the second upper mold and the second lower mold in an embodiment of the present invention;

[0060] Figure 5 This is a flowchart illustrating a method for processing a hollow soft finger according to an embodiment of the present invention.

[0061] The technical features referred to by the various reference numerals in the accompanying drawings are as follows:

[0062] 11. First upper mold; 12. First lower mold; 13. First mold cavity; 14. First slot; 15. First mold core rod; 16. First fastening plate; 17. First mold core section; 21. Second upper mold; 22. Second lower mold; 23. Second mold cavity; 24. Second slot; 25. Second mold core rod; 26. Second fastening plate; 27. Second mold core section; 31. Side plate; 32. Positioning strip. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments. However, the scope of protection of this invention is not limited to the specific embodiments described below.

[0064] refer to Figures 1 to 4 A cavity soft finger mold includes a first upper mold 11, a first lower mold 12, a first mold core rod 15, a first snap plate 16, a first mold core section 17, a second upper mold 21, a second lower mold 22, a second mold core rod 25, a second mold core section 27, and a second snap plate 26.

[0065] refer to Figure 1 and Figure 2 The first mold core section 17 is detachably connected to the first mold core rod 15, with the first mold core rod 15 passing through the first mold core section 17, which is located within the first mold cavity 13. The first mold cavity 13 is provided between the first upper mold 11 and the first lower mold 12, and a side plate 31 is provided between them, extending into the first mold cavity 13. The first mold core rod 15 extends from outside the first mold cavity 13 into it. A first slot 14, which mates with a first buckle plate 16, is provided between the first upper mold 11 and the first lower mold 12, and the first mold core rod 15 is fixedly connected to the first buckle plate 16. Positioning strips 32 are fixedly connected to the side plate 31, engaging with both the first upper mold 11 and the first lower mold 12. At least two first mold core rods 15 and at least two first buckle plates 16 are provided, each corresponding to one of the at least two first mold core rods 15. The first mold core rod 15 is provided with multiple first mold core sections 17.

[0066] refer to Figure 3 and Figure 4 A second mold cavity 23 is provided between the second upper mold 21 and the second lower mold 22. A second slot 24, which mates with the second snap plate 26, is provided between the second upper mold 21 and the second lower mold 22. A second mold core rod 25 is fixedly connected to the second snap plate 26. A second mold core section 27 is located inside the second mold cavity 23, and the second mold core rod 25 extends from outside the second mold cavity 23 into the second mold cavity 23. A second slot 24, which mates with the second snap plate 26, is provided between the second upper mold 21 and the second lower mold 22. The second mold core rod 25 is fixedly connected to the second snap plate 26. The second mold core section 27 and the second mold core rod 25 are detachably connected, and the second mold core rod 25 passes through the second mold core section 27. At least two second mold core rods 25 are provided. Multiple second mold core sections 27 are provided on the second mold core rods 25.

[0067] refer to Figure 5 A method for processing a hollow soft finger includes the following steps:

[0068] S1. Install the first mold core section: Install the first mold core section 17 onto the first mold core rod 15, extend the first mold core rod 15 into the first mold cavity 13 and position the first mold core section 17 within the first mold cavity 13, install the side plate 31 onto the first lower mold 12 and extend the side plate 31 into the first mold cavity 13; install and position the first mold core section 17 and the first mold core rod 15 by snapping the first buckle plate 16 into the first slot 14; engage the positioning strip 32 with the first upper mold 11 and the second upper mold 21 and position the positioning strip 32.

[0069] S2. First step: mold closing: thermoplastic material is added into the first mold cavity 13 and the first upper mold 11 and the first lower mold 12 are closed. In this embodiment, the thermoplastic material is a solid silicone strip. The thermoplastic material is heated and melted in the first mold cavity 13. The thermoplastic material is heated to 190 degrees and vulcanized for 280 seconds. Then it is cooled and shaped to form a workpiece. The first mold core section 17 and the first mold core rod 15 are located inside the workpiece.

[0070] S3, First demolding process: Disassemble the first upper mold 11 and the first lower mold 12, remove the first mold core section 17, the workpiece and the side plate 31 from the first mold cavity 13, pull out the first mold core rod 15 from the inside of the workpiece, remove the side plate 31 from the workpiece to form an opening on the workpiece, then adjust the position and angle of the first mold core section 17 inside the workpiece and remove the first mold core section 17 through the opening; pull out at least 2 first mold core rods 15 in sequence; remove multiple first mold core sections 17 from the workpiece in sequence.

[0071] S4. Install the second mold core section: Install the second mold core section 27 onto the second mold core rod 25, place the workpiece on the second mold core section 27 and make the second mold core section 27 block the inside of the opening, extend the second mold core rod 25 into the second mold cavity 23 and make the second mold core section 27 located in the second mold cavity 23; the installation and positioning of the second mold core section 27 and the second mold core rod 25 are achieved by snapping the second buckle plate 26 into the second slot 24.

[0072] S5. Second step: mold closing: add thermoplastic material into the opening and close the second upper mold 21 and the second lower mold 22. The second upper mold 21 and the second lower mold 22 block the outside of the opening. Heat the thermoplastic material and melt it in the second mold cavity 23. Heat the thermoplastic material to 190 degrees and vulcanize for 120 seconds. Then cool and solidify and close the opening.

[0073] S6. Second demolding process: Disassemble the second upper mold 21 and the second lower mold 22, and remove the workpiece from the second mold cavity 23; pull out the second mold core rod 25 from the inside of the workpiece, adjust the position and angle of the second mold core section 27 inside the workpiece, and remove the first mold core section 17; pull out at least two second mold core rods 25 in sequence; and remove multiple second mold core sections 27 from the workpiece in sequence.

[0074] This embodiment has the following advantages:

[0075] By removing the first mold core rod 15 and the first mold core section 17 from the inside of the workpiece respectively, the angle can be adjusted more conveniently during the removal of the first mold core section 17, and the first mold core section 17 can be removed through the opening on the workpiece. This facilitates the removal of the first mold core rod 15 and the first mold core section 17, overcoming the problem that the mold assembly cannot be removed from the workpiece when machining complex internal cavities, thus achieving the advantage of conveniently machining complex internal cavities.

[0076] During the production process, the mold can be processed separately for the first mold core rod 15 and the first mold core section 17, which can facilitate the processing of more complex mold core sections, enabling the mold core sections to process workpieces with more complex internal shapes, and further facilitating the processing of workpieces with complex internal cavities.

[0077] The side plate 31 allows the workpieces processed by the first upper mold 11 and the first lower mold 12 to form an opening at the side plate 31, the outline of which corresponds to the external shape of the side plate 31. This allows the first mold core section 17 to be removed through the opening, facilitating the processing of the first mold core section 17 and further simplifying the processing of workpieces with complex internal cavities.

[0078] Since the second mold core section 27 only needs to block the inside of the opening to achieve the closure of the opening, the second mold core section 27 can be designed to be smaller than the size of the first mold core section 17, so it can be easily removed. Thus, while processing the workpiece, it can also be easily removed, which further facilitates the processing of workpieces with complex internal cavities.

[0079] When it is necessary to adjust the processing technology or change the workpiece size, workpieces of different sizes can be processed by replacing the first mold core rod 15, the first mold core section 17, the second mold core rod 25 and the second mold core section 27 of different sizes. This facilitates changes in product size and is suitable for product innovation, improvement, optimization and iteration and small-scale production verification during the product development stage.

[0080] Inserting the first snap plate 16 into the first slot 14 enables the installation and positioning of the first mold core section 17 and the first mold core rod 15, ensuring the accuracy of the installation position of the first mold core section 17 and the first mold core rod 15, and providing support force to the first mold core rod 15 and the first mold core section 17 after mold closing, thus ensuring the machining accuracy of the workpiece.

[0081] Inserting the second snap plate 26 into the second slot 24 enables the installation and positioning of the second mold core section 27 and the second mold core rod 25, ensuring the accuracy of the installation position of the second mold core section 27 and the second mold core rod 25, and providing support force to the second mold core rod 25 and the second mold core section 27 after mold closing, thus ensuring the machining accuracy of the workpiece.

[0082] The positioning strip 32 is engaged with the first upper mold 11 and the first lower mold 12, thereby positioning the side plate 31 and ensuring the accuracy of the side plate 31's position, thus ensuring the processing precision of the opening.

[0083] By setting at least two first mold core rods 15, different first mold core sections 17 can be supported by the first mold core rods 15 to block the openings at different positions, thereby enabling the processing of workpieces with more complex internal cavity structures and facilitating the removal of the first mold core sections 17.

[0084] By setting multiple first mold core sections 17 on the first mold core rod 15, different openings can be blocked by different first mold core sections 17, thereby enabling the processing of workpieces with more complex internal cavity structures and facilitating the removal of the first mold core sections 17.

[0085] By removing the second mold core rod 25 and the second mold core section 27 from the inside of the workpiece respectively, the angle can be adjusted more conveniently during the removal of the second mold core section 27, which facilitates the removal of the second mold core rod 25 and the second mold core section 27. This overcomes the problem that the mold assembly cannot be removed from the workpiece when machining complex internal cavities, thus achieving the advantage of conveniently machining complex internal cavities.

[0086] By setting at least two second mold core rods 25, different second mold core sections 27 can be supported by the second mold core rods 25 to block the openings at different positions, thereby enabling the processing of workpieces with more complex internal cavity structures and facilitating the removal of the second mold core sections 27.

[0087] By setting multiple second mold core sections 27 on the second mold core rod 25, different openings can be blocked by different second mold core sections 27, thereby enabling the processing of workpieces with more complex internal cavity structures and facilitating the removal of the second mold core sections 27.

[0088] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the invention.

Claims

1. A method for processing a soft finger of a cavity, characterized by: A cavity soft finger mold is adopted, which comprises a first upper mold (11), a first lower mold (12), a first mold cavity (13) arranged between the first upper mold (11) and the first lower mold (12), a first mold core rod (15), a first mold core section (17), a second upper mold (21), a second lower mold (22), a second mold core rod (25) and a second mold core section (27), the first mold core section (17) is detachably connected with the first mold core rod (15), and the first mold core section (17) is located in the first mold cavity (13); a side plate (31) is arranged between the first upper mold (11) and the first lower mold (12), and the side plate (31) extends into the first mold cavity (13); a second mold cavity (23) is arranged between the second upper mold (21) and the second lower mold (22), and the second mold core section (27) is located in the second mold cavity (23); The cavity soft finger processing method comprises the following steps: S1, installing the first mold core section (17): installing the first mold core section (17) on the first mold core rod (15), extending the first mold core rod (15) into the first mold cavity (13) and locating the first mold core section (17) in the first mold cavity (13), installing the side plate (31) on the first lower mold (12) and extending the side plate (31) into the first mold cavity (13); S2, first process mold closing: adding a thermoplastic material in the first mold cavity (13) and closing the first upper mold (11) and the first lower mold (12), heating the thermoplastic material and melting the thermoplastic material in the first mold cavity (13), and then cooling and setting to form a workpiece; the thermoplastic material is a solid silica gel strip; S3, first process mold opening: disassembling the first upper mold (11) and the first lower mold (12), taking out the first mold core section (17), the workpiece and the side plate (31) from the first mold cavity (13), pulling out the first mold core rod (15) from the inside of the workpiece, taking out the side plate (31) from the workpiece to form an opening on the workpiece, then adjusting the position and angle of the first mold core section (17) in the workpiece and taking out the first mold core section (17) through the opening; S4, installing the second mold core section (27): installing the second mold core section (27) on the second mold core rod (25), sleeving the workpiece on the second mold core section (27) and blocking the inside of the opening with the second mold core section (27), extending the second mold core rod (25) into the second mold cavity (23) and locating the second mold core section (27) in the second mold cavity (23); S5, second process mold closing: adding a thermoplastic material in the opening and closing the second upper mold (21) and the second lower mold (22), the second upper mold (21) and the second lower mold (22) block the outside of the opening, heating the thermoplastic material and melting the thermoplastic material in the second mold cavity (23), and then cooling and setting to close the opening; S6, second process mold opening: disassembling the second upper mold (21) and the second lower mold (22), and taking out the workpiece from the second mold cavity (23).

2. The method of claim 1, wherein: The cavity soft finger mold further comprises a first buckle plate (16), the first upper die (11) and the first lower die (12) are provided with a first clamping groove (14) matched with the first buckle plate (16), and the first mold core rod (15) is fixedly connected with the first buckle plate (16); In the step S1, the following step is further included: The installation and positioning of the first mold core segment (17) and the first mold core rod (15) are realized by clamping the first buckle plate (16) into the first clamping groove (14).

3. The method of claim 1, wherein: The cavity soft finger mold further comprises a second buckle plate (26), the second upper die (21) and the second lower die (22) are provided with a second clamping groove (24) matched with the second buckle plate (26), and the second mold core rod (25) is fixedly connected with the second buckle plate (26); In the step S4, the following step is further included: The installation and positioning of the second mold core segment (27) and the second mold core rod (25) are realized by clamping the second buckle plate (26) into the second clamping groove (24).

4. The method of claim 1, wherein: The side plate (31) is fixedly connected with a positioning strip (32), and the positioning strip (32) is clamped with the first upper die (11) and the first lower die (12) respectively; In the step S1, the following step is further included: The positioning strip (32) is clamped with the first upper die (11) and the second upper die (21), and the positioning strip (32) is positioned.

5. The method of claim 1, wherein: The first mold core rod (15) is provided with at least two first mold core segments (17); In the step S3, the following step is further included: The at least two first mold core rods (15) are sequentially extracted.

6. The method of claim 1, wherein, The first mold core rod (15) is provided with a plurality of first mold core segments (17); In the step S3, the following step is further included: The plurality of first mold core segments (17) are sequentially taken out from the workpiece.

7. The method of claim 1, wherein: The second mold core segment (27) is detachably connected with the second mold core rod (25); In the step S6, the following step is further included: The second mold core rod (25) is extracted from the workpiece, the position and angle of the second mold core segment (27) are adjusted in the workpiece, and the second mold core segment is taken out.

8. The method of claim 7, wherein: The second mold core rod (25) is provided with at least two second mold core segments (27); In the step S6, the following step is further included: The at least two second mold core rods (25) are sequentially extracted.

9. The method of claim 8, wherein: The second mold core rod (25) is provided with a plurality of second mold core segments (27); In the step S6, the following step is further included: The plurality of second mold core segments (27) are sequentially taken out from the workpiece.

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