A processing method of shoes based on 3D printing forming

Abstract

The application discloses a processing method of shoes based on 3D printing forming, relates to the field of 3D printing processing technology of shoe materials, and comprises the following steps: injection molding a shoe sole, reserving a plurality of anchoring holes on the circumferential edge of the shoe sole, the anchoring holes are provided through from top to bottom, and the lower opening is larger than the upper opening; forming an anchoring connecting piece by using an FDM three-dimensional printer, the anchoring connecting piece comprises anchoring bodies and connecting bodies, and the anchoring bodies correspond to the anchoring holes one by one; after the printing of the anchoring bodies is completed, the shoe sole is placed on the FDM three-dimensional printer, the anchoring holes of the shoe sole are matched with the anchoring bodies one by one, then the printing of the connecting bodies is continued on the anchoring bodies, the connecting bodies are thin-wall structures, and the connecting bodies are integrated with the anchoring bodies. The vamp is connected with the shoe sole through the anchoring connecting piece, and the cracking problem of the bonding connecting part between the shoe sole and the vamp is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of 3D printing processing technology of shoe materials, in particular to a processing method of shoes based on 3D printing forming. BACKGROUND

[0002] The main structure of the shoe includes the sole and the vamp, the sole is usually an injection molding part, and the material of the vamp is more diverse, common materials of the vamp include fabric and leather, etc., the sole and the vamp are mainly bonded and sealed by glue. However, as the use time of the shoe increases, the bonding connection part between the sole and the vamp is prone to cracking due to the repeated stress factors. SUMMARY

[0003] In order to reduce the cracking problem of the bonding connection part between the sole and the vamp, the present application provides a processing method of shoes based on 3D printing forming.

[0004] The processing method of shoes based on 3D printing forming provided by the present application adopts the following technical scheme:

[0005] A processing method of shoes based on 3D printing forming, comprising the following steps: injection molding a sole, reserving a plurality of anchor holes on the circumferential edge of the sole, the anchor holes are provided through up and down, and the lower opening is larger than the upper opening; using an FDM three-dimensional printer to form an anchor combination part, the anchor combination part comprises an anchor body and a combination body, the anchor body corresponds to the anchor hole one by one; after the printing of the anchor body is completed, the sole is placed on the FDM three-dimensional printer, so that the anchor holes of the sole correspond to the anchor bodies one by one, then the combination body is continuously printed on the anchor body, the combination body is a thin-walled structure, and the combination body is integrated with each anchor body; after the printing of the anchor combination part is completed, the vamp is connected and fixed with the anchor combination part.

[0006] By adopting the above technical scheme, the anchor body of the anchor combination part is anchored and combined with the anchor hole of the sole, and the combination body is connected and fixed with the vamp, so that the vamp forms an anchoring combination effect with the sole through the anchor combination part, and the connection between the vamp and the sole is strengthened due to the integration of the anchor body and the combination body. During the use of the shoe, part of the force acts on the connection part between the combination body and the sole, and the remaining part acts on the connection part between the anchor body and the sole, so that the bonding connection part of the shoe is not prone to cracking.

[0007] Optionally, the circumferential side of the sole extends upward to be provided with a connecting edge, the connecting edge is bonded and fixed with the combination body, and the material of the anchor combination part is PU or TPU.

[0008] By adopting the technical scheme, the connecting edge of the combination body of the anchoring connecting piece and the periphery of the shoe sole is adhesively fixed, so that the combination body plays a role equivalent to that of the leather sheet connected with the shoe sole in the conventional technology, and in addition to the adhesive connection between the combination body and the shoe sole, there is also an anchoring connection, so that the adhesive interface between the combination body and the shoe sole is not prone to cracking, and the shoe can maintain good waterproof effect in a longer use cycle.

[0009] Optionally, the lower end of each anchoring body is connected with an anchoring strip, and the shoe sole is reserved with an anchoring groove matched with the anchoring strip.

[0010] By adopting the technical scheme, the anchoring strip and the anchoring groove cooperate to increase the connection strength between the anchoring connecting piece and the shoe sole.

[0011] Optionally, the FDM three-dimensional printer is provided with a positioning table for positioning the shoe sole, and a plurality of supporting protrusions are arranged on the positioning table, and the plurality of supporting protrusions are arranged one-to-one with the plurality of anchoring holes of the shoe sole, so that when the shoe sole is placed on the FDM three-dimensional printer, the supporting protrusions make the bottom surface of the anchoring body higher than the bottom surface of the shoe sole.

[0012] By adopting the technical scheme, the supporting protrusion and the anchoring hole cooperate to position the shoe sole, and in the case that the supporting protrusion extends into the anchoring hole, the anchoring body can fully abut against the hole wall of the anchoring hole.

[0013] Optionally, when the connecting body of the anchoring connecting piece and the shoe upper is bonded, another positioning table is arranged at the bonding station, the positioning table of the bonding station is an outer positioning table, and the structure of the outer positioning table is the same as that of the positioning table on the printing table; the combination of the shoe sole and the anchoring connecting piece is placed on the outer positioning table of the bonding station, a downward pressure is applied to the shoe sole, and the hole wall of the anchoring hole and the supporting protrusion apply a pre-stress to the anchoring body.

[0014] By adopting the technical scheme, the anchoring body is pre-stressed, so that the anchoring body is not prone to deformation during use of the shoe, thereby facilitating improvement of the anchoring effect of the anchoring body.

[0015] Optionally, the shoe sole is conveyed by a conveying belt mechanism and is transferred and placed on the positioning table of the FDM three-dimensional printer by a mechanical hand.

[0016] By adopting the technical scheme, the shoe sole is conveyed by a conveying belt and is transferred and positioned by a mechanical hand, which is conducive to improving the degree of automation and reducing the work intensity of workers.

[0017] Optionally, in the process of printing the anchor body, a buffer structure is printed outside the distribution range of the sole, the buffer structure is aligned with the anchor body up and down, the upper and lower ends of the buffer structure are flat structures, and the middle is a thin rod structure; in the process of placing the sole, the print head is in the state of printing the top structure of the buffer structure.

[0018] By adopting the above technical scheme, in the process of placing the sole, the printer head is in the state of printing the buffer structure, so that the sole can be directly placed on the FDM three-dimensional printer without stopping during printing, thereby ensuring the continuity of the printing state and facilitating the guarantee of the printing precision and quality.

[0019] Optionally, the FDM three-dimensional printer comprises a printing table, a print head, an X-axis drive, a Y-axis drive and a Z-axis drive, the print head is installed on the X-axis drive, the X-axis drive is used to drive the print head to move, the Z-axis drive is used to drive the X-axis drive and the print head to move, and the Y-axis drive is used to drive the printing table to move; the X-axis drive is provided with a suction cup lifter, the suction cup lifter is higher than the print head and is arranged to be staggered with the print head along the X-axis direction, and the suction cup lifter is provided with a plurality of vacuum suction cups for adsorbing the sole.

[0020] By adopting the above technical scheme, the suction cup lifter is used to transfer the sole, manual placement of the sole is not required, or a mechanical hand for transferring the sole is not required, and the structure of the equipment is simplified. The suction cup lifter is arranged on the horizontal shaft drive, so that the positioning process of the sole is realized by the movement of the FDM three-dimensional printer, and the positioning accuracy of the sole during placement is guaranteed.

[0021] Optionally, the positioning table is provided with a negative pressure adsorption air path, the negative pressure adsorption air path comprises adsorption holes, a communication air path and a negative pressure communication pipe, the adsorption holes are provided in plurality and are distributed on the upper surface of the support protrusion; the adsorption holes are communicated with each other through the communication air path, one end of the negative pressure communication pipe is communicated with the communication air path, and the other end is used to connect a vacuum generating device, and the adsorption holes can adsorb the bottom surface of the anchor body through negative pressure.

[0022] By adopting the above technical scheme, the adsorption holes of the negative pressure adsorption air path can adsorb the bottom surface of the anchor body through negative pressure, so that the position of the anchor body is kept stable. Therefore, when the sole is placed on the FDM three-dimensional printer, the anchor body is not easy to displace, and the relative position of the anchor body and the combination of subsequent printing meets the design requirements.

[0023] Optionally, the top surface of the supporting protrusion is embedded with an embedded block, the embedded block is provided with a communication hole in communication with the adsorption hole, the communication hole comprises a tapered hole section and a circular hole section, the tapered hole section is located above the circular hole section, the large end of the tapered hole section faces downward and is in communication with the circular hole section, and the hole diameter of the circular hole section is larger than that of the adsorption hole; the tapered hole section is provided with a conical frustum and a compression spring, the conical frustum is matched with the tapered hole section, one end of the compression spring abuts against the hole edge of the adsorption hole, and the other end of the compression spring abuts against the large end of the conical frustum, and the compression spring is used to force the conical frustum to abut against the inner wall of the tapered hole section; when the conical frustum abuts against the inner wall of the tapered hole section, the upper end surface of the conical frustum is flush with the upper surface of the embedded block; when the negative pressure adsorption gas path is in a negative pressure state, the conical frustum can be lowered under the elastic force of the compression spring.

[0024] By adopting the technical scheme, when the negative pressure adsorption gas path is in an un-pressurized state, the upper end surface of the conical frustum is flush with the upper surface of the embedded block, so that the top surface of the supporting protrusion remains complete, and the lower surface of the anchor formed by printing can be kept flat. When the negative pressure gas path is in a negative pressure state, the conical frustum is lowered under the negative pressure and overcomes the elastic force of the compression spring, so that the negative pressure adsorption gas path can adsorb and position the anchor.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] The anchor of the anchor combination part is combined with the anchor hole of the sole, and the combination part is connected and fixed with the upper, so that the upper and the sole form an anchor combination effect through the anchor combination part. Since the anchor is integrated with the combination part, the connection between the upper and the sole is strengthened. During use of the shoe, part of the force acts on the connection part between the combination part and the sole, and the remaining part acts on the connection part between the anchor and the sole, so that the adhesive connection part of the shoe is not prone to cracking;

[0027] During placement of the sole, the printer head is in a state of the printing buffer structure, so that the sole can be directly placed on the FDM three-dimensional printer without stopping during printing, thereby ensuring the continuity of the printing state and being beneficial to ensuring the precision and quality of printing;

[0028] The suction cup lifter is used to move the sole, and a mechanical hand for moving the sole is not needed, which is beneficial to simplifying the structure of the equipment. The suction cup lifter 46 is arranged on the horizontal shaft drive, so that the placement and positioning of the sole 1 are realized by movement of the FDM three-dimensional printer 4, which is beneficial to ensuring the position precision of the sole 1 during placement. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a flowchart of the processing method of the shoe based on 3D printing forming of embodiment 1.

[0030] Figure 2 is a schematic view of the state of the printed combination in Example 1.

[0031] Figure 3 is a schematic view of the state of the adhesion of the anchoring combination to the upper in Example 2.

[0032] Figure 4 is a schematic view of the state of the adhesion of the anchoring combination to the upper in Example 2. Figure 3 is an enlarged view of A in Figure 2.

[0033] Figure 5 is a schematic view of the state of the printed combination in Example 2.

[0034] Figure 6 is a schematic view of the FDM three-dimensional printer in Example 3.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 1, sole; 11, anchoring hole; 12, connecting edge; 2, anchoring combination; 21, anchoring body; 22, combination; 23, anchoring strip; 24, cushioning structure; 25, thin strip structure; 4, FDM three-dimensional printer; 41, printing table; 42, printing head; 43, X-axis drive; 44, Y-axis drive; 45, Z-axis drive; 46, suction cup lifter; 5, positioning table; 51, support protrusion; 52, negative pressure suction air path; 521, suction hole; 522, communication air path; 523, negative pressure communication pipe; 53, embedding block; 531, communication hole; 532, tapered hole section; 533, round hole section; 534, frustum; 535, compression spring; 6, conveying belt mechanism; 7, mechanical hand. DETAILED DESCRIPTION

[0037] The following will be described in detail in combination with the accompanying drawings. Figures 1-6 The present application is further described in detail. Example 1

[0038] The present application discloses a processing method of a shoe based on 3D printing forming. Referring to Figure 1 , Figure 2 and Figure 3 , a processing method of a shoe based on 3D printing forming includes the following steps:

[0039] Step 1, injection molding a sole 1, a plurality of anchoring holes 11 are reserved on the peripheral edge of the sole 1, the anchoring holes 11 are arranged through up and down, and the lower opening is larger than the upper opening; the peripheral side of the sole 1 is upwardly extended to be provided with a connecting edge 12;

[0040] Step 2, printing the anchoring and combining part 2 by using the FDM three-dimensional printer 4, the material of the anchoring and combining part 2 is elastic plastic material such as PU or TPU, the anchoring and combining part 2 includes anchoring bodies 21 and combining bodies 22, the anchoring bodies 21 correspond to the anchoring holes 11 one by one; after the printing of the anchoring bodies 21 is completed, the sole 1 is placed on the FDM three-dimensional printer 4, so that the anchoring holes 11 of the sole 1 are matched with the anchoring bodies 21 one by one, then the combining bodies 22 are continuously printed on the anchoring bodies 21, the combining bodies 22 are thin-walled structures and are hollow structures, and the combining bodies 22 are integrated with the anchoring bodies 21;

[0041] Step 3, after the printing of the anchoring and combining part 2 is completed, the connecting edge 12 of the sole 1 is bonded and fixed with the combining bodies 22 of the anchoring and combining part 2, glue is injected into the gap between the anchoring hole 11 and the anchoring body 21, so that the anchoring hole 11 and the anchoring body 21 are bonded, and then the upper is bonded and fixed with the anchoring and combining part 2. The upper and the combining body 22 can also be connected by sewing.

[0042] The principle of the processing method of the shoe based on 3D printing forming in the embodiment of the application is that the anchoring bodies 21 of the anchoring and combining part 2 are anchored and combined with the anchoring holes 11 of the sole 1, and the combining bodies 22 are connected and fixed with the upper, so that the upper forms an anchoring combination effect with the sole 1 through the anchoring and combining part 2, and the connection between the upper and the sole 1 is strengthened due to the fact that the anchoring bodies 21 are integrated with the combining bodies 22.

[0043] Referring to Figure 2 , the FDM three-dimensional printer 4 used in step 3 includes a printing table 41, a printing head 42, an X-axis drive 43, a Y-axis drive 44 and a Z-axis drive 45, the driving direction of the X-axis drive 43 and the direction of the Y-axis drive 44 are perpendicular to each other in the horizontal plane, the driving direction of the Z-axis drive 45 is vertical, the printing head 42 is installed on the X-axis drive 43, the X-axis drive 43 is used to drive the printing head 42 to move, the Z-axis drive 45 is used to drive the X-axis drive 43 and the printing head 42 to move, and the Y-axis drive 44 is used to drive the printing table 41 to move.

[0044] Referring to Figure 3 , the printing table 41 of the FDM three-dimensional printer 4 is provided with a positioning table 5 for positioning the sole 1, the positioning table 5 is provided with a plurality of supporting protrusions 51, the plurality of supporting protrusions 51 are provided one by one with the plurality of anchoring holes 11 of the plurality of soles 1, the FDM three-dimensional printer 4 prints the anchoring bodies 21 on the convex surfaces of the supporting protrusions 51, when the sole 1 is placed on the positioning table 5, the supporting protrusions 51 are matched with the anchoring holes 11, so that the sole 1 is subjected to the positioning action, and the supporting protrusions 51 make the bottom surfaces of the anchoring bodies 21 higher than the bottom surface of the sole 1.

[0045] Referring to Figure 3, the positioning table 5 is provided with a negative pressure adsorption gas path 52, the negative pressure adsorption gas path 52 includes adsorption holes 521, a communication gas path 522 and a negative pressure communication pipe 523, the adsorption holes 521 are provided with a plurality of and are distributed on the upper surface of the support protrusion 51, a plurality of adsorption holes 521 are communicated with each other through the communication gas path 522, the communication gas path 522 is composed of mutually perpendicular holes, one end of the negative pressure communication pipe 523 is communicated with the communication gas path 522, the other end is used for connecting a vacuum generating device, the vacuum generating device is a vacuum pump, and the adsorption holes 521 can adsorb the bottom surface of the anchor body 21 through negative pressure.

[0046] With reference to Figure 4 , the top surface of the support protrusion 51 is embedded with an embedded block 53, the embedded block 53 is provided with a communication hole 531 communicated with the adsorption hole 521, the communication hole 531 includes a tapered hole section 532 and a circular hole section 533, the tapered hole section 532 is located above the circular hole section 533, the large end of the tapered hole section 532 faces downward and is communicated with the circular hole section 533, and the hole diameter of the circular hole section 533 is larger than that of the adsorption hole 521; a conical platform 534 and a compression spring 535 are arranged in the communication hole 531 of the embedded block 53, the conical platform 534 is matched with the tapered hole section 532, one end of the compression spring 535 abuts against the hole edge of the adsorption hole 521, and the other end abuts against the large end of the conical platform 534, and the compression spring 535 is used for forcing the conical platform 534 to abut against the inner wall of the tapered hole section 532; when the conical platform 534 abuts against the inner wall of the tapered hole section 532, the upper end surface of the conical platform 534 is flush with the upper surface of the embedded block 53; when the negative pressure adsorption gas path 52 is in a negative pressure state, the conical platform 534 can move downward against the elastic force of the compression spring 535.

[0047] In another embodiment, the conical platform and the compression spring 535 in the embedded block 53 can be removed to increase the adsorption force of the adsorption hole 521. In this case, the anchor body 21 can be printed in a concave intermediate shape to avoid contact between the anchor body 21 and the edge of the adsorption hole 521.

[0048] When the negative pressure gas path is in a negative pressure state, the conical platform 534 moves downward against the elastic force of the compression spring 535 in a negative pressure state, so that the negative pressure adsorption gas path 52 can adsorb the positioning anchor body 21, and the position of the anchor body 21 remains stable. Therefore, when the shoe sole 1 is placed into the FDM three-dimensional printer 4, the anchor body 21 is not easy to displace. When the negative pressure adsorption gas path 52 is in a non-negative pressure state, the upper end surface of the conical platform 534 is flush with the upper surface of the embedded block 53, so that the top surface of the support protrusion remains complete, which is conducive to keeping the lower surface of the anchor body 21 formed by printing flat.

[0049] Step 4, when bonding the shoe upper and the connecting body of the anchoring connector, another positioning table 5 is arranged at the bonding station, the positioning table of the bonding station is an outer positioning table, the structure of the outer positioning table is the same as that of the positioning table 5 on the printing table 41; the combination of the shoe sole 1 and the anchoring connector is placed on the outer positioning table, and downward pressure is applied to the shoe sole 1, so that the hole wall of the anchoring hole 11 and the supporting protrusion 51 apply a pre-stress to the anchoring body 21.

[0050] In step 3, the shoe sole 1 is conveyed by the conveying belt mechanism 6, and is placed on the positioning table 5 by the mechanical hand 7, the conveying direction of the conveying belt mechanism 6 is consistent with the driving direction of the X-axis drive 43. Embodiment 2

[0051] Referring to Figure 5 The difference between this embodiment and embodiment 1 is that in step 3, the anchoring strip 23 is connected to the lower end of each anchoring body 21, and the anchoring strip 23 is printed integrally with the anchoring body 21 by the FDM three-dimensional printer 4; the lower surface of the shoe sole 1 is pre-provided with an anchoring groove matched with the anchoring strip 23.

[0052] In this embodiment, a buffer structure 24 is printed outside the distribution range of the shoe sole 1 in the process of printing the anchoring body 21, the buffer structure 24 is aligned with the anchoring body 21, the upper and lower ends of the buffer structure 24 are flat structures, and the middle part is a thin rod structure, the bottom of the buffer structure 24 is connected to a thin strip structure 25 at the bottom of the anchoring strip 23, and the thin strip structure 25 passes through the inner concave lines at the bottom of the shoe sole 1; in the process of placing the shoe sole 1, the printing head 42 is in a state of printing the top structure of the buffer structure 24.

[0053] The principle of this embodiment is that in the process of placing the shoe sole 1, the printer head is in a state of printing the buffer structure, so that the shoe sole 1 can be directly placed on the printing table 41 of the FDM three-dimensional printer without stopping during the printing process, thereby ensuring the continuity of the printing state and being beneficial to ensuring the precision and quality of the printing. Embodiment 3

[0054] Referring to Figure 6 The difference between this embodiment and embodiment 1 is that the mechanical hand 7 is not arranged in this embodiment, in this embodiment, the X-axis drive 43 of the FDM three-dimensional printer 4 is provided with a suction cup lifter 46, the suction cup lifter 46 is higher than the printing head 42, and is arranged to be staggered with the printing head 42 along the X-axis direction, the suction cup lifter 46 is provided with a plurality of vacuum suction cups, the vacuum suction cups are used to connect a negative pressure generating device, and the vacuum suction cups are used to adsorb the shoe sole 1.

[0055] The sole 1 is moved by the suction cup lifter 46, without manual placement of the sole 1 or without a special mechanical hand 7 for moving the sole 1, which is beneficial to simplify the structure of the equipment. The suction cup lifter 46 is arranged on the horizontal shaft drive, so that the placement and positioning process of the sole 1 is realized by movement of the FDM three-dimensional printer 4, which is beneficial to guarantee the position accuracy of the sole 1 during placement.

[0056] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A processing method of a shoe based on 3D printing molding, characterized by, It comprises the following steps: Injection molding shoe sole (1), a plurality of anchoring holes (11) are reserved on the circumferential edge of the shoe sole (1), the anchoring holes (11) are provided through up and down, and the lower opening is larger than the upper opening; Anchoring combination piece (2) is formed by FDM three-dimensional printer (4), the anchoring combination piece (2) comprises anchoring body (21) and combination body (22), the anchoring body (21) corresponds to the anchoring hole (11) one by one; after the anchoring body (21) is printed, the shoe sole (1) is placed on the FDM three-dimensional printer (4), the anchoring hole (11) of the shoe sole (1) is matched with the anchoring body (21) one by one, then the combination body (22) is continued to be printed on the anchoring body (21), the combination body (22) is a thin-walled structure, the combination body (22) is connected with each anchoring body (21) as a whole; After the anchoring combination piece (2) is printed, the upper is connected and fixed with the anchoring combination piece (2).

2. The method of claim 1, wherein the 3D printing is selected from the group consisting of Fused Deposition Modeling (FDM), Stereolithography (SLA), Selective Laser Sintering (SLS), and Digital Light Processing (DLP). The circumferential side of the shoe sole (1) is provided with a connecting edge (12) extending upward, the connecting edge (12) is adhesively fixed with the combination body (22), and the material of the anchoring combination piece (2) is PU or TPU.

3. The method of claim 1, wherein the 3D printing is selected from the group consisting of Fused Deposition Modeling (FDM), Stereolithography (SLA), Selective Laser Sintering (SLS), and Digital Light Processing (DLP). The lower end of each anchoring body (21) is connected with an anchoring strip (23), and the shoe sole (1) is provided with an anchoring groove matched with the anchoring strip (23).

4. The method of claim 1, wherein the method further comprises: The FDM three-dimensional printer (4) is provided with a positioning table (5) for positioning the shoe sole (1), a plurality of supporting protrusions (51) are arranged on the positioning table (5), a plurality of supporting protrusions (51) are arranged one by one corresponding to a plurality of anchoring holes (11) of the shoe sole (1), when the shoe sole (1) is placed on the FDM three-dimensional printer (4), the supporting protrusions (51) make the bottom surface of the anchoring body (21) higher than the bottom surface of the shoe sole (1). ​ 5. The method of claim 4, wherein the 3D printing is selected from the group consisting of FDM, SLA, SLS, and DMLS. 5 The positioning table (5) is provided with a negative pressure adsorption gas path (52), the negative pressure adsorption gas path (52) comprises adsorption holes (521), a communication gas path (522) and a negative pressure communication pipe (523), a plurality of adsorption holes (521) are arranged, and are distributed on the upper surface of the supporting protrusion (51); a plurality of adsorption holes (521) are communicated with each other through the communication gas path (522), one end of the negative pressure communication pipe (523) is communicated with the communication gas path (522), and the other end is used for connecting a vacuum generating device; the adsorption hole (521) can adsorb the bottom surface of the anchoring body (21) through negative pressure.

6. The method of processing a shoe based on 3D printing forming according to claim 5, characterized in that: The top surface of the supporting protrusion (51) is embedded with an embedded block (53), the embedded block (53) is provided with a communication hole (531) in communication with the adsorption hole (521), the communication hole (531) comprises a tapered hole section (532) and a circular hole section (533), the tapered hole section (532) is located above the circular hole section (533), the large end of the tapered hole section (532) faces downward and communicates with the circular hole section (533), and the hole diameter of the circular hole section (533) is larger than that of the adsorption hole (521); the communication hole (531) of the embedded block (53) is provided with a frustum (534) and a compression spring (535), the frustum (534) is matched with the tapered hole section (532), one end of the compression spring (535) abuts against the hole edge of the adsorption hole (521), and the other end abuts against the large end of the frustum (534), and the compression spring (535) is used for forcing the frustum (534) to abut against the inner wall of the tapered hole section (532); when the frustum (534) abuts against the inner wall of the tapered hole section (532), the upper end surface of the frustum (534) is flush with the upper surface of the embedded block (53); when the negative pressure adsorption gas path (52) is in a negative pressure state, the frustum (534) can be lowered against the elastic force of the compression spring (535).

7. The method of claim 4, wherein the 3D printing is selected from the group consisting of FDM, SLA, and DLP.

8. The method of claim 4, wherein the 3D printing is FDM. When the combination (22) of the anchoring combination (2) and the upper is bonded, another positioning table (5) is arranged at the bonding station, the positioning table (5) of the bonding station is an outer positioning table, and the structure of the outer positioning table is the same as that of the positioning table (5) on the printing table (41); the combination (22) of the anchoring combination (2) and the upper is placed on the outer positioning table of the bonding station, and downward pressure is applied to the sole (1), so that the hole wall of the anchoring hole (11) and the supporting protrusion (51) jointly apply a pre-stress to the anchoring body (21).

8. The method of claim 1, wherein the 3D printing is selected from the group consisting of FDM, SLA, and DLP.

9. The method of claim 1, wherein the 3D printing is FDM. The sole (1) is conveyed by a conveying belt mechanism (6) and is placed on the positioning table (5) of the FDM three-dimensional printer (4) by a mechanical hand (7).

9. The method of claim 1, wherein the 3D printing is selected from the group consisting of FDM, SLA, and DLP.

9. The method of claim 1, wherein the 3D printing is FDM. In the process of printing the anchoring body (21), a buffer structure (24) is printed outside the distribution range of the sole (1) at the same time, the buffer structure (24) is aligned with the anchoring body (21) up and down, the upper and lower ends of the buffer structure (24) are flat structures, and the middle part is a thin rod structure; in the process of placing the sole (1), the printing head (42) is in a state of printing the top structure of the buffer structure (24).

10. The method of claim 1, wherein the method further comprises: 3D printing a shoe based on the 3D model. FDM three-dimensional printer (4) including printing table (41), printing head (42), X axis drive (43), Y axis drive (44) and Z axis drive (45), the printing head (42) is installed to the X axis drive (43), the X axis drive (43) is used to drive the printing head (42) moves, the Z axis drive (45) is used to drive the X axis drive (43) and the printing head (42) moves, the Y axis drive (44) is used to drive the printing table (41) moves;The X axis drive (43) is provided with suction cup lifter (46), the suction cup lifter (46) is higher than the printing head (42), and is staggered with the printing head (42) along the X axis direction setting, the suction cup lifter (46) is provided with a plurality of vacuum suction cups, and the vacuum suction cup is used to adsorb the shoe sole (1).

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