A breathable steel sole forming mold based on metal 3D printing

Abstract

The present invention discloses a breathable steel sole forming mold based on metal 3D printing, comprising a fixed mold and a movable mold, wherein a concave mold is arranged on the fixed mold, and a convex mold is arranged on the movable mold, and both the convex mold and the concave mold are made of breathable steel printed by metal 3D printing. The present invention arranges a connector and an elastic support member between the movable mold and the fixed mold. When the movable mold is flipped 180 degrees and then molded with the fixed mold, the elastic support member can first make the convex mold be in a state higher than the concave mold, and then rely on the clamping device and the cooperation of the positioning platform and the positioning groove to smoothly mold the movable mold and the fixed mold, and make the outer wall of the convex mold cooperate with the concave mold to avoid the raw material running out of the gap between the two during molding to produce a cloak. At the same time, the convex mold and the concave mold are made of breathable steel printed by metal 3D printing, which can prevent the raw material temperature from being too high and burning during the molding process, and can also accelerate ventilation and heat dissipation, thereby shortening the sole molding cycle.

Description

Technical Field

[0001] The invention discloses a breathable steel sole forming mold based on metal 3D printing, belonging to the technical field of sole molds. Background Art

[0002] As people's living standards improve, people have different demands for shoe styles and brands, and the consumption of shoes is increasing. The sole is an important part of the shoe. The sole must be wear-resistant, elastic, waterproof, comfortable, and light. The current sole molding method is to put the sole raw material in the mold, and heat the mold through the molding equipment, so that the raw material is heated in the mold to cross-link, foam and fill the entire cavity. After insulation, the mold is cooled and opened to obtain the sole. Most of the existing molds used for sole molding are two-plate structures, which include a movable mold and a fixed mold. The movable mold and the fixed mold are connected in a hinged manner. Since the movable mold can only rotate around the hinge point, the motion trajectory of the punch on its surface is arc-shaped when the movable mold rotates. In order to ensure that there is no interference with the concave mold on the fixed mold when the mold is closed, a large matching gap is usually left between the punch and the concave mold when the mold is designed. However, when the sole is molded using this structure, the raw material can run out of the matching gap, so that after the sole is formed, a circle of cape will be left on the edge of the sole, which not only affects the quality of the sole, but also requires manual secondary trimming of the cape, which undoubtedly increases the labor intensity and production cost of the workers, and also prolongs the production cycle of the sole. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a breathable steel sole forming mold based on metal 3D printing.

[0004] The present invention achieves the above-mentioned purpose through the following technical scheme: a breathable steel sole forming mold based on metal 3D printing, including a fixed mold and a movable mold, the fixed mold is provided with a concave mold, the movable mold is provided with a convex mold, the convex mold and the concave mold are both made of breathable steel printed by metal 3D printing, and the surface of the convex mold has protrusions with anti-slip patterns on the bottom surface of the molded sole, the fixed mold is provided with a rotating seat, the movable mold is provided with curved frames on both sides corresponding to the rotating seat, a connecting piece is provided between the curved frame and the rotating seat, the connecting piece includes a rotating shaft and a sliding seat, the rotating seat is provided with a first slide groove, and the sliding seat slides vertically The movable mold is arranged in the first slide groove, the rotating shaft passes through the sliding seat, and the two ends of the rotating shaft are rotatably connected with the two curved frames, the fixed mold is provided with four positioning platforms, the movable mold is provided with a positioning groove matched with the positioning platform, the positioning platform is provided with an elastic support member, and a locking device is also provided between the movable mold and the fixed mold, and under the locking action of the locking device, the lower end of the punch cooperates with the inner wall of the die, and a molding cavity for molding the sole is formed between the two, and the elastic support member provides four-point elastic support for the movable mold before the movable mold and the fixed mold are clamped and locked, and makes the bottom of the punch higher than the top of the die.

[0005] Preferably, the elastic support member includes a first limit sleeve, a plug, a sliding rod and a first spring, a first mounting hole is arranged in the fixed mold, the first limit sleeve and the plug are threadedly connected to two ends of the first mounting hole, and a first hexagonal through hole is arranged at the center of the first limit sleeve, the sliding rod is slidably arranged in the first mounting hole, and a first limit portion cooperating with the first hexagonal through hole is arranged on the sliding rod, a pressing block is arranged at the lower end of the sliding rod, the two ends of the first spring respectively contact with the plug and the pressing block, and exert a force on the sliding rod to protrude the first limit sleeve, and one end of the first limit portion protruding from the first limit sleeve has a hemispherical supporting portion.

[0006] Preferably, the locking device includes a locking member, a pressure rod and a driving member, four of the locking members are provided and are symmetrically installed on both sides of the movable mold, the locking member includes a mounting seat and a rotating member, the mounting seat is fixedly connected to the movable mold by bolts, one end of the rotating member has a mounting portion with a cylindrical structure, the mounting portion is rotatably connected to the mounting seat, a card slot is provided on the rotating member, two pressure rods are provided, and anti-slip members cooperating with the card slots are provided at both ends of the pressure rod, the anti-slip member is L-shaped, and one end thereof is threadedly connected to the pressure rod, two second sliding grooves for vertical sliding of the pressure rod are provided in the fixed mold, and a reset member for driving the pressure rod to slide upward is also provided on the fixed mold, and the driving member is installed in the middle of the fixed mold, and is used to drive the two pressure rods to slide downward.

[0007] Preferably, the reset member includes a limiting bolt and a second spring, one end of the limiting bolt passes through the fixed mold and is fixedly connected to the pressure rod, and the second spring is sleeved on the outside of the limiting bolt and applies an upward force to the limiting bolt.

[0008] Preferably, the driving member includes a rotating disk, a connecting rod and a transmission rod, two fixed blocks are provided on the fixed mold, two rotating disks are provided and are located above the two pressure rods, and a through groove for avoiding the rotating disk is provided on the fixed mold, the connecting rod is fixedly connected to the two rotating disks, and both ends of the connecting rod are rotatably connected to the fixed blocks, the transmission rod is threadedly connected to the fixed block away from the connecting member, and one end of the transmission rod is provided with a hexagonal boss, and the other end is provided with a limiting hole of a non-circular structure, and one end of the transmission rod is provided with a second limiting portion cooperating with the limiting hole, and the center of the rotating disk is eccentrically arranged with the connection point of the transmission rod and the rotating disk.

[0009] Preferably, a pre-tightening member for positioning the rotation angle of the mounting portion is provided on the mounting seat, and the pre-tightening member includes a third spring and a clamping rod. The clamping rod is slidably arranged with the mounting seat, and a first annular bulge is provided in the middle part of the clamping rod. A wave point groove cooperating with the clamping rod is provided on the mounting portion, and the third spring is sleeved on the outer side of the clamping rod and applies a force to the clamping rod to resist the mounting portion.

[0010] Preferably, a plurality of pushing members are provided at the position of the movable mold corresponding to the punch, and the pushing members include a push rod, a fourth spring and a second limiting sleeve. A plurality of second mounting holes with a stepped hole structure are provided in the movable mold, a second annular bulge is provided on the push rod, the second limiting sleeve is threadedly connected to the second mounting hole, and a second hexagonal through hole is provided in the middle of the second limiting sleeve, the fourth spring is located in the second mounting hole, and the two ends of the fourth spring respectively contact the movable mold and the second annular bulge, and exert a force on the push rod to protrude the second limiting sleeve.

[0011] Preferably, flanges are provided on the outer sides of the male and female molds, and a plurality of lugs are provided on the flanges, and the lugs are fixedly connected to the fixed mold or the movable mold by bolts.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The male and female molds are made of breathable steel printed by metal 3D printing. When the mold is placed in the molding equipment to heat and mold the sole, the raw material expands due to the heat and can discharge the gas in the molding cavity, making the sole fuller after molding, and no excess waste is generated due to the presence of air holes. At the same time, the breathable steel can also speed up the ventilation and heat dissipation of the mold, so that the raw material will not be burned due to overheating, and the molding cycle of the sole can be shortened.

[0014] By arranging elastic supporting parts, connecting parts and locking devices, when the movable mold is turned 180 degrees and then closed with the fixed mold, the elastic supporting parts exert an upward supporting force on the movable mold, so that the punch does not cooperate with the die first, and after the movable mold and the fixed mold are aligned up and down, the locking device locks the movable mold and the fixed mold, so that the punch moves vertically and cooperates with the die under the cooperation of the positioning table and the positioning groove. In this way, the matching gap between the punch and the die is very small, so that the raw material will not produce a cloak during molding, thereby effectively ensuring the molding quality of the sole and avoiding subsequent secondary processing at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the mold-closing structure of a breathable steel sole forming mold based on metal 3D printing of the present invention;

[0016] Figure 2 This is a schematic diagram of the mold opening structure of a breathable steel sole forming mold based on metal 3D printing in the present invention;

[0017] Figure 3 for Figure 2 The cross-sectional view of the molding mold at AA in the middle when the mold is closed;

[0018] Figure 4 for Figure 2 Cross-sectional view of the molding mold at the middle BB when the mold is closed;

[0019] Figure 5 for Figure 2 Cross-sectional view of the molding mold at CC in the middle when the mold is closed;

[0020] Figure 6 It is a schematic diagram of the structure of the elastic support member in the present invention;

[0021] Figure 7 It is a schematic diagram of the structure of the locking member in the present invention;

[0022] Figure numerals: 1, movable mold; 2, pusher; 3, rotating seat; 4, bent frame; 5, locking member; 6, fixed mold; 7, driving member; 8, hexagonal convex column; 9, fixed block; 10, second annular convex; 11, first limiting sleeve; 12, sliding rod; 13, connecting rod; 14, concave mold; 15, positioning platform; 16, positioning groove; 17, protrusion; 18, punch; 19, push rod; 20, lug; 21, rotating member; 22, mounting seat; 23, rotating disk; 24, anti-slip member; 25, second slide groove; 26, flange; 27, reset member; 28, pressure rod; 29 , first slide groove; 30, sliding seat; 31, rotating shaft; 32, second limiting part; 33, limiting hole; 34, transmission rod; 35, molding cavity; 36, second limiting sleeve; 37, fourth spring; 38, first annular protrusion; 39, second mounting hole; 40, first mounting hole; 41, pressing block; 42, first spring; 43, plug; 44, second spring; 45, limiting bolt; 46, first hexagonal through hole; 47, supporting part; 48, first limiting part; 49, slot; 50, wave point slot; 51, mounting part; 52, third spring; 53, tightening rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figure 1-Figure 7As shown, a breathable steel sole forming mold based on metal 3D printing includes a fixed mold 6 and a movable mold 1, a concave mold 14 is provided on the fixed mold 6, and a convex mold 18 is provided on the movable mold 1. The convex mold 18 and the concave mold 14 are both made of breathable steel printed by metal 3D printing, and the surface of the convex mold 18 has a protrusion 17 with anti-slip patterns on the bottom surface of the molded sole, a rotating seat 3 is provided on the fixed mold 6, and a curved frame 4 is provided on both sides of the movable mold 1 corresponding to the rotating seat 3. A connecting piece is provided between the curved frame 4 and the rotating seat 3, and the connecting piece includes a rotating shaft 31 and a sliding seat 30. The rotating seat 3 is provided with a first slide groove 29, and the sliding seat 30 is vertically slidably arranged in the first slide groove 29. The shaft 31 passes through the sliding seat 30, and the two ends of the rotating shaft 31 are rotatably connected to the two curved frames 4. Four positioning platforms 15 are arranged on the fixed mold 6, and a positioning groove 16 cooperating with the positioning platform 15 is arranged on the movable mold 1. An elastic support member is arranged in the positioning platform 15. A locking device is also arranged between the movable mold 1 and the fixed mold 6. Under the locking action of the locking device, the lower end of the punch 18 cooperates with the inner wall of the die 14, and a molding cavity 35 for molding the sole is formed between the two. The elastic support member provides four-point elastic support for the movable mold 1 before the movable mold 1 and the fixed mold 6 are closed and locked, and makes the bottom of the punch 18 higher than the top of the die 14.

[0025] The elastic support member includes a first limiting sleeve 11, a plug 43, a sliding rod 12 and a first spring 42. A first mounting hole 40 is provided in the fixed mold 6. The first limiting sleeve 11 and the plug 43 are threadedly connected to both ends of the first mounting hole 40. A first inner hexagonal through hole 46 is provided at the center of the first limiting sleeve 11. The sliding rod 12 is slidably arranged in the first mounting hole 40. A first limiting portion 48 cooperating with the first inner hexagonal through hole 46 is provided on the sliding rod 12. A pressing block 41 is provided at the lower end of the sliding rod 12. Both ends of the first spring 42 are provided. The first limit portion 48 protrudes from the first limit sleeve 11 at one end thereof, and has a hemispherical support portion 47. When the movable mold 1 and the fixed mold 6 are in a 180° flipped state, the support portion 47 is not subjected to the force and maintains the state of protruding from the first limit sleeve 11 under the action of the first spring 42. When the movable mold 1 and the fixed mold 6 are closed, the movable mold 1 is flipped 180°, and the surface of the movable mold 1 first conflicts with the support portion 47. The four support portions 47 can The movable mold 1 is flipped to play a supporting role, so that the movable mold 1 is located above the fixed mold 6, the two do not contact, and the punch 18 does not cooperate with the die 14. Then, the locking device applies a locking force to the movable mold 1 and the fixed mold 6, and overcomes the elastic supporting force of the elastic support member. In this way, the movable mold 1 and the punch 18 move vertically under the cooperation of the positioning platform 15 and the positioning groove 16, so that the punch 18 and the die 14 have a small matching gap after the mold is closed, and the raw material will not run out from between the two, thereby effectively ensuring the molding quality of the sole, and no secondary processing is required in the future. The support portion 47 and the movable mold 1 are in point contact, so that there will be no significant wear or interference in the mold closing action between the two, and in the mold open state, the first limit portion 48 can be rotated to drive the first limit sleeve 11 to rotate, so that the height of the support portion 47 protruding from the first limit sleeve 11 can be adjusted, so that the punch 18 will not hit the die 14 when the movable mold 1 is turned over, and by rotating the plug 43, the compression length of the first spring 42 can be changed, thereby changing the size of the elastic supporting force of the support portion 47 on the movable mold 1.

[0026] The locking device includes a locking member 5, a pressure rod 28 and a driving member 7. Four locking members 5 are provided and are symmetrically installed on both sides of the movable mold 1. The locking member 5 includes a mounting seat 22 and a rotating member 21. The mounting seat 22 is fixedly connected to the movable mold 1 by bolts. One end of the rotating member 21 has a mounting portion 51 with a cylindrical structure. The mounting portion 51 is rotatably connected to the mounting seat 22. A card slot 49 is provided on the rotating member 21. Two pressure rods 28 are provided, and both ends of the pressure rod 28 are provided with anti-slipping members 24 that cooperate with the card slot 49. The anti-slipping member 24 is L-shaped, and one end thereof is threadedly connected to the pressure rod 28. Two second slide grooves 25 for the pressure rod 28 to slide vertically are provided in the fixed mold 6, and a reset member 27 for driving the pressure rod 28 to slide upward is also provided on the fixed mold 6. The driving member 7 is installed in the middle of the fixed mold 6 and is used to drive the two pressure rods 28 to slide downward. The reset member 27 includes a limiting The limiting bolt 45 and the second spring 44, one end of the limiting bolt 45 passes through the fixed mold 6 and is fixedly connected with the pressure rod 28, the second spring 44 is sleeved on the outer side of the limiting bolt 45, and applies an upward force to the limiting bolt 45, the driving member 7 can drive the pressure rod 28 to move downward, so that the pressure rod 28 can rely on the anti-slip component 24 to simultaneously generate a downward pulling force on the four rotating components 21, thereby ensuring that the movable mold 1 can move vertically, and with the cooperation of the positioning platform 15 and the positioning groove 16, the punch 18 and the die 14 can cooperate smoothly, and after the mold is opened, the driving member 7 rotates to the reset state, and the pressure rod 28 moves upward driven by the reset component 27, the movable mold 1 moves upward under the action of the elastic support component, the movement distance of the pressure rod 28 is greater than the movement distance of the movable mold 1, and then the anti-slip component 24 is rotated 180°, and the rotating component 21 is rotated to flip the movable mold 1 to open the mold.

[0027] The driving member 7 includes a rotating disk 23, a connecting rod 13 and a transmission rod 34. Two fixed blocks 9 are arranged on the fixed mold 6. Two rotating disks 23 are arranged and are located above the two pressure rods 28. A through groove for avoiding the rotating disk 23 is arranged on the fixed mold 6. The connecting rod 13 is fixedly connected to the two rotating disks 23, and both ends of the connecting rod 13 are rotatably connected to the fixed blocks 9. The transmission rod 34 is threadedly connected to the fixed block 9 away from the connecting member, and one end of the transmission rod 34 is provided with a hexagonal boss 8, and the other end is provided with a limiting hole 33 of a non-circular structure. One end of the transmission rod 34 is provided with a second limiting portion 32 that cooperates with the limiting hole 33. The center of the rotating disk 23 is eccentrically arranged with the connection point of the transmission rod 34 and the rotating disk 23. When the transmission rod 34 is rotated, the transmission rod 34 relies on the cooperation between the limiting hole 33 and the second limiting portion 32 , which can drive the connecting rod 13 and the rotating disk 23 to rotate synchronously. When the rotating disk 23 rotates, the distance from the position where the rotating disk 23 contacts the pressure rod 28 to the connection point between the connecting rod 13 and the rotating disk 23 changes. In this way, the pressure rod 28 can be driven to move downward by rotating the transmission rod 34, and the rotating member 21 can be driven to move downward by relying on the anti-slip member 24, so that the rotating member 21 overcomes the elastic supporting force of the elastic supporting member and allows the movable mold 1 to drop vertically, so that the movable mold 1 and the fixed mold 6 are smoothly closed. At this time, the punch 18 cooperates with the die 14. Since the transmission rod 34 is threadedly connected to the fixed block 9, it is only necessary to turn the transmission rod 34 knob half a circle of thread to realize the opening or closing of the movable mold 1 and the fixed mold 6. At the same time, the transmission rod 34 will not rotate on its own, so that the movable mold 1 and the fixed mold 6 can always remain locked when closing the mold.

[0028] The mounting seat 22 is provided with a pre-tightening member for positioning the rotation angle of the mounting portion 51, the pre-tightening member includes a third spring 52 and a clamping rod 53, the clamping rod 53 is slidably arranged with the mounting seat 22, and the middle part of the clamping rod 53 is provided with a first annular protrusion 38, and the mounting portion 51 is provided with a wave point groove 50 cooperating with the clamping rod 53, the third spring 52 is sleeved on the outer side of the clamping rod 53, and applies a force to the clamping rod 53 to resist the mounting portion 51. When the movable mold 1 and the fixed mold 6 are opened, the rotating part 21 is rotated 90° with the mounting portion 51 as the center, and the wave point groove 50 and the mounting portion 51 keep rotating synchronously, so that when the wave point groove 50 rotates to align with the clamping rod 53, the two cooperate and position the rotating part 21, so that the rotating part 21 remains in a horizontal state, thereby not interfering with the flipping of the movable mold 1.

[0029] The movable mold 1 is provided with a plurality of pusher members 2 at positions corresponding to the punch 18. The pusher members 2 include a push rod 19, a fourth spring 37, and a second limiting sleeve 36. The movable mold 1 is provided with a plurality of second mounting holes 39 in a stepped hole structure. The push rod 19 is provided with a second annular protrusion 10. The second limiting sleeve 36 is threadedly connected with the second mounting hole 39, and a second inner hexagonal through hole is provided in the middle of the second limiting sleeve 36. The fourth spring 37 is located in the second mounting hole 39, and the two ends of the fourth spring 37 are respectively in contact with the movable mold 1 and the second annular protrusion 10, and exerts a protruding second limiting sleeve 36 on the push rod 19. Due to the force, when the movable mold 1 and the fixed mold 6 are closed, under the action of the fourth spring 37, one end of the push rod 19 remains flush with the surface of the punch 18, and the other end protrudes out of the surface of the second limit sleeve 36, and the end has a hemispherical structure. When the movable mold 1 and the fixed mold 6 are opened, the movable mold 1 flips 180°, and the top of the movable mold 1 contacts the workbench, and the push rod 19 compresses the fourth spring 37 under the tight action of the workbench, and generates a thrust on the sole adhered to the punch 18, so that the sole is automatically separated from the punch 18 without manual operation, which can prevent workers from being scalded by the high-temperature sole.

[0030] The outer sides of the punch 18 and the die 14 are both provided with flanges 26, and a plurality of lugs 20 are provided on the flanges 26. The lugs 20 are fixedly connected to the fixed die 6 or the movable die 1 by bolts. The die 14 and the punch 18 are detachably structured with the fixed die 6 and the movable die 1. When the die 14 or the punch 18 is damaged and fails, it can be easily replaced, and the die 14 and the punch 18 of different sizes can also be replaced to produce soles of different sizes, thereby effectively reducing the production and maintenance costs of the mold.

[0031] Working principle: When the movable mold 1 and the fixed mold 6 are in the open state, Figure 2As shown, at this time, the support portion 47 keeps protruding from the surface of the first limit sleeve 11 under the action of the first spring 42, the reset member 27 drives the pressure rod 28 to move to the highest point, and the sliding seat 30 is located at the lowest point. After the raw material is placed in the concave mold 14, the movable mold 1 is turned 180° so that the movable mold 1 moves to the top of the fixed mold 6. During this process, the movable mold 1 first hits the two support portions 47 close to one side of the rotating seat 3. The support portions 47 exert an upward force on the movable mold 1, so that one side of the movable mold 1 moves upward, and relies on the rotating shaft 31 to drive the sliding seat The movable mold 1 is moved upward to the highest point synchronously, and the rotation of the movable mold 1 will not be affected until the movable mold 1 contacts the four supporting parts 47. The movable mold 1 maintains force balance and is located directly above the fixed mold 6. The convex mold 18 does not contact the concave mold 14 during this process. At this time, the four rotating parts 21 are turned over 90°, and then the four anti-slip parts 24 are rotated 180°. Then the transmission rod 34 is rotated, and the transmission rod 34 drives the connecting rod 13 and the rotating disk 23 to rotate 180°, so that the two pressure rods 28 are stressed and move downward synchronously, and the anti-slip parts 24 are used to control the four rotating parts. The movable member 21 generates a downward pulling force, and after overcoming the elastic force of the first spring 42, the movable mold 1 and the fixed mold 6 are locked together. Since the punch 18 maintains vertical movement during mold closing, the punch 18 can be smoothly matched with the inner wall of the concave mold 14, so that the raw material will not escape from the gap between the two after being heated. Then the mold is placed in the molding equipment for heating, and the raw material is foamed and formed after being heated. After a period of heat preservation, the mold is cooled and opened. By rotating the transmission rod 34 in the opposite direction, the pressure rod 28 moves upward under the drive of the reset member 27. , and the movable mold 1 is separated from the fixed mold 6 under the drive of the support part 47 and the first spring 42, and then the anti-slip part 24 is rotated 180°, and then the rotating part 21 is rotated 90°, and the rotating part 21 is kept in a horizontal state by relying on the preload part, and then the movable mold 1 is flipped 180° to realize the mold opening, and the sole relies on the clamping force between it and the protrusion 17 to remain on the movable mold 1, and is flipped 180° synchronously with the movable mold 1, and the push rod 19 first contacts with the workbench after flipping 180°, and generates a thrust on the sole, so that the sole automatically separates from the punch 18 to realize unloading.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A breathable steel sole forming mold based on metal 3D printing, comprising a fixed mold (6) and a movable mold (1), characterized in that: The fixed mold (6) is provided with a concave mold (14), and the movable mold (1) is provided with a convex mold (18), the convex mold (18) and the concave mold (14) are both made of metal 3D printed breathable steel, and the surface of the convex mold (18) has a protrusion (17) with anti-slip patterns on the bottom surface of the molded sole, the fixed mold (6) is provided with a rotating seat (3), the movable mold (1) is provided with a curved frame (4) on both sides corresponding to the rotating seat (3), a connecting piece is provided between the curved frame (4) and the rotating seat (3), the connecting piece includes a rotating shaft (31) and a sliding seat (30), and the rotating seat (3) is provided with a first sliding seat (17). The sliding seat (30) is vertically slidably arranged in the first sliding slot (29), the rotating shaft (31) passes through the sliding seat (30), and the two ends of the rotating shaft (31) are rotatably connected to the two curved frames (4), the fixed mold (6) is provided with four positioning platforms (15), the movable mold (1) is provided with a positioning groove (16) matched with the positioning platform (15), and an elastic support member is arranged in the positioning platform (15), and a locking device is also arranged between the movable mold (1) and the fixed mold (6), and under the locking action of the locking device, the lower end of the punch (18) is locked with the movable mold (1) and the fixed mold (6). The inner wall of the female mold (14) is matched with the inner wall of the female mold (14), and a molding cavity (35) for molding the sole is formed between the two. The elastic support member provides four-point elastic support for the movable mold (1) before the movable mold (1) and the fixed mold (6) are clamped and locked, and makes the bottom of the male mold (18) higher than the top of the female mold (14). The elastic support member includes a first limiting sleeve (11), a plug (43), a sliding rod (12) and a first spring (42). A first mounting hole (40) is provided in the fixed mold (6). The first limiting sleeve (11) and the plug (43) are threadedly connected to both ends of the first mounting hole (40), and the first limiting sleeve ( A first hexagonal through hole (46) is provided at the center of the sliding rod (12), the sliding rod (12) is slidably arranged in the first mounting hole (40), and a first limiting portion (48) cooperating with the first hexagonal through hole (46) is provided on the sliding rod (12), a pressing block (41) is provided at the lower end of the sliding rod (12), two ends of the first spring (42) respectively contact the plug (43) and the pressing block (41), and exert a force on the sliding rod (12) to protrude the first limiting sleeve (11), and one end of the first limiting portion (48) protruding from the first limiting sleeve (11) has a hemispherical supporting portion (47).

2. A breathable steel sole forming mold based on metal 3D printing according to claim 1, characterized in that: The mold locking device comprises a locking member (5), a pressure rod (28) and a driving member (7). Four locking members (5) are provided and are symmetrically mounted on both sides of the movable mold (1). The locking member (5) comprises a mounting seat (22) and a rotating member (21). The mounting seat (22) is fixedly connected to the movable mold (1) by bolts. One end of the rotating member (21) has a mounting portion (51) with a cylindrical structure. The mounting portion (51) is rotatably connected to the mounting seat (22). The rotating member (21) is provided with a slot (49). Two pressure rods (28) are provided, and anti-slipping parts (24) cooperating with the slots (49) are provided at both ends of the pressure rods (28), the anti-slipping parts (24) are L-shaped, and one end thereof is threadedly connected to the pressure rod (28), two second slide grooves (25) for the pressure rods (28) to slide vertically are provided in the fixed mold (6), and a reset part (27) for driving the pressure rods (28) to slide upward is also provided on the fixed mold (6), and the driving part (7) is installed in the middle of the fixed mold (6) and is used to drive the two pressure rods (28) to slide downward.

3. A breathable steel sole forming mold based on metal 3D printing according to claim 2, characterized in that: The reset member (27) comprises a limiting bolt (45) and a second spring (44); one end of the limiting bolt (45) passes through the fixed mold (6) and is fixedly connected to the pressure rod (28); the second spring (44) is sleeved on the outside of the limiting bolt (45) and applies an upward force to the limiting bolt (45).

4. The breathable steel sole forming mold based on metal 3D printing according to claim 2, characterized in that: The driving member (7) comprises a rotating disk (23), a connecting rod (13) and a transmission rod (34); two fixed blocks (9) are arranged on the fixed mold (6); two rotating disks (23) are arranged and are located above the two pressure rods (28); a through groove for avoiding the rotating disk (23) is arranged on the fixed mold (6); the connecting rod (13) is fixedly connected to the two rotating disks (23); and both ends of the connecting rod (13) are rotatably connected to the fixed blocks (9); the transmission rod (34) is threadedly connected to the fixed block (9) away from the connecting member; one end of the transmission rod (34) is provided with a hexagonal protrusion (8); and the other end is provided with a non-circular limiting hole (33); one end of the transmission rod (34) is provided with a second limiting portion (32) matched with the limiting hole (33); and the center of the rotating disk (23) is eccentrically arranged with respect to the connection point between the transmission rod (34) and the rotating disk (23).

5. The breathable steel sole forming mold based on metal 3D printing according to claim 2, characterized in that: The mounting seat (22) is provided with a pre-tightening member for positioning the rotation angle of the mounting portion (51), the pre-tightening member comprising a third spring (52) and a clamping rod (53), the clamping rod (53) being slidably arranged with the mounting seat (22), and a first annular protrusion (38) being arranged at the middle of the clamping rod (53), the mounting portion (51) being provided with a wave point groove (50) cooperating with the clamping rod (53), the third spring (52) being sleeved on the outer side of the clamping rod (53) and exerting a force on the clamping rod (53) to abut against the mounting portion (51).

6. The breathable steel sole forming mold based on metal 3D printing according to claim 1, characterized in that: A plurality of pusher members (2) are arranged at positions of the movable mold (1) corresponding to the punch (18), and the pusher members (2) include a push rod (19), a fourth spring (37) and a second limiting sleeve (36). A plurality of second mounting holes (39) having a stepped hole structure are arranged in the movable mold (1). A second annular protrusion (10) is arranged on the push rod (19). The second limiting sleeve (36) is threadedly connected to the second mounting hole (39), and a second hexagonal through hole is arranged in the middle of the second limiting sleeve (36). The fourth spring (37) is located in the second mounting hole (39), and two ends of the fourth spring (37) respectively contact the movable mold (1) and the second annular protrusion (10), and exert a force on the push rod (19) to protrude the second limiting sleeve (36).

7. The breathable steel sole forming mold based on metal 3D printing according to claim 1, characterized in that: The outer sides of the male die (18) and the female die (14) are both provided with flanges (26), and the flanges (26) are provided with a plurality of lugs (20), and the lugs (20) are fixedly connected to the fixed die (6) or the movable die (1) via bolts.

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