Molding die and process for sole with bent supporting piece

Abstract

The invention relates to the technical field of shoes, and provides a forming mold and process for a shoe sole with a bent supporting piece, the forming mold for the shoe sole with the bent supporting piece comprises an upper mold and a lower mold, and the upper mold is installed at the top of the lower mold in a sliding mode; the lower die comprises two translation seats, shaping columns are arranged on the opposite inner walls of the two translation seats, and the supporting piece is provided with a deformation cavity allowing the shaping columns to be embedded; a first forming groove is formed in the bottom wall of the upper die, second forming grooves are formed in the side walls, close to each other, of the two translation seats, and the first forming groove and the two second forming grooves are combined to form the die cavity; a first injection molding hole communicated with the mold cavity is formed in the upper mold and is connected with a first injection molding head; a positioning column is arranged in the first forming groove, an adsorption cavity is formed in the positioning column, an adsorption hole communicating with the adsorption cavity is formed in the lower end of the positioning column, and the supporting piece is provided with a butt-joint piece allowing the positioning column to abut against. The forming mold for the shoe sole with the bent supporting piece can improve the structural strength of the shoe sole.

Description

Technical Field

[0001] The present application relates to the technical field of shoes, and in particular to a molding mold and process for a sole with a curved support member. Background Art

[0002] The sole is a vital component of a shoe, coming into direct contact with the ground and providing support and protection. The design of the sole is crucial to a shoe's performance and comfort, with designers considering factors such as its elasticity, thickness, texture, and whether it matches the upper.

[0003] In the prior art, a shoe sole consists of an upper and lower sole, with a support plate embedded between them. The support plate is typically made of TPU or carbon fiber. To manufacture this type of sole, the upper and lower soles are first injection molded, and then the support plate is placed between them. The three are then joined together by bonding or hot pressing, thus embedding the support plate within the sole to enhance the sole's support strength and elasticity.

[0004] However, the manufacturing method of this type of sole has a poor connection between the upper and lower soles. During strenuous exercise, the bonding surface of the upper and lower soles may become debonded, thereby reducing the service life of the soles. Therefore, further improvement is needed. Summary of the Invention

[0005] In order to improve the structural strength of the sole, the present application provides a molding die and process for a sole with a curved support member.

[0006] In the first aspect, the forming mold of the sole with curved support member provided by the present application adopts the following technical solution: A forming mold for a sole with a curved support member includes an upper mold and a lower mold, and the upper mold is slidably installed on the top of the lower mold; the lower mold includes two translation seats, and the opposite inner walls of the two translation seats are provided with shaping columns, and the support member has a deformation cavity for the shaping columns to be embedded; the bottom wall of the upper mold is provided with a first molding groove, and the side walls of the two translation seats close to each other are provided with a second molding groove, and the first molding groove and the two second molding grooves are combined to form a mold cavity; the upper mold is provided with a first injection hole connected to the mold cavity, and the first injection hole is connected to the first injection head; a positioning column is provided in the first molding groove, and an adsorption cavity is provided in the positioning column, and an adsorption hole connected to the adsorption cavity is provided at the lower end of the positioning column, and the support member has a docking piece for the positioning column to abut.

[0007] By adopting the above-mentioned technical solution, when performing injection molding of the sole, the prefabricated support member is placed between the two translation seats, and the two translation seats are driven close to each other so that the shaping column is embedded in the deformation cavity of the support member; the molding material is injected into the mold cavity, and after the molding material solidifies, the sole with the support member is obtained. The sole is molded in one piece so that the sole is wrapped around the support member, avoiding the use of bonding and improving the structural strength of the sole. When installing the support member, the docking piece of the support strip is aligned with the lower end face of the positioning column so that the positioning column can adsorb and position the support member through the docking piece; the two translation seats are driven close to each other, forcing the shaping column of the translation seat to be embedded in the deformation cavity of the support member, and then the molding material can be injected, thereby improving the installation accuracy of the support member.

[0008] Optionally, the positioning column is slidably connected to the upper mold, and the upper mold is provided with a lifting assembly for driving the positioning column to rise and fall; when the positioning column is separated from the sole, a positioning hole is formed on the surface of the sole; the positioning column is provided with a second injection hole, and a second injection head is provided in the second injection hole.

[0009] By adopting the above technical solution, after the injection molding of the sole is completed, the lifting assembly drives the positioning column to lift up, so that the positioning column is separated from the sole. After the positioning column is separated from the positioning hole of the sole, secondary injection molding is performed through the second injection molding head to fill the positioning hole.

[0010] Optionally, the positioning column has an isolation ring, and the adsorption hole is arranged on the isolation ring; the lifting assembly includes a lifting ring, a lifting rod and a lifting part, the lifting ring is slidably installed on the positioning column and is located at the bottom of the isolation ring, and a connecting hole is opened on the surface of the lifting ring, and the connecting hole and the adsorption hole are staggered; one end of the lifting rod is connected to the lifting ring, and the other end passes through the isolation ring and extends to the top of the upper mold, and the lifting part is arranged on the upper mold to drive the lifting rod to lift and lower.

[0011] By adopting the above technical solution, after the injection molding of the sole is completed, the lifting rod is driven to rise by the lifting member, driving the lifting ring to abut against the isolation ring, and the connecting hole and the adsorption hole are staggered, thereby closing the adsorption cavity (that is, cutting off the adsorption effect of the positioning column on the docking piece); continuing to drive the lifting rod to rise, the lifting ring can pull the positioning column to rise, thereby forcing the positioning column to separate from the positioning hole of the sole, thereby improving the operational convenience of the overall structure.

[0012] Optionally, an exhaust duct is opened on the outer peripheral wall of the positioning column, and a sealing strip is slidably installed in the exhaust duct; a first connecting rod is connected between the sealing strip and the lifting rod, one end of the first connecting rod is hinged to the sealing strip, and the other end is hinged to the lifting rod. When the lifting ring abuts the isolation ring, the first connecting rod forces the sealing strip to slide toward the center of the positioning column to open the exhaust duct.

[0013] By adopting the above-mentioned technical solution, the lifting rod is forced to rise, driving the lifting ring to abut against the isolation ring. During this process, the lifting rod pulls the blocking strip through the first connecting rod, forcing the blocking strip to slide toward the center of the positioning column to separate from the inner wall of the positioning hole, thereby opening the exhaust duct; by continuing to drive the lifting rod to rise, the positioning column can be lifted away from the positioning hole. The blocking strip slides toward the center of the positioning column. On the one hand, it can reduce the contact area between the positioning column and the inner wall of the positioning hole during the lifting process of the positioning column, thereby reducing the friction resistance encountered by the positioning column during the lifting process; on the other hand, it can connect the space in the positioning hole with the outside world, thereby facilitating the second injection molding head to fill the positioning hole with molding material, reducing the generation of bubbles in the positioning hole and improving the injection molding effect.

[0014] Optionally, the sealing strip is connected to a second connecting rod, the end of the second connecting rod away from the sealing strip penetrates into the adsorption chamber and is hinged to the first connecting rod; when the lifting ring moves down to be flush with the lower end surface of the positioning column, the length direction of the first connecting rod rotates to be consistent with the length direction of the second connecting rod.

[0015] By employing this technical solution, the lifting rod is driven downward, causing the lifting ring to move down until it is flush with the lower end surface of the positioning post. This creates a gap between the lifting ring and the isolation ring, thereby opening the suction chamber and enabling the positioning post to absorb the support member. In this state, the first and second connecting rods rotate longitudinally until they are aligned, creating a "bracing" effect and limiting each other, thereby maintaining the suction chamber open and the exhaust duct closed, facilitating the injection of molding material into the mold cavity.

[0016] Optionally, a mounting platform is provided at the bottom of the lower mold, and both translation seats are slidably installed on the mounting platform; a transfer seat for transferring the support member or the sole is slidably installed on the mounting platform, and the top wall of the transfer seat is provided with a positioning groove for the support member to match and embed.

[0017] By adopting the above-mentioned technical solution, when installing the support member, the support member is first placed in the positioning groove of the transfer seat, which serves to determine the installation orientation of the support member. The transfer seat is then driven to slide between the two translation seats, and the upper mold is lowered, allowing the positioning posts of the upper mold to absorb the support member. After the support member is transferred to the positioning posts of the upper mold, the two translation seats are driven closer together, achieving precise installation of the support member in the mold cavity, improving the installation accuracy of the support member and, in turn, the molding quality of the sole.

[0018] Optionally, a limit plate is provided on the side of the two translation seats away from each other, an ejection groove is provided on the inner wall of the second forming groove of the translation seat, an ejection rod is provided in the ejection groove, one end of the ejection rod extends out of the translation seat and is connected to the limit plate.

[0019] By adopting the above technical solution, the two translation seats are driven away from each other through the setting of the ejector rod, and the ejector rod is in a static state, thereby ejecting the formed sole outward and realizing demoulding between the sole and the translation seat.

[0020] Optionally, the limit plate is slidably installed on the mounting table, and a limit block is slidably installed on the mounting table to limit the position of the limit plate. The limit block is connected to an unlocking bar. When the translation seat slides to abut against the limit plate, the unlocking bar forces the limit block to separate from the limit plate.

[0021] By adopting the above technical solution, under normal conditions, the limit plate is fixed by the limit block. This allows the ejector rod to eject the formed sole from the second molding groove of the translation seat when the two translation seats move away from each other for demolding. After the sole is ejected from the second molding groove, the two translation seats are further driven away from each other. The translation seat forces the limit block to disengage from the limit plate via the unlocking bar. At this time, the limit plate slides under the force of the translation seat, thereby driving the ejector rod to slide, freeing the ejector rod from the sole and improving the demolding effect.

[0022] Optionally, the ejector rod is rotatably connected to the limiting plate, and a linkage assembly is provided between the ejector rod and the mounting platform. When the two translation seats move away from each other, the linkage assembly forces the ejector rod to rotate around its own central axis.

[0023] By adopting the above-mentioned technical solution, the two translation seats are driven away from each other, and the ejector rod can eject the formed sole from the second molding groove of the translation seat. During this process, the linkage assembly forces the ejector rod to rotate around its own central axis, and the ejector rod and the sole rotate relative to each other, thereby forcing the surface of the ejector rod to separate from the sole, so that the transfer seat can push the formed sole outward, thereby improving the demoulding efficiency.

[0024] In a second aspect, the forming process of the sole with curved support members provided by the present application adopts the following technical solutions: The molding process of the sole with a curved support part specifically includes the following steps: S1, manufacturing the support part; S2, installing the support part: placing the support part in the mold cavity of the molding mold; S3, injection molding: injecting molding material into the mold cavity so that the molding material wraps around the support part; S4, demoulding.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. During the injection molding of the sole, the prefabricated support member is placed between two translation seats. The two translation seats are driven toward each other so that the shaping column is embedded in the deformation cavity of the support member. The molding material is injected into the mold cavity. After the molding material solidifies, the sole with the support member is produced. The sole is injection molded in one piece, so that the sole is wrapped around the support member, avoiding the use of bonding and improving the structural strength of the sole. 2. Through the setting of the exhaust duct and the blocking strip, the lifting rod is forced to lift, driving the lifting ring to abut the isolation ring. During this process, the lifting rod pulls the blocking strip through the first connecting rod, forcing the blocking strip to slide toward the center of the positioning column to break away from the inner wall of the positioning hole, thereby opening the exhaust duct; continuing to drive the lifting rod to lift, the positioning column can be lifted away from the positioning hole. The blocking strip slides toward the center of the positioning column. On the one hand, it can reduce the contact area between the positioning column and the inner wall of the positioning hole during the lifting process of the positioning column, thereby reducing the friction resistance encountered during the lifting process of the positioning column; on the other hand, it can connect the space in the positioning hole with the outside world, thereby facilitating the second injection molding head to fill the molding material into the positioning hole, reducing the generation of bubbles in the positioning hole and improving the injection molding effect; 3. By configuring the limit block and unlocking strip, the limit plate is normally fixed within the limit block. This allows the ejector rod to eject the formed sole from the second molding groove of the translation seat when the two translation seats move away from each other for demolding. After the sole is ejected from the second molding groove, the two translation seats continue to move away from each other. The translation seat forces the limit block to disengage from the limit plate via the unlocking strip. At this point, the limit plate slides under the force of the translation seat, driving the ejector rod to slide, freeing it from the sole and improving the demolding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1; Figure 2 is a partial cross-sectional view of the first forming groove and the second forming groove in embodiment 1; Figure 3 It is a partial cross-sectional view of the shaped column in Example 1; Figure 4 This is a schematic structural diagram of a support member according to Example 1; Figure 5 is a partial cross-sectional view of the transfer seat embodied in Example 2; Figure 6 is a partial cross-sectional view of the adsorption cavity and the second injection hole of Example 2; Figure 7 Yes Figure 6 Enlarged view of point A in the middle; Figure 8 is a partial cross-sectional view of the ejector rod according to embodiment 2; Figure 9 Yes Figure 8 Enlarged view of point B in the middle; Figure 10 is a partial cross-sectional view of the linkage wheel according to embodiment 3; Figure 11 It is a schematic flow chart of Example 4.

[0027] Explanation of reference numerals: 1. support member; 11. deformation cavity; 12. docking piece; 13. deformation portion; 14. hollow mesh; 2. upper mold; 21. first molding groove; 211. sliding groove; 22. first injection head; 23. bracket; 3. lower mold; 31. translation seat; 311. connecting block; 32. shaping column; 33. second molding groove; 34. ejector rod; 4. positioning column; 41. adsorption cavity; 411. adsorption hole; 42. second injection hole; 421. second injection head; 422. second injection tube; 43. isolation ring; 431. adsorption area; 44. exhaust duct; 441. sink; 45. sealing strip; 451. groove; 46. first connecting rod; 47. second connecting rod; 48. Air duct; 5. Lifting assembly; 51. Lifting ring; 511. Connecting hole; 52. Lifting rod; 53. Lifting cylinder; 531. Connecting ring; 6. Mounting platform; 61. Transfer seat; 611. Positioning groove; 612. Pushing cylinder; 613. Pushing surface; 62. Limiting plate; 63. Limiting block; 631. Second spring; 64. Unlocking bar; 641. Guide surface; 65. First slide rail; 66. Mounting frame; 661. Driving cylinder; 67. Second slide rail; 68. Limiting slide; 681. First spring; 682. Limiting groove; 69. Mounting plate; 691. Linkage wheel; 7. First driving member; 71. Driving screw; 72. Driving motor; 8. Positioning hole. DETAILED DESCRIPTION

[0028] The following combination Figures 1-11 This application is described in further detail. Example 1

[0029] The embodiment of the present application discloses a forming mold for a sole having a curved support member.

[0030] Reference Figure 1 、 Figure 2 The forming mold of the sole with a curved support member includes an upper mold 2 and a lower mold 3. A mounting platform 6 is installed at the bottom of the lower mold 3, and a first slide rail 65 is installed on the mounting platform 6. The lower mold 3 includes two translation seats 31, and the two translation seats 31 are both slidably installed on the first slide rail 65 of the mounting platform 6. The two translation seats 31 are slidably installed on the mounting platform 6 through the first slide rail 65.

[0031] The mounting platform 6 is provided with a first driving member 7 for driving the two translation seats 31 toward or away from each other. In this embodiment, the first driving member 7 includes a driving screw 71 and a driving motor 72. The driving screw 71 is rotatably mounted on the lower surface of the mounting platform 6. The bottom wall of each translation seat 31 is fixedly connected to a connecting block 311. The connecting block 311 passes through the mounting platform 6 and extends to the lower surface of the mounting platform 6. The driving screw 71 is sequentially inserted through the connecting blocks 311 of the two translation seats 31. The driving screw 71 and the connecting blocks 311 of the two translation seats 31 are both threadedly connected, and the threads of the driving screw 71 and the connecting blocks 311 of the two translation seats 31 are arranged in opposite directions. The driving motor 72 is fixedly mounted on the side wall of the mounting platform 6, and the output shaft of the driving motor 72 is coaxially connected to the driving screw 71.

[0032] A mounting bracket 66 is fixedly installed on the mounting table 6, and the upper mold 2 is slidably installed on the mounting bracket 66 and is located on the top of the lower mold 3. The mounting bracket 66 is provided with a second driving member. In this embodiment, the second driving member is configured as a driving cylinder 661. The cylinder body of the driving cylinder 661 is fixedly installed on the mounting bracket 66, and the piston rod of the driving cylinder 661 is fixedly connected to the top wall of the upper mold 2. When the piston rod of the driving cylinder 661 contracts inward, the upper mold 2 is lifted away from the lower mold 3. When the piston rod of the driving cylinder 661 extends outward, the upper mold 2 is pressed against the lower mold 3.

[0033] Reference Figure 2 、 Figure 3 The bottom wall of the upper mold 2 is provided with a first molding groove 21, and the side walls of the two translation seats 31 close to each other are provided with second molding grooves 33. When the two translation seats 31 are abutted against each other to form the lower mold 3, and the upper mold 2 is pressed onto the lower mold 3, the first molding groove 21 and the two second molding grooves 33 are combined to form the above-mentioned mold cavity. The upper mold 2 is provided with a first injection hole connected to the mold cavity. A first injection head 22 is fixedly connected to the first injection hole. The first injection head 22 is used to inject molding material into the mold cavity (the injection head is a prior art structure and its structure will not be elaborated on here). The first injection head 22 is connected to a first injection tube. One end of the first injection tube is fixedly connected to the first injection head 22, and the other end is used to connect to the injection molding equipment (not shown in the figure); the upper mold 2 is provided with an exhaust hole (not shown in the figure).

[0034] Reference Figure 3 、 Figure 4 A support member 1 is disposed within the mold cavity. Each end of the support member 1 has a deformable portion 13. The support member 1 is intended to be embedded within the sole of a shoe. The two deformable portions 13 of the support member 1 are located on the sole and heel of the human body, respectively. The deformable portions 13 are annular and form a deformable cavity 11 with open ends. The surface of the support member 1 has a hollow mesh 14 to reduce its overall weight.

[0035] The opposite inner walls of the two translation seats 31 are fixedly installed with shaping columns 32. The number of shaping columns 32 of each translation seat 31 is set corresponding to the number of deformation parts 13 of the support member 1. When the two translation seats 31 abut against each other, the shaping columns 32 of the translation seat 31 are embedded in the deformation cavity 11 of the corresponding deformation part 13.

[0036] The implementation principle of Example 1 of the present application is as follows: When performing injection molding of the sole, the prefabricated support member 1 is placed between two translation seats 31, and the two translation seats 31 are driven toward each other, so that the shaping column 32 is embedded in the deformation cavity 11 of the support member 1; then, the upper mold 2 is pressed together, and molding material is injected into the mold cavity. After the molding material solidifies, the upper mold 2 is driven to rise, forcing the two translation seats 31 away from each other, thereby producing a sole with the support member 1. The sole is molded in one piece, so that the sole is wrapped around the support member, avoiding the use of bonding, and improving the structural strength of the sole. Example 2

[0037] The embodiment of the present application discloses a forming mold for a sole having a curved support member.

[0038] The difference between the forming mold of the sole with curved support member disclosed in the embodiment of the present application and that in embodiment 1 is that: Reference Figure 5 In this embodiment, a second slide rail 67 is installed on the mounting platform 6, and the length direction of the second slide rail 67 is perpendicular to the length direction of the first slide rail 65. A transfer seat 61 is slidably installed on the second slide rail 67, and a positioning groove 611 is provided on the top wall of the transfer seat 61 for the support member 1 to match and embed.

[0039] A push cylinder 612 is fixedly mounted on the mounting platform 6. The cylinder body of the push cylinder 612 is fixedly mounted on the mounting platform 6. The piston rod of the push cylinder 612 is fixedly connected to the transfer seat 61. When the piston rod of the push cylinder 612 extends outward, the transfer seat 61 moves below the upper mold 2. When the piston rod of the push cylinder 612 retracts inward, the transfer seat 61 moves out from under the upper mold 2. The side wall of the transfer seat 61 away from the push cylinder 612 forms a push surface 613. When the transfer seat 61 moves below the upper mold 2, the push surface 613 is used to push the formed sole out from under the upper mold 2.

[0040] Reference Figure 5 、 Figure 6 、 Figure 7A positioning column 4 is installed in the first molding groove 21 of the upper mold 2, and an adsorption chamber 41 is opened in the positioning column 4. The upper end of the positioning column 4 extends to the top of the upper mold 2, and the outer peripheral wall of the upper end of the positioning column 4 is connected to an adsorption tube (not shown in the figure), the inlet end of the adsorption tube is connected to the adsorption chamber 41, and the outlet end of the adsorption tube is connected to the exhaust equipment (such as a vacuum pump); an isolation ring 43 is fixedly installed at the lower end of the positioning column 4, and a plurality of adsorption holes 411 connected to the adsorption chamber 41 are opened on the bottom wall of the isolation ring 43.

[0041] The support member 1 has a docking piece 12, which is located between the two deformation parts 13. The docking piece 12 is used for adsorption by the positioning column 4. It should be noted that in this embodiment, the positioning column 4 is arranged at an angle, and the central axis of the positioning column 4 is perpendicular to the surface of the docking piece 12 for adsorbing the docking piece 12.

[0042] A sliding groove 211 is provided on the inner wall of the first molding groove 21, and the positioning column 4 is slidably installed in the sliding groove 211; when the positioning column 4 is separated from the sole, a positioning hole 8 is formed on the surface of the sole; a second injection hole 42 is provided on the positioning column 4, and the adsorption cavity 41 is located on the outside of the second injection hole 42. A second injection head 421 (not shown in the figure) is fixedly installed in the second injection hole 42, and the second injection head 421 is used to inject molding material into the positioning hole 8. The second injection head 421 is connected to a second injection tube 422, one end of the second injection tube 422 is fixedly connected to the second injection head 421, and the other end passes through the second injection hole 42 and is used to connect to the injection molding equipment.

[0043] Reference Figure 5 、 Figure 6 The upper mold 2 is provided with a lifting assembly 5 for driving the positioning column 4 to move up and down. The lifting assembly 5 includes a lifting ring 51, a lifting rod 52 and a lifting part. The lifting ring 51 is slidably installed on the positioning column 4 and is located at the bottom of the isolation ring 43. A plurality of connecting holes 511 are opened on the surface of the lifting ring 51, and the plurality of connecting holes 511 and the plurality of adsorption holes 411 are staggered; one end of the lifting rod 52 is connected to the lifting ring 51, and the other end passes through the isolation ring 43 and extends to the top of the upper mold 2.

[0044] A lifting member is provided on the upper mold 2 to drive the lifting rod 52 to lift and lower. In this embodiment, the lifting member is provided as a lifting cylinder 53. A bracket 23 is fixedly installed on the top wall of the upper mold 2. The cylinder body of the lifting cylinder 53 is fixedly installed on the bracket 23. The piston rod of the lifting cylinder 53 is fixedly connected with a connecting ring 531. The connecting ring 531 is fixedly connected to the lifting rod 52. When the piston rod of the lifting cylinder 53 retracts inward, the positioning column 4 is lifted away from the positioning hole 8 and the adsorption chamber 41 is closed. When the piston rod of the lifting cylinder 53 extends outward, the positioning column 4 is inserted into the first molding groove 21 and the adsorption chamber 41 is opened.

[0045] Reference Figure 6 、 Figure 7 The outer wall of the positioning column 4 is provided with a plurality of exhaust ducts 44, and the plurality of exhaust ducts 44 are arranged at intervals around the central axis of the positioning column 4, and both ends of each exhaust duct 44 are extended along the central axis of the positioning column 4, and the two ends of each exhaust duct 44 respectively pass through the upper end face and the lower end face of the positioning column 4; the inner wall of the exhaust duct 44 is provided with a sinking groove 441, and a blocking strip 45 is slidably installed in the sinking groove 441, and the outer wall of the blocking strip 45 has a plurality of grooves 451; the blocking strip 45 is fixedly connected to a plurality of second connecting rods 47, and the end of each second connecting rod 47 away from the blocking strip 45 penetrates the adsorption chamber 41, and a first connecting rod 46 is connected between the blocking strip 45 and the lifting rod 52, and one end of the first connecting rod 46 is hinged to the second connecting rod 47 of the blocking strip 45, and the other end of the first connecting rod 46 is hinged to the lifting rod 52.

[0046] When the lifting ring 51 abuts the isolation ring 43, the first connecting rod 46 forces the sealing strip 45 to slide toward the center of the positioning column 4 to open the exhaust duct 44. When the lifting ring 51 moves down to be flush with the lower end surface of the positioning column 4, the sealing strip 45 blocks the exhaust duct 44, and the length direction of the first connecting rod 46 rotates to be consistent with the length direction of the second connecting rod 47.

[0047] Reference Figure 7 For the convenience of description, the area at the bottom of the isolation ring 43 is defined as the adsorption area 431 below. A ventilation channel 48 is opened at the lower end of the positioning column 4. One end of the ventilation channel 48 is connected to the exhaust channel 44, and the other end is connected to the adsorption area 431. When the lifting ring 51 slides to keep translation with the lower end surface of the positioning column 4, the lifting ring 51 and the blocking strip 45 respectively block the two ends of the ventilation channel 48; when the lifting ring 51 is lifted to abut against the isolation ring 43, the lifting ring 51 and the blocking strip 45 are respectively separated from the two ends of the ventilation channel 48, so that the exhaust channel 44 and the adsorption area 431 are connected.

[0048] Reference Figure 8 、 Figure 9 A limit plate 62 is installed on the side of the two translation seats 31 that is away from each other. An ejection groove is formed on the inner wall of the second molding groove 33 of the translation seat 31. An ejection rod 34 is installed in the ejection groove. One end of the ejection rod 34 extends out of the translation seat 31 and is connected to the limit plate 62. In this embodiment, the ejection rod 34 and the limit plate 62 are fixedly connected. A limit slide 68 is slidably installed on the surface of the mounting platform 6. The limit plate 62 is fixedly mounted on the limit slide 68. The limit plate 62 is slidably mounted on the mounting platform 6 via the limit slide 68 so that it can move closer to or farther away from the translation seat 31. A first spring 681 is installed between the limit slide 68 and the mounting platform 6. The first spring 681 forces the limit slide 68 to slide toward the side closer to the translation seat 31.

[0049] The mounting platform 6 is slidably mounted with a limit block 63 that limits the position of the limit plate 62. A second spring 631 is installed between the limit block 63 and the mounting platform 6. A limit slot 682 is defined in the bottom wall of the limit slide 68. The second spring 631 normally forces the limit block 63 to rise and engage with the limit slot 682 of the limit slide 68. An unlocking bar 64 is fixedly mounted on the limit block 63. The upper end of the unlocking bar 64 extends to the top of the mounting platform 6. The unlocking bar 64 is located on the side of the limit plate 62 near the translation seat 31. The top of the unlocking bar 64 has a guide surface 641 for the translation seat 31 to abut. When the translation seat 31 slides until it abuts the limit plate 62, the translation seat 31 forces the unlocking bar 64 downward via the guide surface 641, allowing the limit block 63 to disengage from the limit slot 682 of the limit plate 62.

[0050] The operating principle of Example 2 of the present application is as follows: When installing support member 1, first place support member 1 in positioning groove 611 of transfer seat 61. Positioning groove 611 serves to position support member 1 in its installation orientation. Transfer seat 61 is then driven to slide between the two translation seats 31, lowering upper mold 2 so that positioning posts 4 of upper mold 2 can absorb support member 1. After support member 1 is transferred to positioning posts 4 of upper mold 2, the two translation seats 31 are driven toward each other, precisely installing support member 1 within the mold cavity and improving the installation accuracy of support member 1.

[0051] After the sole is formed, the lifting ring 51 is driven to rise, and the lifting ring 51 is driven to abut the isolation ring 43. During this process, the lifting rod 52 pulls the blocking strip 45 through the first connecting rod 46, forcing the blocking strip 45 to slide toward the center of the positioning column 4 to break away from the inner wall of the positioning hole 8, thereby opening the exhaust duct 44. The lifting rod 52 is continued to be driven to rise, and the positioning column 4 can be lifted away from the positioning hole 8. The blocking strip 45 slides toward the center of the positioning column 4. On the one hand, it can reduce the contact area between the positioning column 4 and the inner wall of the positioning hole 8 during the lifting process of the positioning column 4, thereby reducing the friction resistance encountered by the positioning column 4 during the lifting process; on the other hand, it can make the space in the positioning hole 8 communicate with the outside world through the exhaust duct 44, thereby facilitating the second injection head 421 to fill the positioning hole 8 with molding material, reducing the generation of bubbles in the positioning hole 8 and improving the injection molding effect.

[0052] After the injection molding in the positioning hole 8 is completed, the upper mold 2 is driven to lift and the two translation seats 31 are forced to move away from each other. The ejector rod 34 can eject the molded sole outward, thereby realizing demoulding between the sole and the translation seat 31 and improving the demoulding efficiency; after the sole is separated from the translation seat 31, the two translation seats 31 are continued to be driven away from each other, and the translation seat 31 forces the limit block 63 to separate from the limit plate 62 through the unlocking bar 64. At this time, the limit plate 62 slides under the push of the translation seat 31, thereby driving the ejector rod 34 to slide, so that the ejector rod 34 is separated from the sole, thereby improving the demoulding effect. Example 3

[0053] The embodiment of the present application discloses a forming mold for a sole having a curved support member.

[0054] The difference between the forming mold of the sole with curved support member disclosed in the embodiment of the present application and that in embodiment 2 is that: Reference Figure 10 In this embodiment, the ejector rod 34 is rotatably connected to the limit plate 62. A linkage assembly is provided between the ejector rod 34 and the mounting platform 6. When the two translation seats 31 move away from each other, the linkage assembly forces the ejector rod 34 to rotate about its own central axis. A mounting plate 69 is fixedly mounted on the surface of the mounting platform 6. The mounting plate 69 is located on the side of the limit plate 62 away from the translation seat 31. The linkage assembly includes a linkage wheel 691 and a transmission member. The linkage wheel 691 is rotatably mounted on the mounting plate 69. The end of the ejector rod 34 away from the translation seat 31 is inserted into the linkage wheel 691. The ejector rod 34 and the linkage wheel 691 engage via a keyway, achieving circumferential linkage (i.e., the linkage wheel 691 can drive the ejector rod 34 to rotate synchronously, and the ejector rod 34 can slide relative to the linkage wheel 691).

[0055] The transmission member is configured as a belt (not shown in the figure), which is wound around the linkage wheel 691 and the drive screw 71 (the drive screw 71 is not shown in this embodiment), so that when the drive screw 71 drives the translation seat 31 to slide, the ejection rod 34 can rotate around its own central axis.

[0056] The implementation principle of Example 3 of the present application is: when the two translation seats 31 are driven away from each other, the ejector rod 34 can eject the molded sole out of the second molding groove 33 of the translation seat 31. During this process, the linkage wheel 691 forces the ejector rod 34 to rotate around its own central axis, and the ejector rod 34 and the sole rotate relative to each other, thereby forcing the surface of the ejector rod 34 to separate from the sole, so that the transfer seat 61 can push the molded sole outward, thereby improving the demolding efficiency. Example 4

[0057] The embodiment of the present application also discloses a molding process for a sole having a curved support member.

[0058] Reference Figure 11 The molding process of the sole with a curved support member specifically comprises the following steps: S1. Fabrication of support member 1: a. Select titanium alloy as raw material and form a support body through 3D printing; b. Cover the outer surface of the support body with a TPU layer to form a composite support member 1. In other embodiments, the support body can also be made of aluminum alloy.

[0059] S2. Installation of the support member 1: placing the support member 1 in the mold cavity of the forming mold.

[0060] S3. Injection molding: Inject molding material into the mold cavity so that the molding material wraps around the support member 1. The molding material can be EVA.

[0061] S4, demoulding: After the molding material is shaped, demoulding is performed to remove the molded sole.

[0062] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A forming mold for a sole with a curved support member, characterized in that: The invention comprises an upper die (2) and a lower die (3), wherein the upper die (2) is slidably mounted on the top of the lower die (3); the lower die (3) comprises two translation seats (31), the inner walls of the two translation seats (31) facing each other are provided with shaping columns (32), and the support member (1) has a deformation cavity (11) for the shaping columns (32) to be embedded; the bottom wall of the upper die (2) is provided with a first shaping groove (21), the side walls of the two translation seats (31) close to each other are provided with a second shaping groove (33), and the second shaping groove (34) is provided with a second shaping groove (35). A molding groove (21) and two second molding grooves (33) are combined to form a mold cavity; the upper mold (2) is provided with a first injection hole connected to the mold cavity, and the first injection hole is connected to a first injection head (22); a positioning column (4) is provided in the first molding groove (21), and an adsorption cavity (41) is provided in the positioning column (4); an adsorption hole (411) connected to the adsorption cavity (41) is provided at the lower end of the positioning column (4), and the support member (1) has a docking piece (12) for the positioning column (4) to abut.

2. The forming mold for the sole with a curved support member according to claim 1, characterized in that: The positioning column (4) is slidably connected to the upper mold (2); the upper mold (2) is provided with a lifting assembly (5) for driving the positioning column (4) to move up and down; when the positioning column (4) is separated from the sole, a positioning hole (8) is formed on the surface of the sole; the positioning column (4) is provided with a second injection hole (42), and a second injection head (421) is provided in the second injection hole (42).

3. The forming mold for the sole with a curved support member according to claim 2, characterized in that: The positioning column (4) has an isolation ring (43), and the adsorption hole (411) is arranged on the isolation ring (43); the lifting assembly (5) includes a lifting ring (51), a lifting rod (52) and a lifting member, the lifting ring (51) is slidably installed on the positioning column (4) and is located at the bottom of the isolation ring (43), and a connecting hole (511) is opened on the surface of the lifting ring (51), and the connecting hole (511) and the adsorption hole (411) are staggered; one end of the lifting rod (52) is connected to the lifting ring (51), and the other end passes through the isolation ring (43) and extends to the top of the upper mold (2), and the lifting member is arranged on the upper mold (2) to drive the lifting rod (52) to move up and down.

4. The forming mold for the sole with a curved support member according to claim 3, characterized in that: An exhaust passage (44) is provided on the outer peripheral wall of the positioning column (4), and a blocking strip (45) is slidably installed in the exhaust passage (44); a first connecting rod (46) is connected between the blocking strip (45) and the lifting rod (52), one end of the first connecting rod (46) is hinged to the blocking strip (45), and the other end is hinged to the lifting rod (52); when the lifting ring (51) abuts against the isolation ring (43), the first connecting rod (46) forces the blocking strip (45) to slide toward the center of the positioning column (4) to open the exhaust passage (44).

5. The forming mold for the sole with a curved support member according to claim 4, characterized in that: The blocking strip (45) is connected to a second connecting rod (47), and one end of the second connecting rod (47) away from the blocking strip (45) penetrates into the adsorption chamber (41) and is hinged to the first connecting rod (46); when the lifting ring (51) moves down to be flush with the lower end surface of the positioning column (4), the length direction of the first connecting rod (46) rotates to be consistent with the length direction of the second connecting rod (47).

6. The forming mold for the sole with a curved support member according to claim 1, characterized in that: A mounting platform (6) is provided at the bottom of the lower mold (3), and the two translation seats (31) are both slidably mounted on the mounting platform (6); a transfer seat (61) for transferring the support member (1) or the sole is slidably mounted on the mounting platform (6), and a top wall of the transfer seat (61) is provided with a positioning groove (611) for the support member (1) to be matched and embedded.

7. The forming mold for the sole with a curved support member according to claim 6, characterized in that: A limiting plate (62) is provided on the side of the two translation seats (31) that are away from each other. An ejection groove is provided on the inner wall of the second forming groove (33) of the translation seat (31). An ejection rod (34) is provided in the ejection groove. One end of the ejection rod (34) extends out of the translation seat (31) and is connected to the limiting plate (62).

8. The forming mold for the sole with a curved support member according to claim 7, characterized in that: The limit plate (62) is slidably mounted on the mounting platform (6), and a limit block (63) for limiting the position of the limit plate (62) is slidably mounted on the mounting platform (6), and the limit block (63) is connected to an unlocking bar (64). When the translation seat (31) slides to abut against the limit plate (62), the unlocking bar (64) forces the limit block (63) to separate from the limit plate (62).

9. The forming mold for the sole with a curved support member according to claim 7, characterized in that: The ejector rod (34) is rotatably connected to the limiting plate (62), and a linkage assembly is provided between the ejector rod (34) and the mounting platform (6). When the two translation seats (31) move away from each other, the linkage assembly forces the ejector rod (34) to rotate around its own central axis.

10. A molding process for a sole with a curved support member, based on the molding die for a sole with a curved support member according to any one of claims 1 to 9, comprising the following steps: S1. Manufacturing of support member (1); S2. Installation of the support member (1): placing the support member (1) in the mold cavity of the forming mold; S3, injection molding: injecting molding material into the mold cavity so that the molding material wraps around the support member (1); S4. Demolding.

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