Injection molding mold for two-color shock-absorbing sole and production method thereof

Abstract

The invention discloses an injection molding mold for a two-color shock-absorbing sole and a production method thereof. The injection molding mold is provided with a movable mold core on a top mold, and continuous injection molding is realized by two injection molding working positions of the movable mold core on the top mold to obtain a two-color sole. When the movable mold core is in a first working position, the first punch and the second punch are in a one-time injection molding state, at which time the first air channel sucks air into the mold cavity, and the first injection molding channel performs one-time injection molding on the mold cavity; when the movable mold core is in a second working position, the first punch and the second punch are in a two-time injection molding state, at which time the second air channel and the third air channel suck air into the mold cavity, and the second injection molding channel performs two-time injection molding on the mold cavity. The injection molding mold of the invention can realize the presentation of two different materials on the same sole, and complete the production of the two-color sole at one time, which greatly simplifies the processing flow, significantly improves the production efficiency, and improves the reliability and durability of the product.

Description

Technical Field

[0001] The invention relates to the technical field of shoe sole injection molding, and in particular to an injection molding mold for a double-color shock-absorbing shoe sole and a production method thereof. Background Art

[0002] Two-color soles refer to the soles of shoes made of two different colors or materials. With the development of the times and the needs of different groups of people, the design requirements for soles are constantly improving and updating. For example, the design of sports shoes involves many aspects such as comfort, functionality and aesthetics.

[0003] In ball sports and track and field sports, the shock absorption and support performance of the soles have gradually become the dominant design features. This refers to the ability of the soles to absorb, disperse and transform the impact energy when subjected to external impact, thereby reducing damage to the wearer's feet, which helps protect the feet from the impact of actions such as walking, running or jumping; while support performance refers to the ability of the soles to provide better support to the wearer during exercise, especially the rollover of the forefoot, which can maintain the wearer's correct gait.

[0004] As attached Figure 1 and attached Figure 2 The two-color shock-absorbing sole of the sports shoe shown comprises an integrally formed outsole 10, a recessed area 30 is provided at the outer side of the forefoot of the outsole 10, and a side support gasket 20 is formed in the recessed area 30, wherein the outsole 10 is made of shock-absorbing material, and the side support gasket 20 is made of a material with relatively good hardness and rigidity, which can provide a more stable support force to the outer side of the forefoot of the wearer, avoiding the occurrence of side rollover and sprain of the foot due to excessive force on the forefoot, and at the same time, the shock-absorbing outsole 10 has the functions of buffering and performance rebound, ensuring the comfort of the wearer. The existing processing method of the two-color shock-absorbing sole is bonding, which requires the molded outsole 10 and the side support gasket 20 to be glued to each other, but this has the problem of complex processing technology, which affects the production efficiency of the sole, and the defect of poor consistency of the sole, which may cause debonding during high-intensity exercise.

[0005] In view of this, it is urgent to design an injection molding mold and a production method for a two-color shock-absorbing sole to improve the quality and production efficiency of the two-color shock-absorbing sole. Summary of the invention

[0006] In order to solve the above problems, the present invention provides an injection molding mold for a two-color shock-absorbing sole and a production method thereof.

[0007] In a first aspect of the present invention, an injection molding mold for a two-color shock-absorbing sole is provided, comprising a bottom mold and a top mold located above the bottom mold, wherein the top mold is provided with a vertically movable mold core, and the movable mold core has a first working position and a second working position on the top mold; the bottom mold is provided with a sole mold cavity, and the top mold and the movable mold core are respectively provided with a first convex mold and a second convex mold at positions facing the sole mold cavity, and when the movable mold core moves from the first working position to the second working position, the second convex mold is vertically displaced relative to the first convex mold; the top mold is respectively provided with a plurality of A first air duct and a second air duct are provided, the exhaust hole of the first air duct is located on the surface of the first punch, a third air duct is provided on the movable mold core, the exhaust hole of the third air duct is located on the surface of the second punch, and when the movable mold core is in the second working position, the second air duct is communicated with the third air duct; a first injection channel and a second injection channel are respectively provided on the bottom mold, the outlet of the first injection channel is located at a position where the inner wall of the sole mold cavity faces the first punch, and the outlet of the second injection channel is located at a position where the inner wall of the sole mold cavity faces the second punch.

[0008] The present invention is further configured such that an airway opening is opened on the movable mold, an air pipe is fixed inside the movable mold, and the third airway is the inner cavity of the air pipe; the first end of the air pipe is a connecting port connected to the second airway, and the connecting port is arranged close to the airway opening, and the second end of the air pipe is the suction hole of the third airway.

[0009] The present invention is further configured such that a reset chamber and a stroke chamber are opened inside the movable mold core; a docking tube is provided inside the reset chamber, and a boss portion is provided on the outer periphery of the docking tube, the diameter of the boss portion is larger than the inner diameter of the airway opening, and the two sides of the boss portion are respectively an extension portion and a sleeve portion, a reset spring is sleeved on the sleeve portion, one end of the reset spring abuts against the boss portion, and the other end of the reset spring abuts against the inner wall of the reset chamber, and the extension portion extends out from the airway opening or retracts into the reset chamber as the docking tube moves horizontally; a toggle portion is provided at one end of the sleeve portion away from the extension portion, the toggle portion is movably connected in the stroke chamber, and one end of the toggle portion extends to the outside of the movable mold core.

[0010] The present invention is further configured such that the air pipe includes a first connecting pipe part and a second connecting pipe part, a bent pipe part is provided between the first connecting pipe part and the second connecting pipe part, a through groove is provided on the butt joint pipe, a notch is provided at the end of the sleeve part, the first connecting pipe part is located in the through groove, and the second connecting pipe part is inserted into the notch.

[0011] The present invention is further configured such that positioning components are provided on both sides of the movable mold core, the positioning components include a top ball, a positioning piece, a positioning spring and a plug, the top ball and the positioning spring are both located inside the positioning piece, the plug is connected to one end of the positioning piece, and the top ball protrudes from the surface of the movable mold core; a mold core opening is provided on the top mold, and a first positioning groove and a second positioning groove are provided on the inner wall of the mold core opening, and the top ball is respectively adapted to the first positioning groove and the second positioning groove.

[0012] The present invention is further configured such that a connecting column for vertical movement of the movable mold core is provided on the top of the movable mold core.

[0013] The present invention is further configured such that the movable mold core is formed by splicing two side mold cores.

[0014] The present invention is further configured such that the bottom mold includes a first bottom mold and a second bottom mold, and positioning holes are provided on the first bottom mold and the second bottom mold, and a positioning pin is provided at a position of the top mold opposite to the positioning hole, and the positioning pin is connected to the positioning hole; the first bottom mold, the second bottom mold and the top mold are all provided with connecting columns.

[0015] The present invention is further configured to include a temperature sensor and an air pressure sensor. The temperature sensor respectively collects the internal injection temperature of the first injection channel and the second injection channel, and the air pressure sensor respectively detects the internal air pressure of the first air channel and the second air channel.

[0016] In a second aspect of the present invention, a method for producing a two-color shock-absorbing sole is provided, using the above-mentioned injection molding mold, comprising:

[0017] Obtain the sole production instruction, adjust the movable mold core to the second working position, and supply air to the first air channel and the second air channel of the top mold to clean the first air channel, the second air channel and the third air channel respectively;

[0018] The first bottom mold and the second bottom mold are driven to move to the injection molding station, and the first bottom mold and the second bottom mold are spliced ​​into a complete bottom mold; the top mold is driven to descend, and the toggle part is moved to shrink the extension part into the reset cavity, and the movable mold core is driven to adjust from the second working position to the first working position, so that the first convex mold, the second convex mold and the sole mold cavity form a large sole molding cavity, and the injection molding mold is in a one-time injection molding state at this time;

[0019] Suction is performed on the first air channel to extract gas in the outsole molding cavity, so that the air pressure inside the outsole molding cavity is lower than the first pressure value, and the molten first material is injected into the outsole molding cavity through the first injection channel;

[0020] After the first material is injected, the shoe outsole is obtained after being cooled; the movable mold core is driven to adjust from the first working position to the second working position, and the extension part extends out of the airway opening under the action of the return spring to connect with the second airway, so that the third airway is connected with the second airway, and the side support gasket molding cavity is formed between the first punch, the second punch, the sole mold cavity and the shoe outsole, and the injection molding mold is in a secondary injection molding state at this time;

[0021] Suction is performed on the second air channel to extract gas from the side support gasket molding cavity, so that the gas pressure inside the side support gasket molding cavity is lower than the second pressure value, and the molten second material is injected into the side support gasket molding cavity through the second injection channel;

[0022] After the second material is injected, the two-color sole is obtained after being cooled. The top mold is driven to rise, and the first bottom mold and the second bottom mold are opened to remove the two-color sole, thus completing the sole injection molding.

[0023] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0024] This technical solution is to improve the injection molding mold, set a movable mold core on the top mold, and realize continuous injection molding through the two injection molding working positions of the movable mold core on the top mold to obtain a two-color sole. When the movable mold core is in the first working position, the first punch and the second punch are in a one-time injection molding state, at which time the first air channel sucks air into the mold cavity and the first injection molding channel performs one-time injection molding on the mold cavity; when the movable mold core is in the second working position, the first punch and the second punch are in a two-time injection molding state, at which time the second air channel and the third air channel suck air into the mold cavity and the second injection molding channel performs two-time injection molding on the mold cavity.

[0025] The injection molding mold of the present invention can realize the presentation of two different materials on the same sole through the vertical movement of the movable mold core and the ingenious arrangement of the airway, thereby meeting the diverse demands of consumers for soles; and the injection molding can complete the production of the two-color sole at one time, which greatly simplifies the processing flow, significantly improves the production efficiency, ensures that the soles produced each time are highly consistent in material, structure and performance, and improves the reliability and durability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional diagram of a two-color sole to be molded by the injection molding mold according to an embodiment of the present invention.

[0027] Figure 2 This is an exploded view of a two-color sole to be molded by the injection molding mold according to an embodiment of the present invention.

[0028] Figure 3 This is a three-dimensional diagram of an injection molding mold according to an embodiment of the present invention.

[0029] Figure 4This is an exploded view of an injection molding mold according to an embodiment of the present invention.

[0030] Figure 5 It is a three-dimensional diagram of the top mold of an embodiment of the present invention.

[0031] Figure 6 It is a three-dimensional diagram of the bottom mold of an embodiment of the present invention.

[0032] Figure 7 This is a three-dimensional diagram of the bottom mold and the movable mold core in the first working position according to an embodiment of the present invention.

[0033] Figure 8 This is a three-dimensional diagram of the bottom mold and the movable mold core in the second working position according to an embodiment of the present invention.

[0034] Fig. 9 It is a side view of the injection molding mold according to an embodiment of the present invention.

[0035] Fig.10 for Fig. 9 Sectional view of AA.

[0036] Fig.11 It is a three-dimensional diagram of the movable mold core according to an embodiment of the present invention.

[0037] Fig.12 It is a cross-sectional view of the movable mold core according to an embodiment of the present invention.

[0038] Fig.13 This is a stereoscopic diagram of a butt joint according to an embodiment of the present invention.

[0039] Fig.14 This is a stereoscopic diagram of the trachea according to an embodiment of the present invention.

[0040] Fig.15 This is an exploded view of the positioning assembly according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0042] Example 1

[0043] Combined with Figure 3 To Attachment Fig.15As shown, the technical solution of the present invention is an injection molding mold for a two-color shock-absorbing sole, comprising a bottom mold 1 and a top mold 2 located above the bottom mold 1, wherein the top mold 2 is provided with a vertically movable mold core 3, and the movable mold core 3 has a first working position and a second working position on the top mold 2; the bottom mold 1 is provided with a sole mold cavity 11, and the top mold 2 and the movable mold core 3 are respectively provided with a first punch 21 and a second punch 31 at positions facing the sole mold cavity 11, and when the movable mold core 3 moves from the first working position to the second working position, the second punch 31 is vertically displaced relative to the first punch 21; the top mold 2 is respectively provided with a first airway 22 and a second airway 23 and a second airway 24. The air channel 23, the first air exhaust hole 24 of the first air channel 22 is located on the surface of the first punch 21, the third air channel 32 is opened on the movable mold core 3, the second air exhaust hole 33 of the third air channel 32 is located on the surface of the second punch 31, when the movable mold core 3 is in the second working position, the second air channel 23 is connected with the third air channel 32; the first injection channel 12 and the second injection channel 13 are respectively opened on the bottom mold 1, the outlet of the first injection channel 12 is located at the inner wall of the sole mold cavity 11 facing the first punch 21, and the outlet of the second injection channel 13 is located at the inner wall of the sole mold cavity 11 facing the second punch 31.

[0044] Attached Figure 7 When the movable mold core 3 is in the first working position, the positional relationship between the movable mold core 3 and the top mold 2; Figure 8 The movable mold core 3 is the positional relationship between the movable mold core 3 and the top mold 2 when the movable mold core 3 is in the second working position. The direction in which the movable mold core 3 moves from the first working position to the second working position is the attached Figure 4 The direction of the explosion axis.

[0045] In this embodiment, when the movable mold core 3 is in the first working position, the second air passage 23 is not connected to the third air passage 32 .

[0046] In this embodiment, when the sole mold cavity 11 is subjected to a first injection molding, the movable mold core 3 is in a first working position, the first air channel 22 is evacuated, and the first injection molding channel 12 is used to inject the first material; when the sole mold cavity 11 is subjected to a second injection molding, the movable mold core 3 is in a second working position, the second air channel 23 and the third air channel 32 are evacuated, and the second injection molding channel 13 is used to inject the second material.

[0047] This technical solution is to improve the injection molding mold, and a movable mold core 3 is set on the top mold 2, and continuous injection is achieved through the two injection working positions of the movable mold core 3 on the top mold 2 to obtain a two-color sole. When the movable mold core is in the first working position, the first punch 21 and the second punch 31 are in a one-time injection state, at which time the first air channel 22 sucks air into the mold cavity, and the first injection channel 12 performs one-time injection on the mold cavity; when the movable mold core is in the second working position, the first punch 21 and the second punch 31 are in a two-time injection state, at which time the second air channel 23 and the third air channel 32 suck air into the mold cavity, and the second injection channel 13 performs two-time injection on the mold cavity.

[0048] In this embodiment, as shown in the attached Fig.10 To Attachment Fig.12 As shown, an airway opening 34 is opened on the movable mold core 3, an air pipe 4 is fixed inside the movable mold core 3, and the third airway 32 is the inner cavity of the air pipe 4; the first end of the air pipe 4 is a connecting port 41 connected to the second airway 23, and the connecting port 41 is arranged close to the airway opening 34, and the second end of the air pipe 4 is the second air suction hole 33 of the third airway 32.

[0049] In this embodiment, as shown in the attached Fig.12 As shown, a reset chamber 35 and a stroke chamber 36 are provided inside the movable mold core 3; a docking tube 5 is provided inside the reset chamber 35, and a boss portion 51 is provided on the outer periphery of the docking tube 5, the diameter of the boss portion 51 is larger than the inner diameter of the airway opening 34, and the two sides of the boss portion 51 are respectively an extension portion 52 and a sleeve portion 53, and a reset spring 54 is sleeved on the sleeve portion 53, one end of the reset spring 54 is against the boss portion 51, and the other end of the reset spring 54 is against the inner wall of the reset chamber 35, and the extension portion 52 extends from the airway opening 34 or retracts into the reset chamber 35 as the docking tube 5 moves horizontally; a toggle portion 55 is provided at one end of the sleeve portion 53 away from the extension portion 52, and the toggle portion 55 is movably connected in the stroke chamber 36, and one end of the toggle portion 55 extends to the outside of the movable mold core 3.

[0050] In this embodiment, the extension and retraction movement of the extension portion 52 can be controlled by controlling the toggle portion 55. When the extension portion 52 extends out of the airway opening 34, it can be connected with the outer periphery of the second airway 23, so that the coordination between the second airway 23 and the third airway 32 is more precise, and the efficiency of air extraction is higher; when the extension portion 52 is retracted into the reset cavity 35, it is used to release the docking structure between the docking tube 5 and the second airway 23, thereby facilitating the switching of the movable mold core 3 from the second working position to the first working position.

[0051] In this embodiment, as shown in the attached Fig.13 and attached Fig.14 As shown, the air pipe 4 includes a first connecting pipe part 42 and a second connecting pipe part 43, a bent pipe part 44 is provided between the first connecting pipe part 42 and the second connecting pipe part 43, a through groove 56 is provided on the butt joint pipe 5, a notch 57 is provided at the end of the sleeve part 53, the first connecting pipe part 42 is located in the through groove 56, and the second connecting pipe part 43 is inserted in the notch 57; this structure ensures that the air pipe 4 will not affect the lateral movement of the butt joint pipe 5.

[0052] In this embodiment, as shown in the attached Fig.15 As shown, positioning components 6 are provided on both sides of the movable mold core 3, and the positioning components 6 include a top ball 61, a positioning member 62, a positioning spring 63 and a plug 64. The top ball 61 and the positioning spring 63 are both located inside the positioning member 62, and the plug 64 is connected to one end of the positioning member 62. The top ball 61 protrudes from the surface of the movable mold core 3; a mold core opening 25 is provided on the top mold 2, and a first positioning groove 26 and a second positioning groove 27 are provided on the inner wall of the mold core opening 25, and the top ball 61 is respectively matched with the first positioning groove 26 and the second positioning groove 27.

[0053] In this embodiment, when the movable mold core 3 is in the first working position, the top bead 61 is clamped in the first positioning groove 26; when the movable mold core 3 is in the second working position, the top bead 61 is clamped in the second positioning groove 27. The positioning assembly 6 can accurately locate the two working positions of the movable mold core 3, thereby improving the processing accuracy and air extraction efficiency of the sole.

[0054] In this embodiment, a first connecting column 37 for vertical movement of the movable mold core 3 is provided on the top of the movable mold core 3; the first connecting column 37 is used for connection with an external driving source.

[0055] In this embodiment, the movable mold core 3 is formed by splicing two side mold cores, which facilitates the assembly of the air pipe 4 , the connecting pipe 5 and the positioning assembly 6 on the movable mold core 3 .

[0056] In this embodiment, the bottom mold 1 includes a first bottom mold 14 and a second bottom mold 15, and a positioning hole 16 is provided on the first bottom mold 14 and the second bottom mold 15. A positioning pin 28 is provided at a position of the top mold 2 opposite to the positioning hole 16, and the positioning pin 28 is connected to the positioning hole 16; a second connecting column 17 is provided on the first bottom mold 14 and the second bottom mold 15, and a third connecting column 29 is provided on the top mold 2, and the second connecting column 17 and the third connecting column 29 are used for connection with an external driving source.

[0057] In this embodiment, a temperature sensor and an air pressure sensor are also included. The temperature sensor collects the internal injection temperature of the first injection channel 12 and the second injection channel 13 respectively, and the air pressure sensor detects the internal air pressure of the first air channel 22 and the second air channel 23 respectively; the temperature sensor and the air pressure sensor are not shown in the drawings and do not affect the implementation of this technical solution. By setting the temperature sensor and the air pressure sensor, the temperature of each injection channel and the pressure of each air channel are fed back to the equipment controller where the injection molding mold is located, the injection temperature and the air extraction speed can be controlled more accurately, thereby ensuring the production quality of the two-color sole.

[0058] The injection molding mold of the present invention can realize the presentation of two different materials on the same sole through the vertical movement of the movable mold core and the ingenious arrangement of the airway, thereby meeting the diverse demands of consumers for soles; and the injection molding can complete the production of the two-color sole at one time, which greatly simplifies the processing flow, significantly improves the production efficiency, ensures that the soles produced each time are highly consistent in material, structure and performance, and improves the reliability and durability of the product.

[0059] Example 2

[0060] Combined with Figure 3 To Attachment Fig.15 The technical solution of the present invention is a method for producing a two-color shock-absorbing sole, using the injection molding mold described in Example 1, comprising:

[0061] Obtain the sole making instruction, adjust the movable mold core 3 to the second working position, and supply air to the first air channel 22 and the second air channel 23 of the top mold 2 to clean the first air channel 22, the second air channel 23 and the third air channel 32;

[0062] The first bottom mold 14 and the second bottom mold 15 are driven to move to the injection molding station, and the first bottom mold 14 and the second bottom mold 15 are spliced ​​into a complete bottom mold 1; the top mold 2 is driven to descend, and the toggle portion 55 is moved to shrink the extension portion 52 into the reset cavity 35, and the movable mold core 3 is driven to adjust from the second working position to the first working position, so that the first convex mold 21, the second convex mold 31 and the sole mold cavity 11 form a large sole molding cavity, and the injection molding mold is in a one-time injection molding state at this time;

[0063] The first air channel 22 is inhaled to extract the gas in the outsole molding cavity, so that the air pressure inside the outsole molding cavity is lower than the first pressure value, and the molten first material is injected into the outsole molding cavity through the first injection channel 12;

[0064] After the first material is injected, the shoe outsole is obtained after being cooled. The movable mold core 3 is driven to adjust from the first working position to the second working position. The extension portion 52 extends out of the airway opening 34 under the action of the return spring 54 to connect with the second airway 23, so that the third airway 32 is connected with the second airway 23. A side support gasket molding cavity is formed between the first punch 21, the second punch 31, the shoe outsole mold cavity 11 and the shoe outsole. At this time, the injection molding mold is in a secondary injection molding state.

[0065] The second air channel 23 is inhaled to extract the gas in the side support gasket molding cavity, so that the gas pressure inside the side support gasket molding cavity is lower than the second pressure value, and the molten second material is injected into the side support gasket molding cavity through the second injection channel 13;

[0066] After the second material is injected, the two-color sole is obtained after being cooled. The top mold 2 is driven to rise, and the first bottom mold 14 and the second bottom mold 15 are opened to remove the two-color sole, and the sole injection molding is completed.

[0067] In a specific embodiment, the first molten material injected into the outsole molding cavity is EVA (ethylene-vinyl acetate copolymer) material, and the second molten material injected into the side support gasket molding cavity is TPU (thermoplastic polyurethane elastomer) material; the melting point of the TPU material is lower than that of the EVA material, so that the shape of the outsole will not be affected during the secondary injection molding.

[0068] In a specific embodiment, the first pressure value and the second pressure value are determined according to the spatial size of the outsole molding cavity and the side support gasket molding cavity, and the outsole molding cavity and the side support gasket molding cavity are kept in a low vacuum state to remove most of the bubbles and air in the mold cavity.

[0069] In a specific embodiment, since the thickness of the recessed area to be formed on the side support gasket is relatively small, the melting heating power of the second material is controlled by collecting the temperature in the second injection channel 13 to avoid affecting the outsole during injection of the second material.

[0070] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0071] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An injection molding mold for a two-color shock-absorbing sole, characterized in that: The invention comprises a bottom mold and a top mold located above the bottom mold, wherein the top mold is provided with a movable mold core which can be moved vertically, and the movable mold core has a first working position and a second working position on the top mold; the bottom mold is provided with a sole mold cavity, and the top mold and the movable mold core are respectively provided with a first convex mold and a second convex mold at positions opposite to the sole mold cavity, and when the movable mold core moves from the first working position to the second working position, the second convex mold is displaced in the vertical direction relative to the first convex mold; the top mold is respectively provided with a first air channel and a second air channel, and the air suction hole of the first air channel is located on the surface of the first convex mold, and the movable mold core is provided with a third air channel, and the air suction hole of the third air channel is located on the surface of the second convex mold, and when the movable mold core is in the second working position, the second air channel is connected with the third air channel; the bottom mold is respectively provided with a first injection molding channel and a second injection molding channel, and the outlet of the first injection molding channel is located at a position where the inner wall of the sole mold cavity faces the first convex mold, and the outlet of the second injection molding channel is located at a position where the inner wall of the sole mold cavity faces the second convex mold; An airway opening is provided on the movable mold, an airway is fixed inside the movable mold, and the third airway is the inner cavity of the airway; the first end of the airway is a connecting port connected to the second airway, the connecting port is arranged close to the airway opening, and the second end of the airway is an air extraction hole of the third airway; A reset chamber and a stroke chamber are provided inside the movable mold core; a butt joint tube is provided inside the reset chamber, a boss portion is provided on the outer periphery of the butt joint tube, the diameter of the boss portion is larger than the inner diameter of the airway opening, two sides of the boss portion are respectively an extension portion and a sleeve portion, a reset spring is sleeved on the sleeve portion, one end of the reset spring abuts against the boss portion, the other end of the reset spring abuts against the inner wall of the reset chamber, the extension portion extends out from the airway opening or contracts into the reset chamber as the butt joint tube moves horizontally; a toggle portion is provided at one end of the sleeve portion away from the extension portion, the toggle portion is movably connected in the stroke chamber, and one end of the toggle portion extends to the outside of the movable mold core; The bottom mold includes a first bottom mold and a second bottom mold, and positioning holes are provided on the first bottom mold and the second bottom mold. Positioning pins are provided at positions of the top mold opposite to the positioning holes, and the positioning pins are connected to the positioning holes; the first bottom mold, the second bottom mold and the top mold are all provided with connecting columns.

2. The injection molding mold for a two-color shock-absorbing sole according to claim 1, characterized in that: The air pipe includes a first connecting pipe part and a second connecting pipe part, a bent pipe part is provided between the first connecting pipe part and the second connecting pipe part, a through groove is provided on the butt joint pipe, a notch is provided at the end of the sleeve part, the first connecting pipe part is located in the through groove, and the second connecting pipe part is inserted in the notch.

3. An injection molding mold for a two-color shock-absorbing sole according to any one of claims 1 to 2, characterized in that: Positioning components are provided on both sides of the movable mold core, and the positioning components include a top ball, a positioning piece, a positioning spring and a plug. The top ball and the positioning spring are both located inside the positioning piece, and the plug is connected to one end of the positioning piece. The top ball protrudes from the surface of the movable mold core; a mold core opening is provided on the top mold, and a first positioning groove and a second positioning groove are provided on the inner wall of the mold core opening, and the top ball is respectively matched with the first positioning groove and the second positioning groove.

4. An injection molding mold for a two-color shock-absorbing sole according to any one of claims 1 to 2, characterized in that: A connecting column for vertical movement of the movable mold core is provided on the top of the movable mold core.

5. An injection molding mold for a two-color shock-absorbing sole according to any one of claims 1 to 2, characterized in that: The movable mold core is formed by splicing two side mold cores.

6. An injection molding mold for a two-color shock-absorbing sole according to any one of claims 1 to 2, characterized in that: It also includes a temperature sensor and an air pressure sensor. The temperature sensor respectively collects the internal injection temperature of the first injection channel and the second injection channel, and the air pressure sensor respectively detects the internal air pressure of the first air channel and the second air channel.

7. A method for producing a two-color shock-absorbing sole, characterized in that: The injection molding die according to any one of claims 1 to 6 comprises: Obtain the sole production instruction, adjust the movable mold core to the second working position, and supply air to the first air channel and the second air channel of the top mold to clean the first air channel, the second air channel and the third air channel respectively; The first bottom mold and the second bottom mold are driven to move to the injection molding station, and the first bottom mold and the second bottom mold are spliced ​​into a complete bottom mold; the top mold is driven to descend, and the toggle part is moved to shrink the extension part into the reset cavity, and the movable mold core is driven to adjust from the second working position to the first working position, so that the first convex mold, the second convex mold and the sole mold cavity form a large sole molding cavity, and the injection molding mold is in a one-time injection molding state at this time; Suction is performed on the first air channel to extract gas in the outsole molding cavity, so that the air pressure inside the outsole molding cavity is lower than the first pressure value, and the molten first material is injected into the outsole molding cavity through the first injection channel; After the first material is injected, the shoe outsole is obtained after being cooled; the movable mold core is driven to adjust from the first working position to the second working position, and the extension part extends out of the airway opening under the action of the return spring to connect with the second airway, so that the third airway is connected with the second airway, and the side support gasket molding cavity is formed between the first punch, the second punch, the sole mold cavity and the shoe outsole, and the injection molding mold is in a secondary injection molding state at this time; Suction is performed on the second air channel to extract gas from the side support gasket molding cavity, so that the gas pressure inside the side support gasket molding cavity is lower than the second pressure value, and the molten second material is injected into the side support gasket molding cavity through the second injection channel; After the second material is injected, the two-color sole is obtained after being cooled. The top mold is driven to rise, and the first bottom mold and the second bottom mold are opened to remove the two-color sole, thus completing the sole injection molding.

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