One-time forming device for shoe sole with insert and shoe sole

Abstract

The utility model relates to a one-step forming device for a shoe sole with an insert, which is characterized in that an upper mold cavity seat and a lower mold cavity seat are firstly propped against each other during mold closing, and an additionally enlarged forming cavity is formed between the upper mold cavity seat and the lower mold cavity seat due to the work of an upper mold elastic piece and a lower mold elastic piece; compared with the prior art, the forming cavity in the state can be filled with more materials, then the upper die and the lower die set abut against each other again, the upper forming gap and the lower forming gap are covered with the upper die cavity base and the lower die cavity base, the materials in the forming cavity are extruded and formed again, the material injection gun is communicated with the forming cavity, TPU particles or steam can be injected conveniently after die assembly, and the production efficiency is improved. In other words, the injection gun can be shared by the steam pipe and can also be used in a separated mode, so that the popcorn sole with the same thickness and larger density in the unit area is manufactured, the strength of the sole in the unit area is improved, and the high-quality and high-strength sole is manufactured.

Description

Technical Field

[0001] The utility model relates to the field of molding machines, in particular to a one-time molding device for a shoe sole with an insert and the shoe sole. Background Art

[0002] TPU foam particles are microporous materials with stable structures obtained by foaming TPU raw materials by physical or chemical methods. Their diameter is generally between 5mm and 7mm. Foam materials have their own unique advantages, including: 1) excellent impact load resistance. When foam plastics are impact compressed, the internal bubbles play a role of compression rebound, consuming the impact energy, so it has better buffering and shock absorption function; 2) excellent thermal insulation performance. The bubbles inside the polymer are gas, but the heat transfer coefficient of gas is generally lower than that of polymer. At the same time, the pores can prevent air convection, so foam plastics have thermal insulation function; 3) high specific strength. The ratio of material strength to material relative density is called specific strength. The strength of foam plastics is slightly lower than that of raw materials, but the density is greatly reduced. Therefore, foam plastics usually have a large specific strength.

[0003] The process used in the existing TPU application in the production of shoe materials is the TPU foaming process. Specifically, foamed thermoplastic polyurethane TPU particles are placed in a mold, steam is sent into the mold, and the foamed thermoplastic polyurethane ETPU particles are bonded together to form a TPU foaming process. The TPU foaming process has many advantages, such as soft texture, good elasticity, good cushioning performance, low pressure energy loss, good durability, and good thermal insulation performance. With the development of the times, people are increasingly pursuing the quality and demand for shoes, especially for sports shoes. In the process of making the sole, in order to enhance the toughness, strength and other functional effects of the sole, inserts are often added to the arch, forefoot or heel of the sole (the insert can be a bottom film, a carbon film, etc., wherein the carbon film is a carbon fiber film, which is a composite material formed by bonding epoxy resin and carbon fiber silk. The carbon film has the advantages of light weight, good toughness and good strength, so that the basketball shoes or running shoes made have high elasticity and extend the service life. At the same time, the sole does not deform under large amounts of exercise, and the bottom film is set at the bottom of the popcorn sole to increase wear resistance).

[0004] The existing Chinese utility model patent with application number 2024201601669 discloses a rapid prototyping device for ETPU soles with built-in inserts. Before closing the mold, the worker first places the insert on the lower mold core, and then fixes it through a positioning and installation mechanism to prevent the movement of the insert during the molding process from affecting the molding effect. Then the upper and lower molds are combined, and the lower mold core enters the upper mold cavity to form a closed molding chamber. The TPU particles enter the molding chamber through an injection gun, and then steam is introduced for heating and molding. The molded sole is directly integrated with the insert, which solves the problem in the original technology that the carbon sheet is not firmly bonded to the upper and lower soles, and the problem of low efficiency caused by the need to be molded separately and then bonded, thereby achieving fast and efficient one-time molding.

[0005] However, the above device has the following problems in actual use:

[0006] 1. In the molding device of the sole molding machine, the concave mold is installed in the fixed mold cavity seat fixed on the frame, and the punch is installed in the movable mold cavity seat. The hydraulic drive mechanism drives the movable mold cavity seat to drive the punch to move to achieve mold closing or mold opening. After mold closing, the foaming material is injected into the mold through the material gun, and then high-temperature steam is injected into the mold through the steam pipe to expand the foaming material to fill the cavity and cause a cross-linking reaction. After molding, the steam pipe is closed and the water inlet valve is opened to inject cooling water into the mold to cool the foam and shape it. Then the water inlet valve is closed, the drainage pipe is opened, and the cooling water in the mold is discharged. Then, driven by the hydraulic drive mechanism, the movable mold cavity seat drives the punch away from the fixed mold cavity seat to open the mold and take out the finished product. Among them, since the movable mold cavity seat and the fixed mold cavity seat need to be closed during mold molding, and the foaming material is injected into the mold through the material gun after the mold closing, the amount of foaming material in the mold is limited, resulting in low strength of the finished sole after molding.

[0007] 2. The existing molding device has the problems of difficulty in demoulding after the sole is formed and low unloading efficiency.

[0008] 3. At the same time, in the preparation Figure 6 As shown in the sole, the heel part of this type of sole will be partially hollowed out, so that the inlay inside can leak out in the hollow part, and the leaked part can mark the LOGO, which is convenient for consumers to identify. This type of sole with a carbon sheet usually includes a lower sole, a carbon sheet and an upper sole. The traditional production process of a carbon sheet sole is: first, the lower sole and the upper sole are independently formed, and finally the carbon sheet is placed between the upper sole and the lower sole and bonded together. However, the production process of this type of carbon sheet sole has many steps, the process time is too long, and two sets of molds are required to respectively produce the upper sole and the lower sole, resulting in high production costs. In addition, the carbon sheet is bonded to the upper sole and the lower sole, and there is a phenomenon of loose bonding, which affects the overall strength. Summary of the invention

[0009] The technical problem to be solved by the utility model is to provide a one-time molding device for a shoe sole with an insert and a shoe sole manufactured by the molding device in view of the deficiencies of the above-mentioned prior art.

[0010] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a one-time molding device with an inlaid sole, comprising an upper mold group and a lower mold group, wherein the upper mold group comprises an upper mold body and a plurality of upper mold cores arranged in the direction of the upper mold body corresponding to the lower mold group, and an upper mold cavity seat installed on the outer side of the upper mold core, wherein the lower mold group comprises a lower mold body and a lower mold core arranged on the lower mold body corresponding to the upper mold core, and a lower mold cavity seat installed on the outer side of the lower mold core, wherein the upper mold cavity seat can be molded corresponding to the lower mold cavity seat, and is combined with the upper mold core and the lower mold core to form a molding chamber, wherein the upper mold core and / or the lower mold core are provided with a mold core corresponding to the molding chamber. An injection gun with a cavity conduction, a plurality of upper mold elastic parts are arranged between the upper mold cavity seat and the upper mold body, the upper mold elastic parts prompt the upper mold cavity seat to bulge toward the lower mold cavity seat, and a floating upper molding gap is provided between the upper mold cavity seat and the upper mold body, a plurality of lower mold elastic parts are arranged between the lower mold cavity seat and the lower mold body, the lower mold elastic parts prompt the lower mold cavity seat to bulge toward the upper mold cavity seat, and a floating lower molding gap is provided between the lower mold cavity seat and the lower mold body, and a mold cavity seat limiting structure is provided in the upper mold cavity seat and the lower mold cavity seat to prevent the upper mold cavity seat and the lower mold cavity seat from detaching from the upper mold body and the lower mold body.

[0011] By adopting the above technical solution, the upper mold elastic member and the lower mold elastic member are preferably springs, and an upper mold cavity seat that can float along the outer circumference of the upper mold core is provided, and a lower mold cavity seat that can float along the outer circumference of the lower mold core is provided, so that the upper mold elastic member and the lower mold elastic member can push the upper and lower mold cavity seats away from the upper mold and lower mold bodies, and the mold cavity seat limiting structure is used to prevent the spring from pushing the mold cavity seat away from the upper mold and lower mold bodies. In this way, when the mold is closed, the upper mold cavity seat and the lower mold cavity seat are first pressed against each other. Due to the work of the upper mold elastic member and the lower mold elastic member, an additional enlarged molding chamber is formed between the upper mold cavity seat and the lower mold cavity seat. Compared with the prior art, the molding chamber in this state can be filled with more materials. Then the upper and lower mold groups are pressed against each other again, so that the upper and lower mold cavity seats cover the upper and lower molding gaps, and the material in the molding chamber is extruded and molded again. The injection gun is connected to the molding chamber, which is convenient for injecting TPU particles or steam after the mold is closed. That is, the injection gun can be shared with the steam pipe or used separately, thereby making a popcorn sole with the same thickness but higher density per unit area, thereby improving the strength of the sole per unit area and preparing a high-quality and high-strength sole.

[0012] The above-mentioned one-time molding device with an insert sole can be further configured as follows: the mold cavity seat limiting structure includes limiting lugs arranged on the outside of the upper mold cavity seat and the lower mold cavity seat, and limiting bolts inserted into the limiting lugs to limit the upper mold cavity seat to the upper mold body and the lower mold cavity seat to the lower mold body.

[0013] By adopting the above technical scheme, a plurality of limiting lugs are arranged on both sides of the upper mold cavity seat and the lower mold cavity seat, and limiting bolts are inserted to connect the upper and lower mold bodies, wherein the length of the limiting bolts is greater than the height of the limiting lugs, so that the upper mold cavity seat and the lower mold cavity seat can be raised and lowered along the axial direction of the limiting bolts, and the limiting bolts can prevent the upper mold cavity seat and the lower mold cavity seat from being separated.

[0014] The above-mentioned one-time molding device with an insert sole can be further configured as follows: a molding boss is provided at one end of the heel portion of the lower mold core facing the upper mold core, and at least two lower positioning columns are provided on the circumferential surface of the lower mold core corresponding to the molding boss, and an insertion step is provided at the end of the lower positioning column for fixing the carbon sheet, and upper positioning columns corresponding to the lower positioning columns are provided on the upper mold core, and the height of the lower positioning columns on the side of the molding boss is in the same horizontal plane as the molding boss.

[0015] By adopting the above technical solution, a plurality of positioning holes cooperating with the lower positioning pillars are arranged on the carbon sheet. Before closing the mold, the worker first places the carbon sheet on the upper positioning pillars on the lower mold core, and inserts the positioning holes into the plug-in steps. While maintaining the positioning, the plug-in steps are used to prevent the axial movement of the carbon sheet from affecting the molding effect. At the same time, an upper positioning pillar is arranged on the upper mold core to position it again when closing the mold, clamping the carbon sheet up and down so that the carbon sheet will not move during molding. The setting of the molding boss at the same horizontal plane as the lower positioning pillar can directly abut against the surface of the molding boss when the carbon sheet is placed, so that the fixation is more stable and the molding boss is guaranteed to be close to the carbon sheet. There is no gap between the sheets. When the sole is formed, the part of the heel corresponding to the forming boss is hollowed out, so that the carbon sheet corresponding to the hollowed-out part can be marked with the LOGO, which is convenient for consumers to identify and improves the beauty of the entire sole. After the carbon sheet is fixed, the upper and lower molds are combined to form a closed molding chamber. TPU particles enter the molding chamber through an injection gun and then steam is introduced for heating and molding. The molded sole is directly integrated with the insert, which solves the problem of the original technology that the carbon sheet is not firmly bonded to the upper and lower soles, and the need to be molded separately and then bonded, resulting in low efficiency, and realizes fast and efficient one-time molding.

[0016] The above-mentioned one-step molding device for a shoe sole with an insert can be further configured as follows: the molding bosses gradually converge circumferentially from the lower mold core to the upper mold core, and form a hollow surface on the surface that is in the same horizontal plane as the lower positioning column on the side.

[0017] By adopting the above technical solution, the forming boss is set to a structure that is wide at the bottom and narrow at the top, so that after the sole is formed, its bottom has a structure that converges to the hollow part, which can share the pressure on the heel of the sole and make the sole more beautiful.

[0018] The above-mentioned one-step forming device for a shoe sole with an insert may be further configured as follows: a bottom film groove for placing a bottom film is provided on the palm of the lower mold core.

[0019] By adopting the above technical solution, by setting a film groove on the palm of the lower mold, workers can also install a film in the film groove, which increases the wear resistance of the sole and adds a LOGO to the sole part of the sole for easy identification by consumers.

[0020] The above-mentioned one-time forming device for a shoe sole with an insert can be further configured as follows: a lower mold unloading top block is provided on the inner wall of the lower mold body corresponding to the lower mold core, the forming boss is arranged at the end of the lower mold unloading top block, a plurality of lower unloading springs are arranged between the lower mold unloading top block and the lower mold body, a lower mold unloading hole for the forming boss to pass through is opened on the surface of the lower mold core, the lower unloading spring prompts the forming boss to pass through the lower mold unloading hole, and forms a lower unloading gap between the lower mold unloading top block and the lower mold body for the lower mold unloading top block to float, and the lower positioning columns are all arranged on the lower mold unloading top block, and rise and fall axially with the lower mold unloading top block.

[0021] By adopting the above technical scheme, the unloading mechanism of the lower mold body is designed, including a lower mold unloading top block, a lower unloading spring and a lower mold unloading hole. The lower mold unloading top block extends the molding boss and the lower positioning column toward the upper mold group through the lower unloading spring. When the mold is closed, as the material is injected and the material is formed and expanded after locking, the molding boss, the lower positioning column and the carbon sheet will be pressed downward until the mold is completely closed and formed. At this time, the lower mold unloading top block will squeeze the lower unloading spring to overcome the lower unloading gap and put the sole in an extreme forming state. When the sole is formed and the mold is opened, the lower unloading spring will reset and quickly push the sole out of the lower mold cavity seat, thereby realizing rapid unloading, improving demolding efficiency, reducing manual intervention, and realizing automated production.

[0022] The above-mentioned one-time forming device for a shoe sole with an insert can be further configured as follows: an upper mold unloading top block is provided on the inner wall of the upper mold body corresponding to the upper mold core, a plurality of upper unloading springs are provided between the upper mold unloading top block and the upper mold body, and an upper unloading gap is formed between the upper mold unloading top block and the upper mold body for the upper mold unloading top block to float, and the upper positioning columns are all arranged on the upper mold unloading top block and rise and fall axially with the upper mold unloading top block.

[0023] By adopting the above technical scheme, the unloading mechanism of the upper mold body is designed, including an upper mold unloading top block and an upper unloading spring. The upper mold unloading top block extends the upper positioning column toward the upper mold group through the upper unloading spring, so that it can stably cooperate with the lower positioning column to clamp and fix the carbon sheet. When the mold is closed, as the material is injected and the material is formed and expanded after locking, the displacement of the upper mold cavity seat will also cause the upper positioning column to displace, and the carbon sheet is already squeezed and fixed at this time, and the upper positioning column will also be displaced and pulled away, and the mold will be completely closed to form. When the sole is formed and the mold is opened, the upper unloading spring will reset, and the sole will be quickly pushed out of the upper mold cavity seat, so as to achieve rapid unloading, improve demolding efficiency, reduce manual intervention, and realize automated production.

[0024] The above-mentioned one-time forming device with an insert sole can be further configured as follows: the lower mold body includes a lower mold bracket, a lower mold base and a lower mold support plate, one end of the lower mold support plate is connected to the lower mold bracket, and the other end is provided with a lower mold reset plate, and the lower mold unloading top block is provided with a lower spring positioning groove for installing a lower unloading spring, one end of the lower unloading spring is arranged in the lower spring positioning groove, and the other end extends out of the lower spring positioning groove and abuts against the lower mold reset plate.

[0025] By adopting the above technical solution, a lower die reset plate is arranged at the bottom of the lower die support plate, and a plurality of lower spring positioning grooves are opened at one end of the lower die unloading top block facing the lower die reset plate, so that the lower unloading spring arranged in the lower spring positioning groove can be positioned and deformed without being offset, thereby realizing stable unloading of the lower die assembly.

[0026] The above-mentioned one-time forming device with an insert sole can be further configured as: the upper mold body includes an upper mold bracket, an upper mold base and an upper mold support plate, one end of the upper mold support plate is connected to the upper mold bracket, and the other end is provided with an upper mold reset plate, and the upper mold unloading top block is provided with an upper spring positioning groove for installing an upper unloading spring, one end of the upper unloading spring is arranged in the upper spring positioning groove, and the other end extends out of the upper spring positioning groove and abuts against the upper mold reset plate.

[0027] By adopting the above technical solution, an upper die reset plate is arranged at the bottom of the upper die support plate, and a plurality of upper spring positioning grooves are opened at one end of the upper die unloading top block facing the upper die reset plate, so that the upper unloading spring arranged in the upper spring positioning groove can be positioned and deformed without being offset, thereby realizing stable unloading of the upper die group.

[0028] Also disclosed is a sole formed by a one-time forming device with an inlaid sole: the sole surface has a bottom sheet, the sole interior has a carbon sheet, a hollow portion is provided at the middle of the heel of the sole, and the carbon sheet is partially arranged at the hollow portion.

[0029] By adopting the above technical solution, a hollow portion is set in the middle of the heel of the sole, so that part of the carbon sheet leaks out of the hollow portion, and the carbon sheet can display the LOGO in this part, which is convenient for consumers to identify.

[0030] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model.

[0032] Figure 2 It is the front view of the embodiment of the utility model.

[0033] Figure 3 for Figure 1 Exploded diagram.

[0034] Figure 4 for Figure 1 The explosion Figure 2 .

[0035] Figure 5 for Figure 1 The explosion Figure 3 .

[0036] Figure 6 It is a three-dimensional schematic diagram of the sole of an embodiment of the utility model.

[0037] Figure 7 It is a cross-sectional schematic diagram of the embodiment of the utility model when the mold is opened.

[0038] Figure 8 It is a cross-sectional schematic diagram of the embodiment of the utility model during mold closing and injection.

[0039] Fig. 9 It is a cross-sectional schematic diagram of the embodiment of the utility model during mold locking molding. Implementation

[0040] like Figure 1-Figure 9As shown, a one-time molding device with an inlaid sole comprises an upper mold group and a lower mold group, the upper mold group comprises an upper mold body 1 and two upper mold cores 2 arranged in the direction of the upper mold body 1 corresponding to the lower mold group, and an upper mold cavity seat 3 installed on the outer side of the upper mold core 2, the lower mold group comprises a lower mold body 4 and a lower mold core 5 arranged on the lower mold body 4 corresponding to the upper mold core 2, and a lower mold cavity seat 6 installed on the outer side of the lower mold core 5, the upper mold cavity seat 3 can be molded corresponding to the lower mold cavity seat 6, and is combined with the upper mold core 2 and the lower mold core 4 to form a molding cavity A, the upper mold core 2 and the lower mold core 4 are both provided with an upper mold injection gun 21 and a lower mold injection gun 51 which are connected to the molding cavity A, a plurality of upper mold springs 31 are provided between the upper mold cavity seat 3 and the upper mold body 1, the upper mold springs 31 cause the upper mold cavity seat 3 to bulge toward the lower mold cavity seat 6, and make the upper mold cavity seat 3 protrude toward the lower mold cavity seat 6, and make the upper mold cavity seat 3 protrude toward the lower mold cavity seat 6. A floating upper forming gap a is provided between the mold cavity seat 3 and the upper mold body 1, and a plurality of lower mold springs 61 are provided between the lower mold cavity seat 6 and the lower mold body 4. The lower mold springs 61 urge the lower mold cavity seat 6 to bulge toward the upper mold cavity seat 3, and provide a floating lower forming gap b between the lower mold cavity seat 6 and the lower mold body 4. Both the upper mold cavity seat 3 and the lower mold cavity seat 6 are provided with a mold cavity seat limiting structure for preventing the upper mold cavity seat 6 and the lower mold cavity seat 3 from separating from the upper mold body 1 and the lower mold body 4. The mold cavity seat limiting structure includes a limiting lug 30 arranged on the outer side of the upper mold cavity seat 3 and the lower mold cavity seat 6, and a limiting bolt 301 passed through the limiting lug 30 to limit the upper mold cavity seat 3 to the upper mold body 1 and the lower mold cavity seat 6 to the lower mold body 4, so that the upper mold cavity seat 3 and the lower mold cavity seat 6 can float axially along the limiting bolt 301.

[0041] like Figure 3-Figure 9 As shown, a molding boss 52 is provided at one end of the heel portion of the lower mold core 5 facing the upper mold core 2, and a plurality of lower positioning columns 53 are distributed around the circumference of the molding boss 52 corresponding to the lower mold core 5. An inserting step 531 for fixing the carbon sheet B is provided at the end of the lower positioning column 53. The upper mold core 2 is provided with an upper positioning column 22 corresponding to the lower positioning column 53. The height of the lower positioning column 53 on the side of the molding boss 52 is in the same horizontal plane as the molding boss 52, so that the carbon sheet B is close to the molding boss 52. After the molding, a hollow portion 91 for the carbon sheet B to leak out the LOGO can be formed at the bottom of the sole 9, and the molding boss 52 gradually converges in the circumferential direction from the lower mold core 2 to the upper mold core 5, and a hollow surface portion 521 is formed on the surface in the same horizontal plane as the lower positioning column 53 on the side. The palm of the lower mold core 5 is provided with a bottom film groove 54 for placing the bottom film C, so that the bottom film C and the sole can be directly molded as one piece during the molding process, thereby increasing wear resistance and aesthetics.

[0042] like Figure 1-Figure 9As shown, the lower die main body 4 is provided with a lower die unloading top block 7 on the inner wall corresponding to the lower die core 5, the forming boss 52 is arranged at the end of the lower die unloading top block 7, a plurality of lower unloading springs 71 are arranged between the lower die unloading top block 7 and the lower die main body 4, a lower die unloading hole 50 for the forming boss 52 to pass through is opened on the surface of the lower die core 5, the lower unloading spring 71 prompts the forming boss 52 to pass through the lower die unloading hole 50, and forms a lower unloading gap c between the lower die unloading top block 7 and the lower die main body 4 for the lower die unloading top block 7 to float, the lower positioning columns 53 are all arranged on the lower die unloading top block 7, and rise and fall axially with the lower die unloading top block 7, the upper die main body 1 corresponds to the inner wall of the upper die core 2 An upper mold unloading top block 8 is provided on the wall, and a plurality of upper unloading springs 81 are provided between the upper mold unloading top block 8 and the upper mold body 1. An upper unloading gap d is formed between the upper mold unloading top block 8 and the upper mold body 1 for the upper mold unloading top block 8 to float. The upper positioning columns 22 are all arranged on the upper mold unloading top block 8 and are axially lifted and lowered with the upper mold unloading top block 8, so that when the sole is formed, the particles collide and squeeze the lower mold unloading top block 7 and the upper mold unloading top block 8 away from the forming chamber A. When the molding is completed and the mold is opened, the lower mold unloading top block 7 and the upper mold unloading top block 8 are reset because of the lower unloading springs 71 and the upper unloading springs 81, and the formed sole 9 is pushed out of the mold to realize automatic unloading.

[0043] like Figure 1-Figure 9 As shown, the lower die body 4 includes a lower die support 41, a lower die base 42 and a lower die support plate 43, one end of the lower die support plate 43 is connected to the lower die support 41, and the other end is provided with a lower die reset plate 44, the lower die unloading top block 7 is provided with a lower spring positioning groove 72 for installing a lower unloading spring 71, one end of the lower unloading spring 61 is arranged in the lower spring positioning groove 72, and the other end extends out of the lower spring positioning groove 72 and abuts against the lower die reset plate 44, the upper die body 1 includes an upper die support 11, an upper die base 12 and an upper die support plate 13, one end of the upper die support plate 13 is connected to the upper die support 11, and the other end is provided with an upper die reset plate 14, the upper die unloading top block 8 is provided with an upper spring positioning groove 82 for installing an upper unloading spring 81, one end of the upper unloading spring 81 is arranged in the upper spring positioning groove 82, and the other end extends out of the upper spring positioning groove 82 and abuts against the upper die reset plate 14.

[0044] When the one-step molding device of the utility model molds the sole with inserts, a mold core for the left and right feet is usually arranged in a group of molding molds, such as Figure 7 As shown, at this time, the mold is in the open state. The worker first puts the film C into the film groove 54 on the lower mold core 5 from the side, and then puts the carbon sheet B into the lower positioning column 53 of the lower mold core 5, aligns the positioning hole B1 on the carbon sheet B with the plug-in step 531 of the lower positioning column 53, and inserts and engages. At this time, the carbon sheet B is placed against the molding boss 52, and then the molding cylinder drives the upper and lower molds to combine, as shown in FIG. Figure 8As shown, at this time, the mold is in the closed state, and the upper mold cavity seat 3 and the lower mold cavity seat 6 between the upper and lower mold groups slightly abut against each other to form a molding chamber A. At this time, the upper mold spring 31 and the lower mold spring 61 are set, so that the molding chamber A has an upper molding gap a and a lower molding gap b. For example, the upper molding gap and the lower molding gap are both 8mm, and there is an additional 16mm of stock in the molding chamber A. Then the upper mold injection gun 21 and the lower mold injection gun 51 pass the material into the molding chamber A, so that the molding chamber A can be filled with TPU particles. After the molding chamber A is filled, the molding cylinder pushes the upper and lower mold groups to move toward each other to complete the clamping, as shown in FIG. Fig. 9 As shown, it is in the mold locking state at this time. At this time, the upper molding gap a and the lower molding gap are filled, and the molding chamber A will also be compressed, so that the TPU particles in the same molding chamber A can be filled with more. At this time, since the molding chamber A is filled with TPU particles, the lower mold unloading top block 7 and the upper mold unloading top block 8 will also partially move backward, and the carbon sheet B and the bottom sheet C have been covered with TPU particles and will only move with the lower mold unloading top block 7. Then, steam is introduced into the upper mold injection gun 21 and the lower mold injection gun 51, and the upper and lower surfaces are heated and matured at the same time. During the collision process of the TPU particles, the lower mold unloading top block 7 and the upper mold unloading top block 8 are further squeezed. The upper mold unloading top block 8 fills the lower unloading gap c and the upper unloading gap d, thereby forming the sole 9 into a pre-set shape. After the mold is opened, the lower mold unloading top block 7 and the upper mold unloading top block 8 are reset to easily push the sole 9 out of the mold, thereby realizing rapid unloading. The bottom of the molded sole 9 has a bottom film C on the surface to improve wear resistance, and the carbon sheet B is covered inside the sole 9 to enhance the elasticity of the sole 9. At the same time, a hollow portion 91 is provided in the middle of the heel of the sole 9, and the carbon sheet B is partially arranged at the hollow portion 91, so that the LOGO on the carbon sheet B is directly leaked out without worrying about wear, thereby improving recognition.

Claims

1. A one-step molding device for a shoe sole with an insert, comprising an upper mold group and a lower mold group, wherein the upper mold group comprises an upper mold body and a plurality of upper mold cores arranged in the direction of the upper mold body corresponding to the lower mold group, and an upper mold cavity seat installed on the outer side of the upper mold core, wherein the lower mold group comprises a lower mold body and a lower mold core arranged on the lower mold body corresponding to the upper mold core, and a lower mold cavity seat installed on the outer side of the lower mold core, wherein the upper mold cavity seat can be molded corresponding to the lower mold cavity seat, and is combined with the upper mold core and the lower mold core to form a molding cavity, wherein the upper mold core and / or the lower mold core is provided with an injection gun that is in conduction with the molding cavity, and wherein the upper mold core and / or the lower mold core is provided with an injection gun that is in conduction with the molding cavity, and wherein the upper mold core and / or the lower mold core is provided with an injection gun that is in conduction with the molding cavity, and wherein the upper mold core and / or the lower mold core are ... contact with the molding cavity, and wherein the upper mold core and the lower mold core are provided with an injection gun that A plurality of upper mold elastic parts are arranged between the upper mold cavity seat and the upper mold body, and the upper mold elastic parts cause the upper mold cavity seat to bulge toward the lower mold cavity seat, and a floating upper molding gap is provided between the upper mold cavity seat and the upper mold body; a plurality of lower mold elastic parts are arranged between the lower mold cavity seat and the lower mold body, and the lower mold elastic parts cause the lower mold cavity seat to bulge toward the upper mold cavity seat, and a floating lower molding gap is provided between the lower mold cavity seat and the lower mold body; a mold cavity seat limiting structure is provided in the upper mold cavity seat and the lower mold cavity seat to prevent the upper mold cavity seat and the lower mold cavity seat from being separated from the upper mold body and the lower mold body.

2. A one-step molding device for a shoe sole with inserts according to claim 1, characterized in that: The mold cavity seat limiting structure includes limiting lugs arranged on the outer sides of the upper mold cavity seat and the lower mold cavity seat, and limiting bolts penetrated through the limiting lugs to limit the upper mold cavity seat to the upper mold body and the lower mold cavity seat to the lower mold body.

3. A one-step molding device for a shoe sole with inserts according to claim 1 or 2, characterized in that: A molding boss is provided at one end of the heel portion of the lower mold core facing the upper mold core, and at least two lower positioning columns are provided on the circumferential surface of the lower mold core corresponding to the molding boss, and plug-in steps are provided at the ends of the lower positioning columns for fixing the carbon sheets, and upper positioning columns corresponding to the lower positioning columns are provided on the upper mold core, and the height of the lower positioning columns on the side of the molding boss is in the same horizontal plane as the molding boss.

4. A one-step molding device for a shoe sole with inserts according to claim 3, characterized in that: The forming boss gradually converges in the circumferential direction from the lower die core to the upper die core, and forms a hollow surface on the surface that is in the same horizontal plane as the lower positioning column on the side.

5. A one-step molding device for a shoe sole with inserts according to claim 4, characterized in that: The palm of the lower mold core is provided with a film groove for placing the film.

6. The one-step molding device for a shoe sole with inserts according to claim 3, characterized in that: The inner wall of the lower die body corresponding to the lower die core is provided with a lower die unloading top block, the forming boss is arranged at the end of the lower die unloading top block, a plurality of lower unloading springs are arranged between the lower die unloading top block and the lower die body, a lower die unloading hole for the forming boss to pass through is opened on the surface of the lower die core, the lower unloading spring prompts the forming boss to pass through the lower die unloading hole, and forms a lower unloading gap between the lower die unloading top block and the lower die body for the lower die unloading top block to float, the lower positioning columns are all arranged on the lower die unloading top block, and rise and fall axially with the lower die unloading top block.

7. A one-step molding device for a shoe sole with inserts according to claim 6, characterized in that: An upper mold unloading top block is provided on the inner wall of the upper mold body corresponding to the upper mold core, and a plurality of upper unloading springs are provided between the upper mold unloading top block and the upper mold body. An upper unloading gap is formed between the upper mold unloading top block and the upper mold body for the upper mold unloading top block to float, and the upper positioning columns are all arranged on the upper mold unloading top block and rise and fall axially with the upper mold unloading top block.

8. The one-step molding device for a shoe sole with inserts according to claim 7, characterized in that: The lower die main body includes a lower die bracket, a lower die base and a lower die support plate, one end of the lower die support plate is connected to the lower die bracket, and the other end is provided with a lower die reset plate, a lower spring positioning groove for installing a lower unloading spring is provided in the lower die unloading top block, one end of the lower unloading spring is arranged in the lower spring positioning groove, and the other end extends out of the lower spring positioning groove and abuts against the lower die reset plate.

9. A one-step molding device for a shoe sole with inserts according to claim 8, characterized in that: The upper mold body includes an upper mold bracket, an upper mold base and an upper mold support plate, one end of the upper mold support plate is connected to the upper mold bracket, and the other end is provided with an upper mold reset plate, and an upper spring positioning groove for installing an upper unloading spring is provided in the upper mold unloading top block, one end of the upper unloading spring is arranged in the upper spring positioning groove, and the other end extends out of the upper spring positioning groove and abuts against the upper mold reset plate.

10. A sole made by the one-step molding device for a sole with inserts according to claim 3, characterized in that: The surface of the sole is provided with a bottom sheet, the interior of the sole is provided with a carbon sheet, a hollow portion is provided at the middle of the heel of the sole, and the carbon sheet is partially arranged at the hollow portion.

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