High-strength sole forming device for sole forming machine

Abstract

The utility model relates to a high-strength shoe sole forming device for a shoe sole forming machine, which comprises a rack, a fixed mold frame and a movable mold frame which are correspondingly arranged on the rack, and a driving mechanism for controlling the movable mold frame to be close to or far away from the fixed mold frame, upper molds in one-to-one correspondence with the lower molds are installed in the movable mold frame, after the fixed mold frame and the movable mold frame are closed, the fixed mold frame and the movable mold frame are matched to form a closed skinning steam chamber, and the upper molds and the lower molds are arranged in the skinning steam chamber and abut against each other to form a forming cavity used for forming a shoe sole. And a skinning steam main pipe for introducing steam into the skinning steam chamber is arranged on one side of the fixed mold frame and / or the movable mold frame. Compared with the prior art, the whole skinning process only needs to install the molds in the corresponding fixed mold frame and the movable mold frame, and the molds do not need to be processed externally, so that the processing difficulty and the processing cost are reduced, quick and convenient multi-group skinning is realized, and the skinning efficiency is improved. And the processing efficiency is obviously improved.

Description

Technical Field

[0001] The utility model relates to the field of molding machines, in particular to a high-strength sole molding device for a sole molding machine. 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. The hot melt skinning mechanism in the existing design includes a hot melt pipeline arranged in a surrounding manner in the middle frame of the upper mold. The hot melt pipeline is respectively provided with an access pipe and an outflow pipe at both ends corresponding to the upper mold cavity. The hot melt pipeline allows the heat-conducting medium to enter through the access pipe and then flow out from the outflow pipe, thereby heating the inner wall of the molding chamber. It is necessary to open a hot melt pipeline in each mold for skinning, which makes mold processing difficult and costly.

[0007] 2. 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.

[0008] 3. The existing molding device has the problems of difficulty in demoulding after the sole is formed and low unloading efficiency. Summary of the invention

[0009] The technical problem to be solved by the utility model is to provide a high-strength sole forming device for a sole forming machine 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 high-strength sole forming device for a sole forming machine, comprising a frame, a fixed mold frame and a movable mold frame correspondingly arranged on the frame, and a driving mechanism for controlling the movable mold frame to approach or move away from the fixed mold frame, a plurality of lower molds are installed in the fixed mold frame, and an upper mold corresponding to the lower mold is installed in the movable mold frame. When the fixed mold frame and the movable mold frame are molded together, the fixed mold frame and the movable mold frame cooperate to form a closed crusting steam chamber, the upper mold and the lower mold are arranged in the crusting steam chamber, and abut against each other to form a molding chamber for molding the sole, and a crusting steam main pipe is provided on one side of the fixed mold frame and / or the movable mold frame for supplying steam to the crusting steam chamber.

[0011] The above technical solution is adopted, and the driving mechanism is a hydraulic rod. The upper mold and the lower mold are respectively fixedly installed on the movable mold frame and the fixed mold frame, so that the driving mechanism drives the movable mold frame to close the mold with the upper and lower molds at both ends of the axial direction to form a closed crusting steam chamber, and the steam is introduced into the crusting steam chamber through the crusting steam main pipe, so that the outer peripheral surface of each group of molding chambers will be covered with steam, and then the surface of the soles formed in the mold are crusted in batches. The crusting steam chamber is not connected to the molding chamber, and only acts on the outer wall of each group of molding chambers. When the entire crusting steam chamber is crusting, the surface of the sole still has uneven textures formed by the pressing of various TPU particles. Subsequently, the outer wall of the molding chamber is heated by the crusting steam chamber, and the temperature The temperature must be greater than the steam molding temperature in the internal molding chamber so that the surface of the TPU particles on the surface of the sole in the corresponding area can be hot-melted. Under the pressure after the molding cavity is formed, the hot-melt TPU skin will quickly fill up all the gaps formed before and eliminate the gaps between the TPU particles on each surface. After cooling and shaping, a TPU sole with tight internal adhesion but a smooth outer surface can be obtained. The obtained TPU sole has a basically smooth and seamless surface, and its anti-fouling performance and appearance performance are greatly improved. Compared with the prior art, the entire skinning process only requires the mold to be installed in the corresponding fixed mold frame and movable mold frame, without external mold processing, which reduces the processing difficulty and cost, realizes fast and convenient multi-group skinning, and significantly improves the processing efficiency.

[0012] The above-mentioned high-strength sole forming device for a sole forming machine can be further configured as follows: the fixed mold frame or the movable mold frame is provided with a plurality of crusting steam branch pipes connected to the crusting steam main pipe at the corresponding lower mold or upper mold, the crusting steam branch pipes are distributed around the lower mold or the upper mold, and a plurality of crusting steam nozzles are provided at one end of the crusting steam branch pipe corresponding to the lower mold or the upper mold.

[0013] By adopting the above technical scheme, a plurality of crusting steam branch pipes are arranged around the lower mold or the upper mold, so that the crusting steam main pipe can directly surround the outer surface of each group of molds with steam through the crusting steam nozzles on the crusting steam branch pipes, directly heating the surface, quickly and evenly heating the crust, and improving the crusting effect.

[0014] The above-mentioned high-strength sole forming device for a sole forming machine can be further configured as follows: the upper mold includes an upper mold body installed in a movable mold frame, a plurality of upper mold cores arranged in the upper mold body corresponding to the direction of the lower mold, and an upper mold cavity seat installed on the outer side of the upper mold core; the lower mold includes a lower mold body installed in a fixed mold frame, 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; the upper mold cavity seat can be molded corresponding to the lower mold cavity seat, and combined with the upper mold core and the lower mold core to form the molding cavity; the upper mold core and the lower mold core are both provided with a mold corresponding to the molding cavity. The injection gun is connected to the chamber, and 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 detaching from the upper mold body and the lower mold body.

[0015] By adopting the above technical scheme, 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 molds are closed, the upper mold cavity seat and the lower mold cavity seat are first pressed against each other, and due to the work of the upper mold elastic member and the lower mold elastic member, an additional increased component is formed between the upper mold cavity seat and the lower mold cavity seat. The molding cavity can be filled with more materials than the molding cavity in the prior art. Then the upper mold and the lower mold are offset again so that the upper and lower mold cavity seats cover the upper and lower molding gaps, so that the material in the molding cavity is extruded and molded again. The injection guns arranged on both sides of the upper and lower molds are connected to the molding cavity, which is convenient for injecting TPU particles or steam after mold closing. 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.

[0016] The above-mentioned high-strength sole forming device for a sole forming machine 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 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.

[0017] 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.

[0018] The above-mentioned high-strength sole forming device for a sole forming machine 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 molding 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 is opened on the surface of the lower mold core for the lower mold unloading top block to pass through, the lower unloading spring prompts the lower mold unloading top block 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.

[0019] 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 is extended toward the upper mold 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 lower mold unloading top block will be pressed and moved downward until the mold is completely closed to form. 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.

[0020] The above-mentioned high-strength sole forming device for a sole forming machine 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, a plurality of upper mold unloading rods are provided at one end of the upper mold unloading top block facing the lower mold body, the upper mold unloading rods pass through the upper mold core, and rise and fall axially with the upper mold unloading top block.

[0021] By adopting the above technical scheme, the unloading mechanism of the upper mold body is designed, including an upper mold unloading ejector block and an upper unloading spring. The upper mold unloading ejector block extends the upper mold ejector rod toward the upper mold through the upper unloading spring. 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 mold ejector rod to displace. When the sole is formed and the mold is opened, the upper unloading spring will push the upper mold ejector rod to reset and quickly push the sole out of the upper mold cavity seat, thereby realizing rapid unloading, improving demolding efficiency, reducing manual intervention, and realizing automated production.

[0022] The above-mentioned high-strength sole forming device for a sole forming machine 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.

[0023] 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 lower die unloading.

[0024] The above-mentioned high-strength sole forming device for a sole forming machine 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.

[0025] By adopting the above technical scheme, an upper mold reset plate is arranged at the bottom of the upper mold support plate, and a plurality of upper spring positioning grooves are opened at one end of the upper mold unloading top block facing the upper mold 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 upper mold unloading.

[0026] The above-mentioned high-strength sole forming device for a sole forming machine can be further configured as follows: a positioning boss is provided at the end of the lower mold unloading top block, at least two lower positioning columns are provided on the circumference of the lower mold unloading top block corresponding to the positioning boss, and an insertion step is provided at the end of the lower positioning column for fixing the carbon sheet, and the upper mold unloading top block drives the positioning boss and the lower positioning column to rise and fall along the axial direction of the lower mold core.

[0027] By adopting the above technical solution, the setting of the positioning boss is convenient for supporting the carbon sheet over a large area, and can also be used as the lower ejector block in the lower mold. After the mold is closed, as the material is injected and the material is formed and expanded after the mold is locked, the positioning 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 ejector 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 to achieve rapid unloading, improve demoulding efficiency, reduce manual intervention, and realize automated production. A plurality of positioning holes that cooperate with the lower positioning column are set on the carbon sheet. Before closing the mold, the worker first places the carbon sheet The upper positioning column is placed on the lower mold core, and the positioning hole is inserted into the plug-in step. While maintaining the positioning, the plug-in step is used to prevent the axial movement of the carbon sheet from affecting the molding effect. At the same time, the upper positioning column is set on the upper mold core to position again when the mold is closed, and the carbon sheet is clamped up and down to prevent the carbon sheet from moving during molding. After the carbon sheet is fixed, the upper and lower molds are closed 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 that the carbon sheet is not firmly bonded to the upper and lower soles in the original technology, and the efficiency is low due to the need to be bonded after molding, thereby realizing fast and efficient one-time molding.

[0028] The above-mentioned high-strength sole forming device for a sole forming machine can be further configured as follows: the upper mold ejecting rods on the upper mold unloading ejecting block are all arranged corresponding to the lower positioning columns, and the upper mold unloading ejecting block drives the upper mold ejecting rods to rise and fall along the axial direction of the lower mold core.

[0029] By adopting the above technical scheme, the unloading mechanism of the upper mold body is designed, including an upper mold unloading ejector block and an upper unloading spring. The upper mold unloading ejector block extends the upper mold ejector rod toward the upper mold 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 be displaced after the displacement, and the carbon sheet is already squeezed and fixed at this time, and the upper mold ejector rod will also be displaced and pulled away, and the mold will be completely closed and formed. When the sole is formed and the mold is opened, the upper unloading spring will be reset to quickly push the sole out of the upper mold cavity seat, so as to achieve rapid unloading, improve demolding efficiency, reduce manual intervention, and realize automated production.

[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 a cross-sectional view of the embodiment of the utility model when the mold is closed.

[0033] Figure 3 It is a three-dimensional schematic diagram of the movable mold frame according to an embodiment of the utility model.

[0034] Figure 4 It is a three-dimensional schematic diagram of the fixed mold frame according to an embodiment of the utility model.

[0035] Figure 5 It is a three-dimensional schematic diagram of the upper mold and the lower mold according to an embodiment of the utility model.

[0036] Figure 6 for Figure 5 Exploded diagram.

[0037] Figure 7 for Figure 5 The explosion Figure 2 .

[0038] Figure 8 It is a cross-sectional schematic diagram of the upper and lower molds of the embodiment of the utility model when the molds are opened.

[0039] Fig. 9 It is a cross-sectional schematic diagram of the upper and lower molds of the embodiment of the utility model when the mold is closed and the material is injected.

[0040] Fig.10 It is a cross-sectional schematic diagram of the upper and lower molds of the embodiment of the utility model during mold locking and molding. Implementation

[0041] like Figure 1-Figure 4 As shown, a high-strength sole molding device for a sole molding machine includes a frame 9, a fixed mold frame 91 and a movable mold frame 92 correspondingly arranged on the frame 9, and a hydraulic cylinder 93 for controlling the movable mold frame 92 to approach or move away from the fixed mold frame 91. A plurality of lower molds 20 are installed in the fixed mold frame 91, and upper molds 10 corresponding to the lower molds 20 are installed in the movable mold frame 92. When the fixed mold frame 91 and the movable mold frame 92 are molded, the fixed mold frame 91 and the movable mold frame 92 cooperate to form a closed crust steam chamber 94, and the upper mold The mold 10 and the lower mold 20 are arranged in a crusting steam chamber 94, and are abutted against each other to form a molding chamber A for molding the sole. A crusting steam main pipe 95 is provided on one side of the movable mold frame 92 for supplying steam to the crusting steam chamber 94. A plurality of crusting steam branch pipes 96 connected to the crusting steam main pipe 95 are provided at the movable mold frame 92 corresponding to the upper mold 10. The crusting steam branch pipes 96 are distributed around the upper mold 10, and a plurality of crusting steam nozzles 961 are provided at one end of the crusting steam branch pipe 96 corresponding to the upper mold 10.

[0042] like Figure 1-Figure 10As shown, the upper mold 10 includes an upper mold body 1 installed in a movable mold frame 92, a plurality of upper mold cores 2 arranged in the direction of the upper mold body 1 corresponding to the lower mold 20, and an upper mold cavity seat 3 installed on the outer side of the upper mold core 2. The lower mold 20 includes a lower mold body 4 installed in a fixed mold frame 91, 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 5 to form a molding cavity A. The upper mold core 2 and the lower mold core 5 are both provided with injection guns 21 and 51 that 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 There is a floating upper forming gap a between the seat 3 and the upper die body 1, and a plurality of lower die springs 61 are arranged between the lower die cavity seat 6 and the lower die body 4. The lower die springs 61 urge the lower die cavity seat 6 to bulge toward the upper die cavity seat 3, and make a floating lower forming gap b between the lower die cavity seat 6 and the lower die body 4. Both the upper die cavity seat 3 and the lower die cavity seat 6 are provided with a die cavity seat limiting structure to prevent the upper die cavity seat 3 and the lower die cavity seat 6 from separating from the upper die body 1 and the lower die body 4. The die cavity seat limiting structure includes a limiting lug 30 arranged on the outer side of the upper die cavity seat 3 and the lower die cavity seat 6, and a limiting bolt 301 passed through the limiting lug 30 to limit the upper die cavity seat 3 to the upper die body 1 and the lower die cavity seat 6 to the lower die body 4, so that the upper die cavity seat 3 and the lower die cavity seat 6 can float axially along the limiting bolt 301.

[0043] like Figure 5-Figure 10 As 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 lower die unloading top block 7 to pass through is opened on the surface of the lower die core 5, the lower unloading spring 71 prompts the lower die unloading top block 7 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 upper die main body 1 is provided with an upper die unloading top block 8 on the inner wall corresponding to the upper die core 2, and a lower unloading spring 71 is arranged between the upper die unloading top block 8 and the upper die main body 1 A plurality of upper unloading springs 81 are provided, and 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. A plurality of upper mold unloading rods 22 are provided on one end of the upper mold unloading top block 8 facing the lower mold body 4. The upper mold unloading rods 22 pass through the upper mold core 2 and rise and fall axially 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 forming 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.

[0044] like Figure 5-Figure 7 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 71 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, and the upper die unloading top block 8 is provided with an upper spring for installing an upper unloading spring 81 Positioning groove 82, 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 mold reset plate 14, the end of the lower mold unloading top block 7 is provided with a positioning boss 52, and the circumferential surface of the lower mold unloading top block 7 corresponding to the positioning boss 52 is provided with at least two lower positioning columns 53, and the end of the lower positioning column 53 is provided with a plug-in step 531 for fixing the positioning hole B1 of the carbon sheet B. The upper mold unloading top block 8 drives the positioning boss 52 and the lower positioning column 53 to rise and fall axially along the lower mold core 5, and the upper mold ejecting rod 22 on the upper mold unloading top block 8 is arranged corresponding to the lower positioning column 53, and the upper mold unloading top block 8 drives the upper mold ejecting rod 22 to rise and fall axially along the lower mold core 5.

[0045] When the high-strength sole molding device of the utility model is used to mold the sole, a mold core for the left and right feet is usually arranged in a group of molding molds, such as Figure 8 As shown, at this time, the mold is in the open state. The worker first puts the carbon sheet B on the lower positioning column 53 of the lower mold core 5 from the side, 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 positioning boss 52, and then the hydraulic cylinder 93 drives the fixed mold frame 91 and the movable mold frame 92 to close the mold, and drives the fixed mold frame 91 to close the upper mold 10 and the lower mold 20 in the movable mold frame 92. Fig. 9 As shown, at this time, the mold is in the closed state, and the fixed mold frame 91 and the movable mold frame 92 still have a little gap. The upper mold cavity seat 3 and the lower mold cavity seat 6 between the upper mold 10 and the lower mold 20 slightly abut against each other to form a molding chamber A. At this time, the setting of the upper mold spring 31 and the lower mold spring 61 makes the molding chamber A have 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 hydraulic cylinder 93 pushes the upper mold 10 and the lower mold 20 to move toward each other to complete the clamping, as shown in FIG. Figure 2 , Fig.10As shown, at this time, it is in the locked state, the fixed mold frame 91 and the movable mold frame 92 are completely closed, and a closed crust steam chamber 94 is formed. At this time, the upper molding gap a and the lower molding gap b between the corresponding upper mold 10 and the lower mold 20 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 full of 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 has been covered and coated with TPU particles, and will only move with the lower mold unloading top block 7. Then, the upper mold injection gun 21 and the lower mold injection gun 51 are introduced with 110°-140° steam, 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, so that the lower unloading gap c and the upper unloading gap d are filled, and then the sole 9 is formed into a pre-set shape. At this time, the molding cavity The sole surface of chamber A also has uneven textures. 150°-180° steam is diverted to the crusting steam branch pipe 96 through the crusting steam main pipe 95, and then the crusting steam nozzle 961 on the crusting steam branch pipe 96 covers the steam on the entire periphery of the molding chamber A. The outer surface of the sole begins to enter a state between a viscous flow state and a molten state due to the temperature rise. Under the action of pressure, the outer surface of the sole inside the molding chamber A begins to flatten. Only the surface of the TPU particles undergoes hot melting at a higher temperature, and the bubbles inside the TPU particles will not collapse due to the hot melting of the inner wall of the bubbles, so as to obtain a TPU sole with tight internal adhesion but a smooth outer surface. Then, the heating is stopped, and cooling water is introduced to cool and shape the inside of the shoe material midsole product in the mold. Then, 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 achieving rapid unloading and a complete set of sole processing procedures.

Claims

1. A high-strength sole molding device for a sole molding machine, comprising a frame, a fixed mold frame and a movable mold frame correspondingly arranged on the frame, and a driving mechanism for controlling the movable mold frame to approach or move away from the fixed mold frame, wherein a plurality of lower molds are installed in the fixed mold frame, and an upper mold corresponding to the lower molds is installed in the movable mold frame, characterized in that: When the fixed mold frame and the movable mold frame are molded together, the fixed mold frame and the movable mold frame cooperate to form a closed crusting steam chamber, the upper mold and the lower mold are arranged in the crusting steam chamber, and abut against each other to form a molding chamber for molding the sole, and a crusting steam main pipe is provided on one side of the fixed mold frame and / or the movable mold frame for supplying steam to the crusting steam chamber.

2. A high-strength sole forming device for a sole forming machine according to claim 1, characterized in that: The fixed mold frame or the movable mold frame is provided with a plurality of crusting steam branch pipes connected with the crusting steam main pipe at the position corresponding to the lower mold or the upper mold. The crusting steam branch pipes are distributed around the lower mold or the upper mold, and a plurality of crusting steam nozzles are provided at one end of the crusting steam branch pipe corresponding to the lower mold or the upper mold.

3. The high-strength sole forming device for a sole forming machine according to claim 1, characterized in that: The upper mold includes an upper mold body installed in the movable mold frame, a plurality of upper mold cores arranged in the direction of the upper mold body corresponding to the lower mold, and an upper mold cavity seat installed on the outer side of the upper mold core. The lower mold includes a lower mold body installed in the fixed mold frame, 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. The upper mold cavity seat can correspond to the lower mold cavity seat for mold closing, and is combined with the upper mold core and the lower mold core to form the molding cavity. The upper mold core and the lower mold core are both provided with injection guns that are connected to the molding cavity. The upper mold cavity seat A plurality of upper mold elastic parts are arranged between the upper mold body, and the upper mold elastic parts cause the upper mold cavity seat to protrude 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 protrude 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 separating from the upper mold body and the lower mold body.

4. The high-strength sole forming device for a sole forming machine according to claim 3, 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.

5. A high-strength sole forming device for a sole forming machine according to claim 4, characterized in that: A lower die unloading top block is provided on the inner wall of the lower die main body corresponding to the lower die core, 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 main body, a lower die unloading hole for the lower die unloading top block to pass through is opened on the surface of the lower die core, the lower unloading spring prompts the lower die unloading top block 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 main body for the lower die unloading top block to float.

6. A high-strength sole forming device for a sole forming machine according to claim 5, characterized in that: An upper mold unloading 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 block and the upper mold body, an upper unloading gap is formed between the upper mold unloading block and the upper mold body for the upper mold unloading block to float, a plurality of upper mold unloading rods are provided at one end of the upper mold unloading block facing the lower mold body, the upper mold unloading rods pass through the upper mold core, and rise and fall axially with the upper mold unloading block.

7. A high-strength sole forming device for a sole forming machine according to claim 6, 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.

8. The high-strength sole forming device for a sole forming machine according to claim 7, 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.

9. A high-strength sole forming device for a sole forming machine according to claim 8, characterized in that: A positioning boss is provided at the end of the lower mold unloading top block, and at least two lower positioning columns are provided on the circumference of the lower mold unloading top block corresponding to the positioning boss. An insertion step for fixing the carbon sheet is provided at the end of the lower positioning column. The upper mold unloading top block drives the positioning boss and the lower positioning column to rise and fall along the axial direction of the lower mold core.

10. The high-strength sole forming device for a sole forming machine according to claim 9, characterized in that: The upper mold ejecting rods on the upper mold unloading ejecting block are all arranged corresponding to the lower positioning columns, and the upper mold unloading ejecting block drives the upper mold ejecting rods to rise and fall along the axial direction of the lower mold core.

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