CN116749422B - Environment-friendly sole foaming forming device and foaming forming method - Google Patents

Abstract

The present invention discloses an environmentally friendly sole foaming molding device and a foaming molding method, which are provided with a support frame, a cylinder is installed on the lower end surface of the support frame, and a lower mold is installed below the upper mold; it includes: a motor, which is installed on the side of the support frame by bolts, and the output shaft of the motor is connected to a screw rod, and the side of the sleeve block and one end of the movable tube are fixedly connected; the side of the movable tube is connected to the side of the storage box by a feeding hose; the end of the screw rod is connected to the transmission shaft by a pulley mechanism. The environmentally friendly sole foaming molding device and the foaming molding method can realize the molding of multiple molding cavities at the same time by moving the automatic injection method, and the driving force can be used to vibrate out the large bubbles in the raw material on the one hand, and transmit the vibration force to the lower mold on the other hand, so that the raw material is distributed more evenly in the molding cavity, thereby ensuring the integrity of the subsequent products.

Description

Environmentally friendly sole foaming molding device and foaming molding method

Technical Field

The invention relates to the technical field of sole processing, in particular to an environmentally friendly sole foaming molding device and a foaming molding method.

Background Art

Foaming is the process of melting plastic particles by heating, and then squeezing the raw materials through the merging of molds, so that the product has a honeycomb or porous structure. Some soles are processed by foaming. For example, an EVA sole disposable foaming molding device with a publication number of CN216230411U, when the sole is foamed during use, the upper shoe mold is opened first and then the cylinder is started, so that the telescopic rod extends from the cylinder to move the movable column downward, and the movable column moves downward to move the fixed plate and the cutter downward at the same time until they contact the foamed sole. The spring forces the fixed plate downward and extrude and cut the foamed sole scraps through the cutter, so that the sole is directly cut after foaming, which greatly increases work efficiency and avoids the trouble of workers' secondary cutting processing. However, the EVA sole disposable foaming molding device still has the following disadvantages during actual use:

1. Although the above-mentioned foaming molding device can realize the processing of the sole, it is mostly necessary to manually place the granular raw materials into the molding cavity before operation. Not only can the amount of the raw materials not be controlled, but also the melting speed of the granular raw materials will be different, thereby affecting the integrity of the subsequent products;

2. In addition, large bubbles are likely to exist in the raw materials during the transmission process, so there is a lack of a mechanism to vibrate the bubbles out, which affects the product quality. In addition, there is an uneven distribution of the raw materials in the molding cavity, resulting in a large difference in the thickness of the soles after molding.

In view of the above problems, it is urgent to carry out innovative design based on the original foaming molding device.

Summary of the invention

The purpose of the present invention is to provide an environmentally friendly sole foaming molding device and a foaming molding method to solve the problems proposed in the above-mentioned background technology that the amount of input cannot be controlled, the melting speed of the granular raw materials is different, there is a lack of a mechanism to vibrate out the bubbles, which affects the product quality, and there is an uneven distribution of the raw materials in the molding cavity.

To achieve the above object, the present invention provides the following technical solutions: an environmentally friendly sole foaming molding device, provided with a support frame, a cylinder is installed on the lower end surface of the support frame, and an upper mold is connected to the output shaft of the cylinder, a lower mold is installed below the upper mold, and the lower mold is arranged on the inner side of the support frame, and a molding cavity is opened on the upper end surface of the lower mold;

The invention comprises: a motor, which is installed on the side of the support frame by bolts, the output shaft of the motor is connected with a screw rod, and the outer thread sleeve of the screw rod is provided with a sleeve block, the side of the sleeve block is fixedly connected with one end of the movable tube, and the other end of the movable tube is provided with an injection nozzle, and the injection nozzle is located directly above the molding cavity;

The side surface of the movable pipe is connected to the side surface of the material storage box through a material delivery hose, and the material storage box is fixed to the upper end surface of the support frame;

The ends of the screw rod are connected to each other through a pulley mechanism and a transmission shaft, and the transmission shaft is meshed and driven by a bevel gear set and a movable shaft. The movable shaft bearing runs through the top of the storage box, and a stirring rod for stirring the material is fixed on the side of the movable shaft.

Preferably, the movable tube forms a relatively movable structure with respect to the upper mold and the lower mold, and the movable length of the movable tube is greater than the length of the upper mold and the lower mold, and a connecting rod is fixed between the two movable tubes. The movable tube is convenient for injecting raw materials into different molding cavities by moving between the molds, and does not affect the merging of the molds when moving to the outermost edge.

Preferably, a movable cylinder is slidably provided at the bottom of the connecting rod, and a spring is provided between the connecting rod and the movable cylinder, and the connecting rod is a "T" shaped structure. At the same time, a through groove is provided on the lower mold on the outside of the movable cylinder, so that when the movable cylinder vibrates, it can slide on the connecting rod, which will not affect the movement of the movable tube for unloading.

Preferably, the movable cylinder forms a sliding structure through a through groove and a lower mold, and a connecting strip is vertically fixed to the bottom of the movable cylinder, and guide blocks are symmetrically arranged at both ends of the connecting strip. At the same time, the guide blocks are serrated. When the movable cylinder moves, the guide blocks can be driven to move synchronously through the connecting strip, and can contact the movable blocks during the movement.

Preferably, a movable block is provided on the lower end surface of the lower mold above the guide block, and the movable blocks are distributed at equal intervals, and the movable block and the lower mold are hinged, and the movable block is tilted. When the guide block moves to the right, it can contact the movable block and generate vibration, and when the guide block moves to the left, it can push the movable block to rotate.

Preferably, the upper inclined surface of the movable block is connected to the lower mold through a spring, and a limiting strip is fixed at the edge of the lower inclined surface of the movable block, and the upper end surface of the limiting strip is in close contact with the lower end surface of the lower mold. At the same time, the movable block can only rotate clockwise in its initial state. Due to the limitation of the limiting strip, the movable block cannot rotate when the guide block moves to the right.

Preferably, the lower edge of the movable block is fitted and connected to the bottom of the support rod, and a base plate is fixed to the top of the support rod, and the base plate is fitted on the inner bottom surface of the molding cavity. At the same time, the support rod and the lower mold are slidably connected. When the movable block rotates, it can push the support rod to slide on the lower mold, thereby pushing the base plate to move upward.

Preferably, the storage box is interconnected through a material delivery hose and a movable tube, and a guide box is fixed inside the storage box, and the cross-section of the guide box is an inverted "V"-shaped structure. The setting of the guide box can guide the discharge of materials.

Preferably, the bottom fixed sleeve of the movable shaft is provided with a cam, and an inclined metal sheet is fixed on the guide box on the side of the cam, and the cam can contact the metal sheet after rotation. The movable shaft can drive the cam to rotate, and after rotation, it can contact the metal sheet, thereby generating vibration to vibrate out the bubbles.

A foaming method for an environment-friendly sole foaming device, the foaming method comprising the following steps:

S1: First, pour the raw materials into the storage box and heat and melt them. Then, the motor drives the screw to rotate to move the movable tube so as to inject materials into the molding cavities at different positions. Then, the upper mold is driven down by the cylinder and can be merged with the lower mold to form the foam of the product.

S2: Secondly, when the movable tube moves to inject material, vibration can be generated through the contact between the guide block and the movable block, so that the raw material is distributed more evenly in the molding cavity, and the cam is rotated and contacted with the metal sheet by the transmission of the pulley mechanism and the bevel gear set, so that the large bubbles in the storage box can be vibrated out by the vibration generated;

S3: Finally, after the sole is formed, the limit strip and the guide block move in the opposite direction, which can push the movable block to rotate, and then the bottom plate can be pushed up through the support rod to separate the product from the forming cavity.

Compared with the prior art, the beneficial effects of the present invention are as follows: the environmentally friendly sole foaming molding device and foaming molding method can realize the molding of multiple molding cavities at the same time by moving the automatic injection method, and utilize the driving force to vibrate out the large bubbles in the raw material on the one hand, and transmit the vibration force to the lower mold on the other hand, so that the raw material is distributed more evenly in the molding cavity, thereby ensuring the integrity of the subsequent products. The specific contents are as follows:

1. Through the threaded transmission between the screw and the sleeve, the movable tube can be driven to move and inject material into the molding cavity. When the screw rotates, the movable shaft and the cam can be driven to rotate through the meshing transmission of the pulley mechanism and the bevel gear set. On the one hand, the raw materials can be stirred to ensure the uniformity of melting. On the other hand, the contact between the cam and the metal sheet can generate vibration, so that the connection position between the feeding hose and the storage box can be vibrated to vibrate out the large bubbles in the raw materials to avoid affecting the injection amount of the raw materials.

2. When the movable tube moves to inject material, it can drive the guide block to contact with the movable block. The limit bar prevents the movable block from rotating, and then generates vibration through contact. The vibration position moves with the injection position, which can make the raw material more evenly distributed in the molding cavity and ensure the quality of the sole after molding.

3. After the subsequent product is formed, the guide block can still contact the movable block when it moves in the reverse direction, and the movable block can be pushed to rotate without being restricted by the limiting strip, and then pushed to slide on the lower mold through contact with the support rod, thereby pushing the bottom plate to move upward, which can accelerate the separation of the product from the molding cavity and accelerate demoulding.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front view of the structure of the present invention;

FIG2 is a schematic diagram of a side cross-sectional structure of a lower mold of the present invention;

FIG3 is a schematic diagram of a side cross-sectional structure of a material storage box according to the present invention;

FIG4 is a schematic diagram of the back structure of the present invention;

FIG5 is a schematic diagram of the structure of the upper mold of the present invention when viewed from bottom;

FIG6 is a bottom view of the structure of the lower mold of the present invention;

FIG7 is a schematic diagram of the side structure of the support rod of the present invention;

FIG8 is a schematic diagram of the front view structure of the movable block of the present invention.

In the figure: 1. support frame; 2. cylinder; 3. upper mold; 4. lower mold; 5. molding cavity; 6. bottom plate; 7. support rod; 8. motor; 9. screw; 10. sleeve block; 11. movable tube; 12. injection nozzle; 13. connecting rod; 14. movable cylinder; 15. through groove; 16. connecting strip; 17. guide block; 18. movable block; 19. limit strip; 20. feed hose; 21. storage box; 22. transmission shaft; 23. bevel gear set; 24. movable shaft; 25. stirring rod; 26. cam; 27. guide box; 28. metal sheet.

Implementation

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

Please refer to Figures 1 to 8. The present invention provides a technical solution: an environmentally friendly sole foaming molding device, which is provided with a support frame 1, a cylinder 2 is installed on the lower end surface of the support frame 1, and the output shaft of the cylinder 2 is connected to an upper mold 3, a lower mold 4 is installed below the upper mold 3, and the lower mold 4 is arranged on the inner side of the support frame 1, and a molding cavity 5 is opened on the upper end surface of the lower mold 4; including: a motor 8, which is installed on the side of the support frame 1 by bolts, the output shaft of the motor 8 is connected to a screw rod 9, and the outer side of the screw rod 9 is provided with a sleeve block 10, and the side and movable sleeve block 10 are provided. One end of the tube 11 is fixedly connected, and the other end of the movable tube 11 is equipped with an injection nozzle 12, and the injection nozzle 12 is located directly above the molding cavity 5; the side of the movable tube 11 is interconnected through the side of the feeding hose 20 and the storage box 21, and the storage box 21 is fixed to the upper end surface of the support frame 1; the ends of the screw rod 9 are interconnected with the transmission shaft 22 through a pulley mechanism, and the transmission shaft 22 is meshed with the movable shaft 24 through a bevel gear set 23, and the bearing of the movable shaft 24 passes through the top of the storage box 21, and the side of the movable shaft 24 is fixed with a stirring rod 25 for stirring the material.

As shown in Fig. 4-Fig. 5, the movable tube 11 forms a relatively movable structure with respect to the upper mold 3 and the lower mold 4, and the movable tube 11 has a movable length greater than the length of the upper mold 3 and the lower mold 4, and a connecting rod 13 is fixed between the two movable tubes 11, and the raw materials in the storage box 21 can be transferred to the movable tube 11 through the feeding hose 20, and then can be discharged from the injection nozzle 12, and then when the motor 8 drives the screw rod 9 to rotate, it can be driven by the threaded transmission between the sleeve block 10, thereby driving the movable tube 11 to move back and forth between the upper mold 3 and the lower mold 4, and when it moves to the top of the molding cavity 5 at different positions, the raw materials can be injected into the molding cavity 5 through the injection nozzle 12 for subsequent molding, and the movable tube 11 can pull the feeding hose 20 to extend when moving, so as not to affect the transmission of the raw materials, and after the injection, the movable tube 11 moves to the edge of the support frame 1, and then the upper mold 3 is driven to descend by the cylinder 2 to merge with the lower mold 4, so as to realize the molding of the sole;

As shown in Figures 2, 6 and 8, a movable cylinder 14 is slidably provided at the bottom of the connecting rod 13, and a spring is provided between the connecting rod 13 and the movable cylinder 14, and the connecting rod 13 is a "T"-shaped structure, and a through groove 15 is provided on the lower mold 4 outside the movable cylinder 14; the movable cylinder 14 forms a sliding structure through the through groove 15 and the lower mold 4, and a connecting strip 16 is vertically fixed to the bottom of the movable cylinder 14, and guide blocks 17 are symmetrically provided at both ends of the connecting strip 16, and the guide blocks 17 are serrated. When the movable tube 11 moves, it can drive the connecting rod 13 to move synchronously, and drive the movable cylinder 14 to slide in the through groove 15, and at the same time drive the guide blocks 17 to move synchronously through the connecting strip 16. When the movable block 18 is moved, the guide block 17 can contact with the movable block 18, and vibration can be generated by the contact between the two. Since the movable block 18 is restricted by the limit bar 19 and cannot rotate at this time, the contact between the movable block 18 and the guide block 17 can generate vibration, which can drive the movable tube 14 to slide on the connecting rod 13 during vibration. The elasticity of the spring will not affect the unloading during the movement of the movable tube 11, and the vibration force will be transmitted to the lower mold 4, and the vibration position moves with the movement of the injection position, so that the raw material can be distributed more evenly in the molding cavity 5. Therefore, after the injection is completed, the movable tube 11 moves to the edge, which can drive the connecting bar 16 and the guide block 17 to move to the edge.

As shown in Figures 6 to 8, a movable block 18 is provided on the lower end surface of the lower mold 4 above the guide block 17, and the movable blocks 18 are distributed at equal intervals, and the movable block 18 and the lower mold 4 are hinged, and the movable block 18 is inclined; the upper end inclined surface of the movable block 18 is connected to the lower mold 4 through a spring, and a limiting strip 19 is fixed at the edge of the lower end inclined surface of the movable block 18, and the upper end surface of the limiting strip 19 is in close contact with the lower end surface of the lower mold 4, and the movable block 18 can only rotate clockwise in its initial state; the lower edge of the movable block 18 is in close contact with the bottom of the support rod 7, and the top of the support rod 7 is fixed with a bottom plate 6, and the bottom plate 6 is in close contact with the inner bottom surface of the molding cavity 5, and the support rod 7 and the lower mold 4 are in sliding connection, when the sole is formed After molding, the upper mold 3 is separated from the lower mold 4, so that the reverse drive of the motor 8 can drive the movable tube 11 to move in the opposite direction, and can also drive the guide block 17 to contact the movable block 18, and the movable block 18 is no longer limited by the limit bar 19 and can rotate clockwise. When the guide block 17 moves to the bottom of the molding cavity 5, the movable block 18 can be rotated to contact the support rod 7, push the support rod 7 to slide on the lower mold 4, and push the bottom plate 6 upward to separate the sole from the molding cavity 5, which can accelerate the demoulding, so there is no need to use an additional demoulding structure. When the support rod 7 is not pushed, the bottom plate 6 can drop to contact the inner bottom surface of the molding cavity 5 by its own gravity, which will not affect the subsequent foaming molding of the sole.

As shown in Figures 1 to 3 and 7, the storage box 21 is connected to the movable tube 11 through the feeding hose 20, and a guide box 27 is fixed inside the storage box 21, and the cross-section of the guide box 27 is an inverted "V"-shaped structure; a cam 26 is fixedly provided on the bottom of the movable shaft 24, and an inclined metal sheet 28 is fixed on the guide box 27 on the side of the cam 26, and the cam 26 can contact the metal sheet 28 after rotation, and the screw 9 can drive the transmission shaft 22 to rotate through the pulley mechanism when the screw 9 rotates, and then the movable shaft 24 can be driven to rotate through the meshing transmission of the bevel gear set 23, so that when the movable tube 11 moves to inject material, the stirring rod 25 can be driven to rotate through the movable shaft 24 to stir the raw material and accelerate its melting, and the movable shaft 24 can drive the cam 26 to rotate synchronously, and can contact the metal sheet 28 during the rotation process, thereby generating vibration, and the vibration force is transmitted to both sides of the guide box 27, so that the bubbles generated during the stirring process can be vibrated out, so as to avoid a large number of bubbles in the raw material entering the feeding hose 20 and affecting the molding;

A foaming molding method of an environmentally friendly sole foaming molding device, the foaming molding method comprising the following steps:

S1: First, the raw material is poured into the material storage box 21 and heated and melted, and then the motor 8 drives the screw rod 9 to rotate to realize the movement of the movable tube 11, so as to inject the material into the molding cavity 5 at different positions, so that the upper mold 3 is driven by the cylinder 2 to descend and merge with the lower mold 4, so as to foam the product;

S2: Secondly, when the movable tube 11 moves to inject material, the contact between the guide block 17 and the movable block 18 can generate vibration, so that the material is distributed more evenly in the molding cavity 5, and the cam 26 is rotated and in contact with the metal sheet 28 by the transmission of the pulley mechanism and the bevel gear set 23, so that the large bubbles in the storage box 21 can be vibrated out by the vibration generated;

S3: Finally, after the sole is formed, the limit strip 19 and the guide block 17 move in opposite directions, which can push the movable block 18 to rotate, and then the bottom plate 6 can be pushed up through the support rod 7 to separate the product from the forming cavity 5.

In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. An environment-friendly sole foaming forming device is provided with a support frame (1), wherein an air cylinder (2) is arranged on the lower end face of the support frame (1), an output shaft of the air cylinder (2) is connected with an upper die (3), a lower die (4) is arranged below the upper die (3), the lower die (4) is arranged on the inner side of the support frame (1), and a forming cavity (5) is formed in the upper end face of the lower die (4);

characterized by comprising the following steps:

the motor (8) is arranged on the side of the support frame (1) through a bolt, an output shaft of the motor (8) is connected with a screw rod (9), a sleeve block (10) is sleeved on the outer side of the screw rod (9) in a threaded manner, the side surface of the sleeve block (10) is fixedly connected with one end of the movable pipe (11), a material injection nozzle (12) is arranged at the other end of the movable pipe (11), and the material injection nozzle (12) is positioned right above the forming cavity (5);

the side surfaces of the movable pipe (11) are connected with the side surfaces of the storage box (21) through a material conveying hose (20), and the storage box (21) is fixed on the upper end surface of the support frame (1);

The end part of the screw rod (9) is connected with a transmission shaft (22) through a belt pulley mechanism, the transmission shaft (22) is meshed with a movable shaft (24) through a bevel gear set (23), the movable shaft (24) penetrates through the top of the storage box (21) through a bearing, and a stirring rod (25) for stirring materials is fixed on the side surface of the movable shaft (24);

the movable pipe (11) forms a relative moving structure with respect to the upper die (3) and the lower die (4), the moving length of the movable pipe (11) is longer than that of the upper die (3) and the lower die (4), and a connecting rod (13) is fixed between the two movable pipes (11);

The bottom of the connecting rod (13) is provided with a movable cylinder (14) in a sliding manner, a spring is arranged between the connecting rod (13) and the movable cylinder (14), the connecting rod (13) is of a T-shaped structure, and meanwhile, a through groove (15) is formed in a lower die (4) at the outer side of the movable cylinder (14);

The movable cylinder (14) forms a sliding structure through the through groove (15) and the lower die (4), the bottom of the movable cylinder (14) is vertically fixed with the connecting strip (16), guide blocks (17) are symmetrically arranged at two ends of the connecting strip (16), and the guide blocks (17) are in a zigzag shape;

The lower end face of the lower die (4) above the guide block (17) is provided with movable blocks (18), the movable blocks (18) are distributed at equal intervals, the movable blocks (18) are hinged with the lower die (4), and meanwhile the movable blocks (18) are obliquely arranged;

The upper end inclined plane of the movable block (18) is connected with the lower die (4) through a spring, a limit strip (19) is fixed at the edge of the lower end inclined plane of the movable block (18), the upper end face of the limit strip (19) is in contact with the lower end face of the lower die (4), and meanwhile the initial state of the movable block (18) can only rotate clockwise.

2. The environment-friendly sole foaming molding device according to claim 1, wherein: the lower edge of the movable block (18) is connected with the bottom of the supporting rod (7) in a bonding mode, the bottom plate (6) is fixed at the top of the supporting rod (7), the bottom plate (6) is arranged on the inner bottom surface of the forming cavity (5) in a bonding mode, and meanwhile the supporting rod (7) is connected with the lower die (4) in a sliding mode.

3. The environment-friendly sole foaming molding device according to claim 1, wherein: the storage box (21) is communicated with the movable pipe (11) through the material conveying hose (20), a guide box (27) is fixed in the storage box (21), and the section of the guide box (27) is of an inverted V-shaped structure.

4. An environmentally friendly sole foam molding device as claimed in claim 3, wherein: the bottom of the movable shaft (24) is fixedly sleeved with a cam (26), an inclined metal sheet (28) is fixed on a guide box (27) at the side of the cam (26), and the cam (26) can be contacted with the metal sheet (28) after rotating.

5. The foam molding method of the foam molding device for environment-friendly soles according to claim 1, wherein the foam molding method comprises the following steps: the foam molding method comprises the following steps:

s1: firstly, pouring raw materials into a storage box (21) for heating and melting, driving a screw rod (9) to rotate through a motor (8) to realize movement of a movable tube (11) so as to fill molding cavities (5) at different positions, and driving an upper die (3) to descend through a cylinder (2) and then combining with a lower die (4) so as to foam and mold products;

s2: secondly, when the movable pipe (11) moves for injecting materials, vibration can be generated through the contact of the guide block (17) and the movable block (18), so that raw materials are distributed in the forming cavity (5) more uniformly, and the cam (26) is rotated and contacted with the metal sheet (28) by utilizing the transmission of the belt pulley mechanism and the bevel gear set (23), so that large bubbles existing in the storage box (21) can be vibrated out through the generated vibration;

S3: finally, after the sole is molded, the limiting strips (19) and the guide blocks (17) move reversely, so that the movable blocks (18) can be pushed to rotate, and then the bottom plate (6) can be pushed to lift through the supporting rods (7), so that separation of products and the molding cavity (5) can be realized.