EVA (Ethylene Vinyl Acetate) foaming slipper mold

Abstract

The invention relates to the technical field of material forming, and particularly discloses an EVA foaming slipper mold which comprises a mold frame, a fixed mold is fixedly installed in an inner cavity of the mold frame, a movable mold is slidably connected to the upper surface of the fixed mold, a first limiting rod is fixedly installed on the upper surface of the movable mold, and a first air cylinder is fixedly installed on the bottom wall of the top end of the mold frame. According to the invention, the demolding assembly has a buffering effect, and the demolding mechanism performs flexible demolding according to the adhesion degree of the mold and the mold cavity through two times of buffering, so that the outer surface of the slipper mold is prevented from being damaged by forced demolding; and meanwhile, an alarm can be given out in time when the adhesion force between the mold and the mold cavity is too large during demolding, equipment can be maintained in time, meanwhile, the mold is checked, mass production is avoided, and quantitative discharging can be conducted according to raw materials needed by hot press molding through the discharging assembly.

Description

Technical Field

[0001] The present application relates to the field of material forming technology, and in particular to an EVA foam slipper mold. Background Art

[0002] EVA (ethylene-vinyl acetate copolymer), a mainstream material in the footwear industry, dominates the market thanks to its unique molecular structure. The ethylene segments in its molecular chain provide crystalline support, imparting rigidity and dimensional stability. This material exhibits excellent softness, rubber-like elasticity, and chemical stability, maintaining good flexibility even at low temperatures. Its environmentally friendly properties, such as being non-toxic and odorless, make it an ideal choice for key components in sports shoes and slippers. As living conditions improve, people's expectations for slippers are also increasing. Consequently, companies are demanding further improvements in product quality and production efficiency.

[0003] The existing technology still has the following problems: 1. Existing slipper molds are prone to damage to slippers when demolding. When the demolding mechanism is forced to demold, due to the certain adhesion between the mold and the membrane cavity, forced demolding will exert excessive local stress on the surface of the mold cavity, causing scratches, pits or cracks on the mold surface, and even directly destroying the hot-pressed slippers. In addition, it is difficult to detect the degree of adhesion between the mold and the membrane cavity in time during use, which can easily lead to batch defective products. In addition, due to the large interaction force during the pressing process of the upper and lower molds, deviation is prone to occur, and the deviation causes the flow path of the molten material to change, leaving obvious flow marks or weld lines on the surface, reducing the aesthetics of the product.

[0004] 2. Existing slipper molds cannot accurately control the amount of material discharged during the hot pressing process. Excessive raw material will overflow the mold gap, forming flash on the edge of the product, requiring additional trimming processes and increasing labor costs. Insufficient raw material will cause partial underfilling of the sole, forming depressions or holes, which will be directly judged as scrap. In addition, due to the different slipper molds, the amount of EVA foaming raw material required is difficult to control, which increases the cost of manual intervention and affects production efficiency. Summary of the Invention

[0005] In order to overcome the problem that the slippers are easily damaged when the mold is demoulded, the demoulding mechanism will impose excessive local stress on the mold cavity surface due to the certain adhesion between the mold and the membrane cavity during forced demoulding, which will cause scratches, pits or cracks on the mold surface and even directly damage the hot-pressed slippers. In addition, it is difficult to detect the degree of adhesion between the mold and the membrane cavity in time during use, which can easily lead to batch defective products. In addition, due to the large interaction force during the pressing process of the upper and lower molds, deviation is likely to occur, and the deviation causes the flow path of the molten material to change. Obvious flow marks or weld lines are left on the surface, reducing the aesthetics of the product. The slipper mold cannot accurately control the amount of material fed during the hot pressing process. Excessive raw materials will overflow the mold gap, forming flash on the edge of the product, requiring additional trimming steps, increasing labor costs. Insufficient raw materials lead to partial unfilled soles, forming depressions or holes, which are directly judged as waste products. In addition, due to the different slipper molds, the amount of EVA foaming raw materials required is difficult to control, which increases the cost of manual intervention and affects production efficiency. The purpose of the present invention is to provide an EVA foam slipper mold to solve the above-mentioned shortcomings.

[0006] The present application provides an EVA foam slipper mold, comprising a mold frame, a fixed mold is fixedly installed in the inner cavity of the mold frame, the upper surface of the fixed mold is slidably connected to the movable mold, the upper surface of the movable mold is fixedly installed with a first limiting rod, the top bottom wall of the mold frame is fixedly installed with a first cylinder, the top bottom wall of the mold frame is fixedly installed with a blanking assembly, the inner cavity of the fixed mold is provided with a demolding assembly, guide columns are fixedly installed at the four corners of the lower surface of the movable mold, the inner cavity of the bottom end of the movable mold is provided with a foot mold, the upper surface of the fixed mold is provided with a membrane cavity, the bottom end of the mold frame is provided with an electric heating pipe, and the electric heating pipe is located below the fixed mold, the demolding assembly comprises a demolding frame, a first clamping rod is fixedly installed on the upper surface of the demolding frame, a second limiting rod is fixedly installed on the inner wall of the fixed mold, flexible demolding mechanisms are provided at both ends of the demolding frame, positioning mechanisms are provided at both ends of the demolding frame, a connecting strip is fixedly installed in the inner cavity of the demolding frame, there are two connecting strips, flexible rods are provided at both ends of the connecting strip, and alarm mechanisms are provided at both ends of the connecting strip.

[0007] Furthermore, the inner cavity of the first cylinder is slidably connected to the first piston rod, the upper surface of the movable mold is fixedly connected to the first piston rod, the first limiting rod is slidably connected to the mold frame, the upper surface of the fixed mold is provided with a socket, the guide column and the socket are inserted into, and when the fixed mold and the movable mold are engaged, the foot mold is located in the inner cavity of the membrane cavity, a membrane cavity has two flexible rods, an injection hole is provided on the upper surface of the movable mold, the demolding frame and the second limiting rod are slidably connected, and the demolding frame and the inner cavity of the fixed mold are slidably connected.

[0008] Furthermore, the flexible demolding mechanism includes a connecting frame, the inner cavities at both ends of the connecting frame are slidably connected with a first sliding rod, one end of the first sliding rod is fixedly installed with a clamping block, the outer surface of the first sliding rod is sleeved with a first spring, the lower surface of the movable mold is fixedly installed with a connecting rod, the bottom end of the connecting rod is fixedly installed with a first fixing bar, the two ends of the first fixing bar are rotatably connected with a pressure rod, the connecting rod is located in the middle part of the connecting frame, the clamping block and the connecting frame are slidably connected, the upper and lower sides of the clamping block near the middle part of the connecting frame are inclined surfaces, when the fixed mold and the movable mold are engaged, the pressure rod squeezes the inclined surface of the clamping block, and the connecting frame and the demolding frame are fixedly connected.

[0009] The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame with an outer surface provided with a first button, and the outer surface of the cam is provided with a sliding groove, and the outer surface of the demolding frame is slidably connected to the floating plate, and the outer surface of the floating plate is fixedly installed with a second slide bar, the second slide bar and the slide groove are slidably connected, the outer surface of the second slide bar is sleeved with a gasket, and the upper surface of the floating plate is provided with a groove, and the lower surface of the first fixed bar is fixedly installed with a positioning rod, the middle part of the positioning rod and the floating plate are aligned, the outer surface of the demolding frame is fixedly installed with a first alarm, the outer surface of the second slide bar is sleeved with a second spring, the second spring is located between the floating plate and the gasket, the gasket and the inner wall of the limit frame are slidably connected, the first button and the first alarm are electrically connected, and pressing the first button controls the first alarm to sound an alarm, the limit frame and the demolding frame are fixedly connected, there is a gap between the end of the second slide bar away from the floating plate and the first button, and the height of the second slide bar is flush with the first button.

[0010] Furthermore, the flexible rod includes a sleeve rod, which is fixedly connected to the connecting strip, and the inner cavity of the sleeve rod is slidably connected to the elastic rod, and the top end of the elastic rod is fixedly installed with a demolding disk, and the demolding disk and the inner cavity of the membrane cavity form an integral whole, and the bottom end of the elastic rod is fixedly installed with a second fixed strip, and the inner wall of the second fixed strip is fixedly installed with a third sliding rod, and the outer surface of the third sliding rod is sleeved with a third spring, and limiting blocks are fixedly installed at both ends of the sleeve rod, and the third spring is located between the second fixed strip and the limiting block, the second fixed strip and the sleeve rod are slidably connected, and a perforation is opened on the upper surface of the connecting strip, and the third sliding rod and the perforation of the connecting strip are slidably connected.

[0011] The cam is fixedly provided with a second spring which is fixed to the outer surface of the alarm frame, and the cam is connected to the second alarm frame by a threaded connection. The cam is fixedly provided with a second spring which is fixed to the outer surface of the alarm frame, and the cam is connected to the second alarm frame by a threaded connection. The cam is connected to the second alarm frame by a threaded connection. The cam is connected to the second alarm frame by a threaded connection. The cam is connected to the second alarm frame by a threaded connection. The cam is connected to the second alarm frame by a threaded connection.

[0012] Furthermore, the blanking assembly includes a material box, a connecting block is fixedly installed on the outer surface of the material box, the connecting block is fixedly connected to the top and bottom walls of the mold frame, a limit frame is fixedly installed on the upper surface of the material box, an adjusting frame is provided below the limit frame, an adjusting mechanism is fixedly installed on the upper surface of the material box, the bottom end of the adjusting mechanism is fixedly connected to the adjusting frame, the inner cavity of the adjusting frame is slidably connected to the quantitative mechanism, a second cylinder is provided on the upper surface of the adjusting frame, the inner cavity of the second cylinder is slidably connected to the second piston rod, a discharge port is provided at the bottom end of the material box, there are two discharge ports, a blanking port is provided on the outer surface of the adjusting frame, a material guide pipe is sleeved on the bottom end of the blanking port, an injection hole is sleeved on the bottom end of the material guide pipe and the upper surface of the movable mold, there are two discharge ports, and the distance between the two discharge ports and the two blanking ports is equal, the discharge port and the discharge port are staggered, there are two quantitative mechanisms, and a pull rod is provided between the quantitative mechanisms.

[0013] Furthermore, the adjusting mechanism includes a fixed block, the inner cavity of the fixed block is rotatably connected to the first threaded rod, the lower surface of the fixed block is slidably connected to the driving block, the outer surface of the driving block is fixedly installed with the driving rod, the four corners of the lower surface of the fixed block are fixedly installed with a storage rod, the inner cavity of the storage rod is slidably connected to the lifting rod, the bottom end of the lifting rod is fixedly installed with a lifting plate, the outer surface of the lifting plate is provided with a driving groove, the driving groove is inclined, the driving rod and the driving groove are slidably connected, the fixed block and the lower surface of the material box are fixedly connected, the lifting plate and the surface of the adjusting frame are fixedly connected, and the driving block and the first threaded rod are connected by threads.

[0014] Furthermore, the quantitative mechanism includes a first material box, the inner cavity of the first material box is slidably connected to the second material box, the upper surface of the second material box is fixedly connected to the shielding plate, and the outer surface of the second material box is slidably connected to the adjusting rod.

[0015] Furthermore, the pull rod fixedly connects the two first material boxes, the first material box and the adjustment frame are slidably connected, the second material box and the limit frame are slidably connected, the first material box and the second material box are both provided with connecting holes, the upper surface of the baffle plate and the lower surface of the material box are tightly fitted, and the second piston rod is fixedly connected to the outer surface of one of the first material boxes.

[0016] The technical solution provided by this application has at least the following technical effects or advantages: 1. The use of demoulding components effectively solves the problem that the existing slipper mold is prone to damage when demoulding the slippers. When the demoulding mechanism is forced to demould, due to the certain adhesion between the mold and the membrane cavity, forced demoulding will apply excessive local stress to the mold cavity surface, which will cause scratches, pits or cracks on the mold surface, and even directly damage the hot-pressed slippers. In addition, it is difficult to detect the degree of adhesion between the mold and the membrane cavity in time during use, which easily leads to the appearance of batch defective products. In addition, due to the large interaction force during the pressing process of the upper and lower molds, deviation is prone to occur, which causes the flow path of the molten material to change, leaving marks on the surface. The present invention has a buffering effect through the demoulding component. Through two buffers, the demoulding mechanism can perform flexible demoulding according to the degree of adhesion between the mold and the membrane cavity, thereby preventing forced demoulding from damaging the outer surface of the slipper mold. At the same time, when the adhesion between the mold and the membrane cavity is too strong during demoulding, an alarm can be issued in time, which is convenient for timely maintenance of the equipment and inspection of the mold to avoid the occurrence of batch production. In addition, the upper and lower molds can be buffered during pressing, reducing equipment wear. At the same time, when the mold is offset, an alarm can be issued in time to ensure that the quality of the production mold meets production requirements and improve product quality.

[0017] 2. The use of a blanking component effectively solves the problem that the existing slipper mold cannot accurately control the blanking amount during the hot pressing process. Excessive raw materials will overflow the mold gap, forming flash on the edge of the product, requiring an additional trimming process, increasing labor costs. Insufficient raw materials will cause the sole to be partially unfilled, forming depressions or holes, which are directly judged as waste products. In addition, due to the different slipper molds, the amount of EVA foaming raw materials required is difficult to control, which increases the cost of manual intervention and affects production efficiency. The present invention can use the blanking component to carry out quantitative blanking according to the raw materials required for hot pressing molding, and can adjust the quantitative blanking amount according to the sizes of different slippers, thereby reducing later manual intervention and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 This is a schematic diagram of the blanking assembly structure in an embodiment of the present application; Figure 3 Schematic diagram of the adjustment frame structure in the embodiment of the present application; Figure 4 Schematic diagram of the structure of the adjustment mechanism in the embodiment of the present application; Figure 5 Schematic diagram of the cross-section of the material box structure in the embodiment of the present application; Figure 6 Schematic diagram of the quantitative mechanism structure in the embodiment of the present application; Figure 7 This is a schematic diagram of the foot mold structure in an embodiment of the present application; Figure 8 Schematic diagram of the membrane cavity structure in the embodiment of this application; Figure 9 Schematic diagram of the demoulding assembly structure in an embodiment of the present application; Figure 10 Schematic diagram of the flexible demoulding mechanism structure in an embodiment of the present application; Figure 11 This is a schematic diagram of the local structure of the connecting rod in the embodiment of the present application; Figure 12 Schematic diagram of the groove structure in the embodiment of the present application; Figure 13 This is a schematic diagram of the partial structure of the connecting strip in the embodiment of the present application; Figure 14 This is a schematic cross-sectional view of the alarm frame structure in an embodiment of the present application.

[0019] Figure: 1, mold frame; 2, fixed mold; 3, movable mold; 4, first limit rod; 5, first cylinder; 6, blanking assembly; 61, material box; 62, connecting block; 63, limit frame; 64, adjustment frame; 65, adjustment mechanism; 651, fixed block; 652, first threaded rod; 653, drive block; 654, drive rod; 655, storage rod; 656, lifting rod; 657, lifting plate; 658, drive slot; 66, quantitative mechanism ; 661, first material box; 662, second material box; 663, shielding plate; 664, adjusting rod; 67, second cylinder; 68, discharge port; 69, feed port; 610, guide pipe; 611, pull rod; 7, demoulding assembly; 71, demoulding frame; 72, first clamping rod; 73, second limiting rod; 74, flexible demoulding mechanism; 741, connecting frame; 742, first sliding rod; 743, clamping block; 744, first spring; 745, connecting Rod; 746, first fixing bar; 747, pressure bar; 75, positioning mechanism; 751, limit frame; 752, first button; 753, slide; 754, floating plate; 755, second slide bar; 756, gasket; 757, groove; 758, positioning rod; 759, first alarm; 7510, second spring; 76, connecting bar; 77, flexible rod; 771, sleeve rod; 772, elastic rod; 773, demoulding plate; 774 , second fixing bar; 775, third sliding rod; 776, third spring; 777, limit block; 78, alarm mechanism; 781, connecting frame; 782, second threaded rod; 783, slider; 784, slot; 785, alarm frame; 786, second clamping rod; 787, rolling ball; 788, fourth spring; 789, pressing block; 7810, second alarm; 7811, second button; 8, guide column; 9, foot mold; 10, membrane cavity. DETAILED DESCRIPTION

[0020] Since the slippers are easily damaged when being demoulded from the slippers mold, the present invention has a buffering effect through the demoulding component. Through two buffers, the demoulding mechanism can perform flexible demoulding according to the degree of adhesion between the mold and the membrane cavity, thereby preventing forced demoulding from damaging the outer surface of the slipper mold. For the problem of being unable to accurately control the blanking amount, the present invention can perform quantitative blanking according to the raw materials required for hot pressing molding through the blanking component, and can adjust the quantitative blanking amount according to the sizes of different slippers.

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] See also Figure 1 and Figure 7As shown, an EVA foam slipper mold includes a mold frame 1, an inner cavity of the mold frame 1 is fixedly installed with a fixed mold 2, the upper surface of the fixed mold 2 is slidably connected with a movable mold 3, the upper surface of the movable mold 3 is fixedly installed with a first limiting rod 4, the top bottom wall of the mold frame 1 is fixedly installed with a first cylinder 5, the top bottom wall of the mold frame 1 is fixedly installed with a blanking component 6, the inner cavity of the fixed mold 2 is provided with a demoulding component 7, the four corners of the lower surface of the movable mold 3 are fixedly installed with guide columns 8, the bottom inner cavity of the movable mold 3 is provided with a foot mold 9, the foot mold 9 is smaller than the movable mold 3 and the membrane cavity 10 to form a cavity, the upper surface of the fixed mold 2 is opened A membrane cavity 10 is provided, and an electric heating tube is provided at the bottom end of the mold frame 1, and the electric heating tube is located below the fixed mold 2. The movable mold 3 is driven downward by the operation of the first cylinder 5 to engage the fixed mold 2 and the movable mold 3. The first limit rod 4 is used to ensure that the position of the movable mold 3 remains stable when moving up and down. The blanking component 6 is used to quantitatively add EVA foaming material, and the demoulding component 7 is used for automatic demoulding when the fixed mold 2 and the movable mold 3 are separated. The guide column 8 and the jack on the fixed mold 2 are used to accurately place the foot mold 9 in the inner cavity of the membrane cavity 10, so that the EVA foaming raw material can be hot-pressed into slippers under the operation of the electric heating tube.

[0023] See also Figure 2 、 Figure 3 and Figure 5As shown, the blanking assembly 6 includes a material box 61, the outer surface of the material box 61 is fixedly installed with a connecting block 62, the connecting block 62 is fixedly connected to the top and bottom walls of the mold frame 1, the upper surface of the material box 61 is fixedly installed with a limit frame 63, and an adjustment frame 64 is provided below the limit frame 63. The upper surface of the material box 61 is fixedly installed with an adjustment mechanism 65, the bottom end of the adjustment mechanism 65 is fixedly connected to the adjustment frame 64, the inner cavity of the adjustment frame 64 is slidably connected to the quantitative mechanism 66, and the upper surface of the adjustment frame 64 is provided with a second cylinder 67, and the inner cavity of the second cylinder 67 is slidably connected to The second piston rod, the bottom end of the material box 61 is provided with a discharge port 68, and there are two discharge ports 68. The outer surface of the adjustment frame 64 is provided with a discharge port 69, and the bottom end of the discharge port 69 is sleeved with a guide tube 610. The bottom end of the guide tube 610 and the upper surface of the movable mold 3 are sleeved with an injection hole. There are two discharge ports 68, and the distance between the two discharge ports 68 and the two discharge ports 69 is equal. The discharge ports 68 and the discharge ports 68 are staggered, so that the discharge port 69 will not leak when the quantitative mechanism 66 is moved to load the material, and the raw material of the material box 61 will not enter the quantitative mechanism 6 when unloading. 6, to ensure the accuracy of quantitative feeding, there are two quantitative mechanisms 66, and a pull rod 611 is provided between the quantitative mechanisms 66. The pull rod 611 is used to connect the two adjustment mechanisms 65 to facilitate synchronous loading and unloading, and the two membrane cavities 10 can be hot-pressed at the same time, so as to quickly make slippers. The material box 61 is used to place the EVA foam material, and the material box 61 is fixed to the outer surface of the mold frame 1 as a whole through the connecting block 62. The second piston rod is driven to move by the work of the second cylinder 67, so that the adjustment mechanism 65 slides between the limit frame 63 and the adjustment frame 64, and the second cylinder 67 is used to drive the second piston rod to move. The raw material is injected into the inner cavity of the regulating mechanism 65 through the discharge port 68, and is poured into the guide tube 610 through the discharge port 69 during the movement of the regulating mechanism 65, and is injected into the inner cavity of the movable mold 3 through the guide tube 610, and finally enters the membrane cavity 10 for hot pressing to form the finished slippers. The quantitative discharge can be achieved by adjusting the regulating mechanism 65 and the quantitative mechanism 66, which is convenient for adjusting according to the amount of EVA foam material required for the slippers, preventing waste of EVA foam material, and avoiding defects in the hot-pressed slippers caused by insufficient EVA foam material.

[0024] See also Figure 4 、 Figure 5 and Figure 6As shown, the adjustment mechanism 65 includes a fixed block 651, the inner cavity of the fixed block 651 is rotatably connected to the first threaded rod 652, the lower surface of the fixed block 651 is slidably connected to the driving block 653, the outer surface of the driving block 653 is fixedly installed with a driving rod 654, the four corners of the lower surface of the fixed block 651 are fixedly installed with a storage rod 655, the inner cavity of the storage rod 655 is slidably connected to the lifting rod 656, the bottom end of the lifting rod 656 is fixedly installed with a lifting plate 657, the outer surface of the lifting plate 657 is provided with a driving groove 658, the driving groove 658 is inclined, the driving rod 654 and the driving groove 658 are slidably connected, the fixed block 651 is fixedly connected to the lower surface of the material box 61, the lifting plate 657 is fixedly connected to the surface of the adjustment frame 64, the driving block 653 and the first threaded rod 652 are connected by threads, and the quantitative mechanism 66 includes a first material box 661, the inner cavity of the first material box 661 is slidably connected to the second material box 662, the upper surface of the second material box 662 is fixedly connected to the shielding plate 663, and the outer surface of the second material box 662 is slidably connected to the adjusting rod 664. The pull rod 611 fixes the two first material boxes 661, the first material box 661 and the adjustment frame 64 are slidably connected, and the second material box 662 and the limit frame 63 are slidably connected. In this way, when the distance between the limit frame 63 and the adjustment frame 64 is adjusted, the position of the second material box 662 in the inner cavity of the first material box 661 changes, thereby adjusting the inner cavity capacity of the first material box 661 and the second material box 662. The first material box 661 and the second material box 662 are both open A connecting hole is provided for the raw materials in the material box 61 to enter the first material box 661 and the second material box 662 from the discharge port 68 and the connecting hole, and the capacity of the first material box 661 and the second material box 662 is fixed, so as to realize quantitative unloading. The second piston rod of the second cylinder 67 drives the first material box 661 to move, and drives the other first material box 661 to move through the pull rod 611, so that the raw materials enter the guide pipe 610 from the connecting hole and the discharge port 69 to realize feeding. The upper surface of the baffle plate 663 is tightly fitted with the lower surface of the material box 61, and the second piston rod is fixedly connected to the outer surface of one of the first material boxes 661. When the amount of EVA foam material needs to be adjusted, the driving block 653 is driven to slide on the fixed block 651 by rotating the first threaded rod 652. The sliding of the driving block 653 drives the driving rod 654 to move in the inner cavity of the driving slot 658. The movement of the driving rod 654 drives the position of the lifting rod 656 in the inner cavity of the storage rod 655 to change. At this time, the distance between the lifting plate 657 and the fixed block 651 changes, thereby changing the distance between the adjustment frame 64 and the limit frame 63. That is, the lifting plate 657 drives the adjustment frame 64 to move up and down. The up and down movement of the adjustment frame 64 drives the position of the second material box 662 in the inner cavity of the first material box 661 to change, thereby changing the capacity of the cavities of the first material box 661 and the second material box 662. The capacity of the inner cavities of the first material box 661 and the second material box 662 can be further adjusted by sliding the adjusting rod 664 in the position of the inner cavity of the second material box 662.The material can be quantitatively discharged according to the raw materials required for hot pressing and the amount of quantitative discharge can be adjusted according to the size of the slippers. The two first and second material boxes 661 and 662 can be adjusted synchronously and independently, which is convenient for adjusting according to the amount of EVA foam material used. The shielding plate 663 is used to block the discharge port 68 when the first material box 661 is moving, preventing the EVA foam material in the first and second material boxes 661 and 662 from leaking when entering the material guide pipe 610. This ensures accurate dosage, reduces later manual intervention, and improves production efficiency.

[0025] See also Figure 8 and Figure 9 As shown, the demoulding assembly 7 includes a demoulding frame 71, a first clamping rod 72 is fixedly installed on the upper surface of the demoulding frame 71, a second limiting rod 73 is fixedly installed on the inner wall of the fixed mold 2, and flexible demoulding mechanisms 74 are provided at both ends of the demoulding frame 71. Positioning mechanisms 75 are provided at both ends of the demoulding frame 71, and a connecting strip 76 is fixedly installed in the inner cavity of the demoulding frame 71. There are two connecting strips 76, and flexible rods 77 are provided at both ends of the connecting strip 76. Alarm mechanisms 78 are provided at both ends of the connecting strip 76. The inner cavity of the first cylinder 5 is slidably connected with the first piston rod, the upper surface of the movable mold 3 is fixedly connected to the first piston rod, the first limiting rod 4 is slidably connected to the mold frame 1, and a socket is provided on the upper surface of the fixed mold 2. The guide column 8 is plugged into the socket. When the fixed mold 2 and the movable mold 3 are engaged, the foot mold 9 is located in the inner cavity of the membrane cavity 10. A membrane cavity 1 0 There are two flexible rods 77 in the inner cavity, and an injection hole is provided on the upper surface of the movable mold 3. The demolding frame 71 and the second limit rod 73 are slidably connected. The demolding frame 71 is slidably connected to the inner cavity of the fixed mold 2. When the movable mold 3 moves upward, it can drive the demolding frame 71 to move upward. At this time, the demolding frame 71 drives the flexible rod 77 to squeeze the inner cavity of the membrane cavity 10, and the flexible demolding mechanism 74 and the flexible rod 77 both have flexible force to prevent the outer surface of the slipper from being damaged by too strong rigidity during demolding, and ensure the uniformity of the force on the molding mold during demolding. At the same time, when the extrusion force causes the connecting strip 76 to undergo a large deformation, the alarm mechanism 78 sounds an alarm, which is convenient for the staff to carry out subsequent maintenance. The positioning mechanism 75 can be used to detect the positioning accuracy between the fixed mold 2 and the movable mold 3, and prevent the guide column 8 and the jack from tilting under long-term pressing, which affects the quality of the slippers.

[0026] See also Figure 7 、 Figure 10 、 Figure 11 and Figure 12As shown, the flexible demoulding mechanism 74 includes a connecting frame 741, and the inner cavities at both ends of the connecting frame 741 are slidably connected to the first sliding rod 742, and one end of the first sliding rod 742 is fixedly installed with a clamping block 743. The outer surface of the first sliding rod 742 is sleeved with a first spring 744. The lower surface of the movable mold 3 is fixedly installed with a connecting rod 745, and the bottom end of the connecting rod 745 is fixedly installed with a first fixing bar 746. The gasket 756 is used to prevent the second spring 7510 and the inner wall of the limit frame 751 from being scratched. The two ends of the first fixing bar 746 are rotatably connected with a pressure rod 747. The connecting rod 745 is located in the middle part of the connecting frame 741, and the clamping block 743 is slidably connected to the connecting frame 741. The clamping block 743 is close to the middle part of the connecting frame 741 and has inclined surfaces on the upper and lower sides. When the mold 2 and the movable mold 3 are engaged, the pressure rod 747 squeezes the inclined surface of the card block 743, and the connecting frame 741 is fixedly connected to the demolding frame 71. The positioning mechanism 75 includes a limiting frame 751, the outer surface of the limiting frame 751 is provided with a first button 752, the outer surface of the limiting frame 751 is provided with a slide groove 753, the outer surface of the demolding frame 71 is slidably connected with a floating plate 754, the outer surface of the floating plate 754 is fixedly installed with a second slide rod 755, the second slide rod 755 and the slide groove 753 are slidably connected, the outer surface of the second slide rod 755 is sleeved with a gasket 756, the upper surface of the floating plate 754 is provided with a groove 757, the lower surface of the first fixing bar 746 is fixedly installed with a positioning rod 758, the middle part of the positioning rod 758 and the floating plate 754 are aligned, and the demolding frame The outer surface of 71 is fixedly installed with a first alarm 759, and the outer surface of the second slide bar 755 is sleeved with a second spring 7510, the second spring 7510 is located between the floating plate 754 and the gasket 756, the gasket 756 and the inner wall of the limit frame 751 are slidably connected, the first button 752 and the first alarm 759 are electrically connected, and the pressing of the first button 752 controls the first alarm 759 to sound an alarm, the limit frame 751 and the demoulding frame 71 are fixedly connected, and there is a gap between the end of the second slide bar 755 away from the floating plate 754 and the first button 752, and the height of the second slide bar 755 and the first button 752 are flush, and when the movable mold 3 moves downward, the connecting rod 745 is driven downward, and the downward movement of the connecting rod 745 drives the first fixed bar 746 and the pressure rod 747 downward. When the first locking cam 746 is in the state of being clamped, the locking cam 743 of the locking cam 747 is clamped in the state of being clamped.When the second locking cam 752 is in the unlock state, the locking cam 754 is in the unlock state, and the locking cam 754 is in the unlock state, so that the second locking cam 752 is unlocked and the locking cam 754 is in the unlock state. The first clamping rod 72 is used to squeeze the inner wall of the fixed mold 2. At this time, the pressure rod 747 passes through the block 743 to prevent the demolding frame 71 from continuing to move up, and the second limiting rod 73 is convenient for the demolding frame 71 to remain stable during the up and down movement. Because the pressure rod 747 and the inclined surface of the block 743 are squeezed, the flexible rod 77 will not immediately squeeze the slipper in the inner cavity of the membrane cavity 10, so that the flexible rod 77 has a flexible force during demolding. When the slipper and the inner cavity of the membrane cavity 10 stick together, it can prevent the slipper from being damaged. It can buffer the fixed mold 2 and the movable mold 3 during pressing, reduce equipment wear, and can timely alarm when the mold is offset, ensuring that the quality of the production mold meets production requirements and improves product quality.

[0027] See also Figure 7 、 Figure 9 、 Figure 13 and Figure 14When the locking cam 773 is unlocked, the locking cam 774 is unlocked and the lock cam 776 is unlocked, so that the master lock 710 can be unlocked. The locking mechanism 78 is configured to lock the locking cam 786 with the second locking cam 787, and the second locking cam 788 is configured to lock the locking cam 787 with the second locking cam 788. The fourth spring 788 is sleeved, and a pressing block 789 is fixedly installed on the outer surface of the second clamping rod 786. The pressing block 789 and the inner cavity of the alarm frame 785 are slidably connected. The fourth spring 788 is located between the inner wall of the alarm frame 785 and the pressing block 789. The outer surface of the alarm frame 785 is fixedly installed with a second alarm 7810. The second alarm 7810 and the first alarm 759 use alarms with different tones and loudness to prevent confusion between the two. The outer surface of the alarm frame 785 is provided with a second button 7811. The second button 7811 is electrically connected to the second alarm 7810, and pressing the second button 7811 controls the second alarm 7810 to sound an alarm. The ball 787 and the slider 783 fit tightly, and the second clamping rod 786 When the shoe mold and the shoe cavity 10 are adhered, the slippers will squeeze the demolding plate 773, causing the elastic rod 772 to slide in the inner cavity of the sleeve rod 771, at this time, the second fixed bar 774 drives the third sliding bar 775 to slide in the inner cavity of the limit block 777, so that the squeezing force of the demolding plate 773 on the slippers slowly increases, thereby preventing the demolding plate 773 from being too rigid and damaging the outer surface of the slippers.When the mold is demolded, the mold plate 773 is pressed against the mold base 774, and the mold base 774 is pressed against the mold base 775, thereby preventing the mold base 77 from being damaged. The inner cavity of the frame 785 slides, and the sliding of the second clamping rod 786 drives the pressing block 789 to squeeze the second button 7811. The pressing of the second button 7811 drives the second alarm 7810 to sound an alarm, which is convenient for reminding the staff that there is a large adhesion between the inner cavity of the membrane cavity 10 and the mold and maintenance is required. At the same time, the second threaded rod 782 can be rotated to drive the slider 783 to slide on the connecting frame 781, so that the height difference between the clamping groove 784 and the second clamping rod 786 changes, which is convenient for adjusting the height difference according to needs, thereby ensuring the integrity of the outer surface of the slipper mold. Through two buffers, the demoulding mechanism can perform flexible demoulding according to the degree of adhesion between the mold and the membrane cavity 10, preventing forced demoulding from damaging the outer surface of the slipper mold. At the same time, if the adhesion between the mold and the membrane cavity 10 is too large during demoulding, an alarm can be issued in time, which is convenient for timely maintenance of the equipment.

[0028] To sum up, the movable mold 3 is driven downward by the operation of the first cylinder 5, and the fixed mold 2 and the movable mold 3 are engaged. The first limit rod 4 is used to ensure that the position of the movable mold 3 remains stable when it moves up and down. The blanking component 6 is used to quantitatively add EVA foam material. The demoulding component 7 is used for automatic demoulding when the fixed mold 2 and the movable mold 3 are separated. The guide column 8 and the jack on the fixed mold 2 are inserted to accurately place the foot mold 9 in the inner cavity of the membrane cavity 10, so as to facilitate the subsequent hot pressing of the slippers under the operation of the electric heating tube. The material box 61 is used to place the EVA foam material, and the material box 61 is fixed as a whole to the outer surface of the mold frame 1 through the connecting block 62. The second piston rod is driven to move by the operation of the second cylinder 67, so that the adjustment mechanism 65 slides between the limit frame 63 and the adjustment frame 64, and the raw material is injected into the inner cavity of the adjustment mechanism 65 through the discharge port 68. During the movement of the adjustment mechanism 65, the raw material is poured into the guide pipe 610 through the blanking port 69 and injected into the movable mold through the guide pipe 610 The inner cavity of 3 finally enters the membrane cavity 10 for hot pressing molding, and finally forms the finished slippers. The quantitative feeding can be achieved by adjusting the adjusting mechanism 65 and the quantitative mechanism 66, which is convenient for adjusting according to the amount of EVA foam material required for the slippers, thereby preventing waste of EVA foam material and avoiding defects in the hot-pressed slippers caused by insufficient EVA foam material. The movable mold 3 can drive the demoulding frame 71 to move upward when moving upward. At this time, the demoulding frame 71 drives the flexible rod 77 to squeeze the inner cavity of the membrane cavity 10, and the flexible demoulding mechanism 74 and the flexible rod 77 both have flexible force to prevent the rigidity from being too strong during demoulding and damaging the outer surface of the slippers, thereby ensuring the uniformity of the force on the molding mold during demoulding. At the same time, when the extrusion force causes the connecting strip 76 to undergo a large deformation, the alarm mechanism 78 sounds an alarm, which is convenient for the staff to carry out subsequent maintenance. The positioning mechanism 75 can be used to detect the accuracy of positioning between the fixed mold 2 and the movable mold 3, and prevent the tilt between the guide column 8 and the jack under long-term pressing from affecting the quality of the slippers.

[0029] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

[0030] The above is only a preferred specific implementation method of the embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. An EVA foam slipper mold, comprising a mold frame (1), characterized in that: The inner cavity of the mold frame (1) is fixedly installed with a fixed mold (2), the upper surface of the fixed mold (2) is slidably connected with a movable mold (3), the upper surface of the movable mold (3) is fixedly installed with a first limiting rod (4), the top bottom wall of the mold frame (1) is fixedly installed with a first cylinder (5), the top bottom wall of the mold frame (1) is fixedly installed with a blanking assembly (6), the inner cavity of the fixed mold (2) is provided with a demoulding assembly (7), the four corners of the lower surface of the movable mold (3) are fixedly installed with guide columns (8), the bottom inner cavity of the movable mold (3) is provided with a foot mold (9), the upper surface of the fixed mold (2) is provided with a film cavity (10), the bottom end of the mold frame (1) is provided with an electric heating pipe, and the electric heating pipe is located below the fixed mold (2); The demoulding assembly (7) comprises a demoulding frame (71), a first clamping rod (72) is fixedly mounted on the upper surface of the demoulding frame (71), a second limiting rod (73) is fixedly mounted on the inner wall of the fixed mold (2), flexible demoulding mechanisms (74) are provided at both ends of the demoulding frame (71), positioning mechanisms (75) are provided at both ends of the demoulding frame (71), a connecting bar (76) is fixedly mounted in the inner cavity of the demoulding frame (71), there are two connecting bars (76), both ends of the connecting bar (76) are provided with flexible rods (77), and both ends of the connecting bar (76) are provided with alarm mechanisms (78).

2. An EVA foam slipper mold according to claim 1, characterized in that: The inner cavity of the first cylinder (5) is slidably connected to a first piston rod, the upper surface of the movable mold (3) is fixedly connected to the first piston rod, the first limiting rod (4) is slidably connected to the mold frame (1), the upper surface of the fixed mold (2) is provided with a socket, the guide column (8) and the socket are plugged together, and when the fixed mold (2) and the movable mold (3) are engaged, the foot mold (9) is located in the inner cavity of the membrane cavity (10), and one membrane cavity (10) has two flexible rods (77). The upper surface of the movable mold (3) is provided with an injection hole, the demoulding frame (71) and the second limiting rod (73) are slidably connected, and the demoulding frame (71) and the inner cavity of the fixed mold (2) are slidably connected.

3. The EVA foam slipper mold according to claim 1, characterized in that: The flexible demoulding mechanism (74) includes a connecting frame (741), the inner cavities at both ends of the connecting frame (741) are slidably connected to a first slide bar (742), one end of the first slide bar (742) is fixedly mounted with a clamping block (743), the outer surface of the first slide bar (742) is sleeved with a first spring (744), the lower surface of the movable mold (3) is fixedly mounted with a connecting rod (745), the bottom end of the connecting rod (745) is fixedly mounted with a first fixing bar (746), and the first fixing The two ends of the strip (746) are rotatably connected to pressure rods (747), the connecting rod (745) is located in the middle of the connecting frame (741), the clamping block (743) and the connecting frame (741) are slidably connected, and the clamping block (743) has inclined surfaces on both upper and lower sides near the middle of the connecting frame (741). When the fixed mold (2) and the movable mold (3) are engaged, the pressure rod (747) squeezes the inclined surface of the clamping block (743), and the connecting frame (741) and the demoulding frame (71) are fixedly connected.

4. The EVA foam slipper mold according to claim 3, characterized in that: The positioning mechanism (75) includes a limiting frame (751), the outer surface of the limiting frame (751) is provided with a first button (752), the outer surface of the limiting frame (751) is provided with a slide groove (753), the outer surface of the demoulding frame (71) is slidably connected to a floating plate (754), the outer surface of the floating plate (754) is fixedly installed with a second slide rod (755), the second slide rod (755) and the slide groove (753) are slidably connected, the outer surface of the second slide rod (755) is sleeved with a gasket (756), the upper surface of the floating plate (754) is provided with a groove (757), the lower surface of the first fixing bar (746) is fixedly provided with a positioning rod (758), the middle part of the positioning rod (758) and the floating plate (754) are aligned, A first alarm (759) is fixedly mounted on the outer surface of the demoulding frame (71), a second spring (7510) is sleeved on the outer surface of the second slide bar (755), the second spring (7510) is located between the floating plate (754) and the gasket (756), the gasket (756) and the inner wall of the limiting frame (751) are slidably connected, the first button (752) and the first alarm (759) are electrically connected, and pressing the first button (752) controls the first alarm (759) to sound an alarm, the limiting frame (751) and the demoulding frame (71) are fixedly connected, there is a gap between the end of the second slide bar (755) away from the floating plate (754) and the first button (752), and the height of the second slide bar (755) and the first button (752) are flush.

5. The EVA foam slipper mold according to claim 1, characterized in that: The flexible rod (77) includes a sleeve rod (771), the sleeve rod (771) and the connecting strip (76) are fixedly connected, the inner cavity of the sleeve rod (771) is slidably connected to an elastic rod (772), the top end of the elastic rod (772) is fixedly mounted with a demoulding plate (773), the demoulding plate (773) and the inner cavity of the membrane cavity (10) form a whole, the bottom end of the elastic rod (772) is fixedly mounted with a second fixing strip (774), the inner wall of the second fixing strip (774) is fixedly mounted with a second fixing strip (774). Three sliding rods (775), the outer surface of the third sliding rod (775) is sleeved with a third spring (776), both ends of the sleeve rod (771) are fixedly installed with limit blocks (777), the third spring (776) is located between the second fixed bar (774) and the limit block (777), the second fixed bar (774) and the sleeve rod (771) are slidably connected, the upper surface of the connecting bar (76) is provided with a through hole, and the third sliding rod (775) and the connecting bar (76) are slidably connected through the through hole.

6. The EVA foam slipper mold according to claim 5, characterized in that: The alarm mechanism (78) includes a connecting frame (781), the connecting frame (781) and the connecting bar (76) are fixedly connected, the outer surface of the connecting frame (781) is rotatably connected to a second threaded rod (782), the inner cavity of the connecting frame (781) is slidably connected to a slider (783), the second threaded rod (782) and the slider (783) are connected by threads, the outer surface of the slider (783) is provided with a slot (784), the bottom end of the elastic rod (772) is fixedly mounted with an alarm frame (785), the alarm frame (785) and the sleeve rod (771) are slidably connected, the inner cavity of the alarm frame (785) is slidably connected to a second clamping rod (786), the inner cavity of the second clamping rod (786) is rotatably connected to a rolling ball (787), and one end of the second clamping rod (786) is sleeved with a fourth spring (788 ), a pressing block (789) is fixedly mounted on the outer surface of the second card rod (786), the pressing block (789) and the inner cavity of the alarm frame (785) are slidably connected, the fourth spring (788) is located between the inner wall of the alarm frame (785) and the pressing block (789), a second alarm (7810) is fixedly mounted on the outer surface of the alarm frame (785), a second button (7811) is provided on the outer surface of the alarm frame (785), the second button (7811) and the second alarm (7810) are electrically connected, and pressing the second button (7811) controls the second alarm (7810) to sound an alarm, the rolling ball (787) and the slider (783) are tightly fitted, and when the second card rod (786) is located in the inner cavity of the card slot (784), the pressing block (789 presses the second button (7811).

7. The EVA foam slipper mold according to claim 1, characterized in that: The blanking assembly (6) includes a material box (61), a connecting block (62) is fixedly installed on the outer surface of the material box (61), the connecting block (62) is fixedly connected to the top and bottom walls of the mold frame (1), a limit frame (63) is fixedly installed on the upper surface of the material box (61), an adjustment frame (64) is provided below the limit frame (63), an adjustment mechanism (65) is fixedly installed on the upper surface of the material box (61), the bottom end of the adjustment mechanism (65) is fixedly connected to the adjustment frame (64), a quantitative mechanism (66) is slidably connected to the inner cavity of the adjustment frame (64), and a second cylinder (67) is provided on the upper surface of the adjustment frame (64), and the second cylinder ( 67) is slidably connected to a second piston rod, a discharge port (68) is provided at the bottom end of the material box (61), and there are two discharge ports (68), an outer surface of the regulating frame (64) is provided with a feed opening (69), the bottom end of the feed opening (69) is sleeved with a material guide tube (610), the bottom end of the material guide tube (610) and the upper surface of the movable mold (3) are sleeved with an injection hole, there are two discharge ports (68), and the spacing between the two discharge ports (68) and the two feed openings (69) is equal, the discharge ports (68) and the discharge ports (68) are staggered, there are two quantitative mechanisms (66), and a pull rod (611) is provided between the quantitative mechanisms (66).

8. The EVA foam slipper mold according to claim 7, characterized in that: The regulating mechanism (65) comprises a fixed block (651), the inner cavity of the fixed block (651) is rotatably connected to a first threaded rod (652), the lower surface of the fixed block (651) is slidably connected to a driving block (653), the outer surface of the driving block (653) is fixedly mounted with a driving rod (654), the four corners of the lower surface of the fixed block (651) are fixedly mounted with a storage rod (655), the inner cavity of the storage rod (655) is slidably connected to a lifting rod (656), and the lifting rod (656) is fixedly mounted on the outer surface of the driving block (653). A lifting plate (657) is fixedly mounted on the bottom end of the lowering rod (656), a driving groove (658) is provided on the outer surface of the lifting plate (657), the driving groove (658) is tilted, the driving rod (654) and the driving groove (658) are slidably connected, the fixed block (651) and the lower surface of the material box (61) are fixedly connected, the lifting plate (657) and the surface of the adjustment frame (64) are fixedly connected, and the driving block (653) and the first threaded rod (652) are connected by threads.

9. The EVA foam slipper mold according to claim 8, characterized in that: The quantitative mechanism (66) comprises a first material box (661), the inner cavity of the first material box (661) is slidably connected to the second material box (662), the upper surface of the second material box (662) is fixedly connected to a shielding plate (663), and the outer surface of the second material box (662) is slidably connected to a metering rod (664).

10. The EVA foam slipper mold according to claim 9, characterized in that: The pull rod (611) fixedly connects the two first material boxes (661), the first material box (661) and the adjustment frame (64) are slidably connected, the second material box (662) and the limit frame (63) are slidably connected, the first material box (661) and the second material box (662) are both provided with a connecting hole, the upper surface of the shielding plate (663) and the lower surface of the material box (61) are tightly fitted, and the second piston rod is fixedly connected to the outer surface of one of the first material boxes (661).

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