Rapid cooling structure of eva foaming mold

Abstract

The utility model provides a kind of quick cooling structure of eva foaming mould, belong to mechanical technical field.It has solved the problem of low efficiency of existing mould work.This quick cooling structure of eva foaming mould includes frame body, and frame body inside is equipped with lower mould and upper mould, and lower mould is fixed with frame body, and lower mould is connected with driving mechanism up and down activity;Frame body inside is equipped with cooling box, and frame body back is provided with circulation pipeline, and lower mould and upper mould inside are all set with cooling waterway, and the waterway in lower mould and upper mould is respectively provided with water inlet and water outlet, and lower mould and upper mould inside waterway water inlet and water outlet are all connected with cooling box by circulation pipeline.The utility model can improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing technology, and in particular to a rapid cooling structure for EVA foaming molds. Background Technology

[0002] With the widespread use of EVA material as a shoe material, items made from EVA material are gradually becoming more popular.

[0003] EVA foam boards have advantages such as shock resistance, heat insulation, cushioning, moisture resistance, antibacterial and waterproof properties, and resistance to chemical pollution, and are therefore widely used in various fields. For example, they can be used to make packaging gaskets, as well as building materials for civil engineering, etc. During the production of EVA foam boards, molten EVA foam material is usually injected into a mold and then cooled and shaped.

[0004] However, the existing technology has the following technical problems: Although the existing technology can realize one-time injection molding of complex EVA articles, the high temperature of the liquid raw material means that it cannot be solidified in a short time, which increases the working time, reduces the working efficiency, and cannot meet the user's needs. Therefore, this application proposes a rapid cooling structure for EVA foaming mold, and provides a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0005] Therefore, it is necessary to provide a rapid cooling structure for EVA foaming molds to address the aforementioned technical problems. Through the structural design of the cooling box and circulation pipeline, the device can continuously supply circulating water to the water channels of the lower and upper molds to reduce their temperature. The cooling box further cools the circulating cooling water, thereby enabling the product to solidify more quickly, reducing production time, and improving production efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A rapid cooling structure for EVA foaming molds, which is applied to the rapid cooling of EVA foaming molds.

[0007] The rapid cooling structure of the EVA foaming mold specifically includes: The frame has a lower mold and an upper mold arranged parallel to each other inside the frame. The lower mold is fixedly connected to the frame and is movably connected up and down by a drive mechanism. A cooling box is provided at the bottom of the inner side of the frame, and a circulation pipe is provided on the back of the frame. Cooling water passages are provided inside the lower mold and the upper mold. The water passages inside the lower mold and the upper mold are respectively provided with water inlets and water outlets. The water inlets and water outlets inside the lower mold and the upper mold are connected to the cooling box through circulation pipes. The circulation pipeline includes a diversion pipe assembly, a circulation pump, an inlet pipe, and a return pipe. The diversion pipe assembly and the circulation pump are both fixedly connected to the cooling box. The input end of the circulation pump extends into the cooling box, and the output end of the circulation pump is connected to the diversion pipe assembly. One end of the inlet pipe is connected to the diversion pipe assembly, and the other end of the inlet pipe is connected to the water inlet in the lower mold and the upper mold. One end of the return pipe is connected to the cooling box, and the other end of the return pipe is connected to the water outlet in the lower mold and the upper mold.

[0008] As a preferred embodiment of the rapid cooling structure for the EVA foaming mold provided by this utility model, the diversion pipe assembly includes a diversion pipe body, which is fixedly connected to the cooling box via a fixing bracket. One end of the diversion pipe body is connected to the output end of the circulating pump via a connecting hose. The diversion pipe body is provided with four diversion branch pipes. The number of liquid inlet pipes is four, and one end of each of the four liquid inlet pipes is detachably and sealed to the four diversion branch pipes. The other end of two of the liquid inlet pipes is connected to the water inlet of the lower mold water circuit, and the other end of the other two liquid inlet pipes is connected to the water inlet of the upper mold water circuit. The number of return pipes is four, and one end of each of the four return pipes is connected to the cooling box. The other end of two of the return pipes is connected to the water outlet of the lower mold water circuit, and the other end of the other two return pipes is connected to the water outlet of the upper mold water circuit.

[0009] As a preferred embodiment of the rapid cooling structure for the EVA foaming mold provided by this utility model, an inspection cover is detachably fixed at the end of the diversion pipe away from the connecting hose.

[0010] As a preferred embodiment of the rapid cooling structure of the EVA foaming mold provided by this utility model, each of the branch pipes is provided with a control valve for controlling the closure of the passage of each branch pipe.

[0011] As a preferred embodiment of the rapid cooling structure for the EVA foaming mold provided by this utility model, the front end of the cooling box is provided with a water exchange interface and a drain interface, and both the water exchange interface and the drain interface are provided with a hand valve.

[0012] In a preferred embodiment of the rapid cooling structure for the EVA foaming mold provided by this utility model, the driving mechanism includes two driving rods located on both sides of the inner wall of the frame. The two driving rods are vertically arranged and rotatably connected to the frame. The upper and lower parts of the two driving rods are connected via a transmission assembly. One end of one driving rod is equipped with a driving motor, the output end of which is fixedly connected to the driving rod and the driving motor is fixedly connected to the frame. A lifting beam is horizontally arranged between the two driving rods, fixedly connected to the top of the upper mold, and the end of the lifting beam is threadedly connected to the driving rod at the same end.

[0013] As a preferred embodiment of the rapid cooling structure of the EVA foaming mold provided by this utility model, each of the drive rods is provided with a movable arm one and a movable arm two on its side. The ends of the movable arm one and the movable arm two on the same side that are close to each other are rotatably connected by a connecting seat. The end of the movable arm one that is away from the movable arm two is threadedly connected to the drive rod. The end of the movable arm two that is away from the movable arm one is fixedly connected to the frame. The drive rod is rotatably connected to the movable arm two. A push rod is laterally fixedly connected between the two connecting seats.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The rapid cooling structure for EVA foaming molds provided by this utility model, through the combined design of the cooling box and circulation pipeline, enables the device to continuously supply circulating water to the water channels of the lower and upper molds to reduce their temperature. The cooling box further cools the circulating cooling water, thereby enabling the product to solidify more quickly, reducing production time and improving production efficiency.

[0015] The rapid cooling structure of the EVA foaming mold provided by this utility model, through the structural design of the drive mechanism, can realize the steps of opening and closing the lower mold and the upper mold. During the mold opening and closing process, it can drive the first movable arm, the second movable arm, and the push rod to move synchronously. Thus, the push rod can push the liquid inlet pipe and the return pipe connected to the upper mold to move outward, avoiding the phenomenon of the liquid inlet pipe and the return pipe being clamped during the mold closing process. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1A schematic diagram of the overall structure of the rapid cooling structure for the EVA foaming mold provided by this utility model; Figure 2 A front view of the overall structure of the rapid cooling structure for the EVA foaming mold provided by this utility model; Figure 3 A schematic diagram of the rapid cooling structure drive mechanism for the EVA foaming mold provided by this utility model; Figure 4 A schematic diagram of the rapid cooling structure circulation pipeline for the EVA foaming mold provided by this utility model; Figure 5 A schematic diagram of the rapid cooling structure of the manifold assembly for the EVA foaming mold provided by this utility model; Figure 6 This is a schematic diagram of the water exchange interface and drainage interface of the rapid cooling structure of the EVA foaming mold provided by this utility model.

[0018] The markings in the diagram are explained as follows: 1. Frame; 2. Lower mold; 3. Upper mold; 4. Drive mechanism; 5. Cooling box; 6. Circulation pipeline; 7. Drive rod; 8. Drive motor; 9. Transmission assembly; 10. Stabilizing guide frame; 11. Lifting beam; 12. Movable arm one; 13. Movable arm two; 14. Push rod; 15. Diverter pipe assembly; 16. Circulation pump; 17. Inlet pipe; 18. Return pipe; 19. Diverter pipe body; 20. Connecting hose; 21. Fixing frame; 22. Inspection cover; 23. Diverter branch pipe; 24. Control valve; 26. Water exchange interface; 27. Drain interface. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] As in the background art, although existing technologies can achieve one-time injection molding of complex-shaped EVA items, the high temperature of the liquid raw material means it cannot solidify in a short time, which increases working time, reduces work efficiency, and cannot meet the user's needs.

[0021] To solve this technical problem, this utility model provides a rapid cooling structure for EVA foaming molds, which is applied to the rapid cooling of EVA foaming molds.

[0022] For details, please refer to Figures 1-3 The rapid cooling structure of the EVA foaming mold specifically includes: The frame 1 has a lower mold 2 and an upper mold 3 arranged in parallel inside the frame 1. The lower mold 2 is fixedly connected to the frame 1 and is movable up and down through a drive mechanism 4. A cooling box 5 is installed at the bottom inside the frame 1, and a circulation pipe 6 is installed on the back of the frame 1. Cooling water channels are opened inside the lower mold 2 and the upper mold 3. The water channels in the lower mold 2 and the upper mold 3 are respectively equipped with water inlets and water outlets. The water inlets and water outlets in the lower mold 2 and the upper mold 3 are connected to the cooling box 5 through the circulation pipe 6. The circulation pipeline 6 includes a diversion pipe assembly 15, a circulation pump 16, an inlet pipe 17, and a return pipe 18. Both the diversion pipe assembly 15 and the circulation pump 16 are fixedly connected to the cooling box 5. The input end of the circulation pump 16 extends into the cooling box 5, and the output end of the circulation pump 16 is connected to the diversion pipe assembly 15. One end of the inlet pipe 17 is connected to the diversion pipe assembly 15, and the other end of the inlet pipe 17 is connected to the water inlet in the lower mold 2 and the upper mold 3. One end of the return pipe 18 is connected to the cooling box 5, and the other end of the return pipe 18 is connected to the water outlet in the lower mold 2 and the upper mold 3.

[0023] The rapid cooling structure for EVA foaming molds provided by this utility model, through the structural design of the cooling box 5 and the circulation pipeline 6, enables the device to continuously supply circulating water to the water channels of the lower mold 2 and the upper mold 3 to reduce the temperature of the lower mold 2 and the upper mold 3. The cooling box 5 cools the circulating cooling water, thereby enabling the product to solidify more quickly, reducing the production time required and improving production efficiency.

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] Example 1: Please refer to Figures 1-3 A rapid cooling structure for an EVA foaming mold, comprising: The frame 1 has a lower mold 2 and an upper mold 3 arranged in parallel inside the frame 1. The lower mold 2 is fixedly connected to the frame 1 and is movable up and down through a drive mechanism 4. Furthermore, in order to cool down the lower mold 2 and the upper mold 3, a cooling box 5 is provided at the bottom of the inner side of the frame 1, and a circulation pipe 6 is provided on the back of the frame 1. Cooling water channels are provided inside the lower mold 2 and the upper mold 3. The water channels in the lower mold 2 and the upper mold 3 are respectively provided with water inlets and water outlets. The water inlets and water outlets in the lower mold 2 and the upper mold 3 are connected to the cooling box 5 through the circulation pipe 6. Specifically, the circulation pipeline 6 includes a diversion pipe assembly 15, a circulation pump 16, an inlet pipe 17, and a return pipe 18. Both the diversion pipe assembly 15 and the circulation pump 16 are fixedly connected to the cooling box 5. The input end of the circulation pump 16 extends into the cooling box 5, and the output end of the circulation pump 16 is connected to the diversion pipe assembly 15. One end of the inlet pipe 17 is connected to the diversion pipe assembly 15, and the other end of the inlet pipe 17 is connected to the water inlet in the lower mold 2 and the upper mold 3. One end of the return pipe 18 is connected to the cooling box 5, and the other end of the return pipe 18 is connected to the water outlet in the lower mold 2 and the upper mold 3.

[0026] It can be seen that by starting the circulating pump 16, the circulating water in the cooling box 5 can be diverted through the diversion pipe group 15. The diverted circulating water is transported to the lower mold 2 and the upper mold 3 through the liquid inlet pipe 17. After entering the water passage inside the lower mold 2 and the upper mold 3, the circulating water undergoes heat exchange. Finally, the circulating water with heat flows back to the cooling box 5 through the return pipe 18, thus completing the cooling of the lower mold 2 and the upper mold 3.

[0027] Specifically, the diversion pipe assembly 15 includes a diversion pipe body 19, which is fixedly connected to the cooling box 5 via a fixing bracket 21. One end of the diversion pipe body 19 is connected to the output end of the circulating pump 16 via a connecting hose 20. The diversion pipe body 19 is provided with four diversion branch pipes 23 and four liquid inlet pipes 17. One end of each of the four liquid inlet pipes 17 is detachably and sealed to the four diversion branch pipes 23. The other end of two of the liquid inlet pipes 17 is connected to the water inlet of the lower mold 2 water channel, and the other end of the other two liquid inlet pipes 17 is connected to the water inlet of the upper mold 3 water channel. There are four return pipes 18, one end of each of the four return pipes 18 is connected to the cooling box 5. The other end of two of the return pipes 18 is connected to the water outlet of the lower mold 2 water channel, and the other end of the other two return pipes 18 is connected to the water outlet of the upper mold 3 water channel.

[0028] It can be seen that the circulating water output by the circulating pump 16 enters the interior of the diversion pipe body 19 through the connecting hose 20, and is diverted through multiple diversion branch pipes 23. The connecting hose 20, the circulating pump 16, and the diversion pipe body 19 are all detachable, so the connecting hose 20 can be removed and replaced, which facilitates the cleaning or maintenance of the circulating pump 16 and the diversion pipe body 19.

[0029] Furthermore, in order to realize the mold opening and closing steps of the lower mold 2 and the upper mold 3, the drive mechanism 4 includes two drive rods 7. The two drive rods 7 are located on both sides of the inner wall of the frame 1. The two drive rods 7 are vertically arranged and rotatably connected to the frame 1. The upper and lower parts of the two drive rods 7 are connected by a transmission assembly 9. One end of one drive rod 7 is provided with a drive motor 8. The output end of the drive motor 8 is fixedly connected to the drive rod 7. The drive motor 8 is fixedly connected to the frame 1. A lifting beam 11 is arranged horizontally between the two drive rods 7. The lifting beam 11 is fixedly connected to the top of the upper mold 3. The end of the lifting beam 11 is threadedly connected to the drive rod 7 at the same end.

[0030] It can be seen that by starting the drive motor 8, the drive rod 7 can be driven to rotate. The two drive rods 7 are connected by the transmission component 9, so that when one drive rod 7 rotates, the other drive rod 7 follows. The lifting beam 11 is threadedly connected to the drive rod 7, so that when the drive rod 7 rotates, the lifting beam 11 can drive the upper mold 3 to move up and down, realizing the steps of opening and closing the mold. In order to improve the stability of the movement of the upper mold 3, a stabilizing guide 10 is fixedly connected to the bottom of the upper mold 3. The stabilizing guide 10 extends to the outer side of the top of the frame 1 and is slidably connected to the frame 1.

[0031] Example 2: The rapid cooling structure of the EVA foaming mold provided in Example 1 is further optimized, specifically, as follows: Figure 3 As shown, each drive rod 7 is provided with a movable arm 12 and a movable arm 23 on its side. The ends of the movable arm 12 and the movable arm 23 on the same side that are close to each other are rotatably connected by a connecting seat. The end of the movable arm 12 that is away from the movable arm 23 is threadedly connected to the drive rod 7. The end of the movable arm 23 that is away from the movable arm 12 is fixedly connected to the frame 1. The drive rod 7 is rotatably connected to the movable arm 23. A push rod 14 is laterally fixedly connected between the two connecting seats. Through the above structural design, when the lifting beam 11 moves down to drive the upper mold 3 and the lower mold 2 to close, the movable arm 12 and the movable arm 2 approach each other and push the connecting seat to drive the push rod 14 to move towards the liquid inlet pipe 17 and the return pipe 18 connected to the upper mold 3, thereby pushing them away and avoiding accidental clamping.

[0032] Example 3: The rapid cooling structure of the EVA foaming mold provided in Example 1 is further optimized, specifically, as follows: Figure 5 and Figure 6 As shown, each branch pipe 23 is equipped with a control valve 24 for controlling the closure of the flow path of each branch pipe 23. Furthermore, in order to realize the replacement of circulating water, the front end of the cooling box 5 is equipped with a water exchange interface 26 and a drain interface 27, and both the water exchange interface 26 and the drain interface 27 are equipped with a manual valve.

[0033] Through the above structural design, the flow control valve 24 can control the closure of the branch pipe 23, thereby adjusting the flow of circulating water as needed. The circulating water in the cooling tank 5 can be replaced through the water exchange interface 26 and the drain interface 27.

[0034] Example 4: The rapid cooling structure of the EVA foaming mold provided in Example 1 is further optimized, specifically, as follows: Figure 5 As shown, a maintenance cover 22 is detachably fixed to the end of the shunt tube 19 away from the connecting hose 20.

[0035] With the above structural design, the inside of the diversion pipe 19 can be cleaned by removing the inspection cover 22, and the removal and cleaning of the connecting hose 20 is more convenient.

Claims

1. A rapid cooling structure for an EVA foaming mold, characterized in that, include: The frame has a lower mold and an upper mold arranged parallel to each other inside the frame. The lower mold is fixedly connected to the frame and is movably connected up and down by a drive mechanism. A cooling box is provided at the bottom of the inner side of the frame, and a circulation pipe is provided on the back of the frame. Cooling water passages are provided inside the lower mold and the upper mold. The water passages inside the lower mold and the upper mold are respectively provided with water inlets and water outlets. The water inlets and water outlets inside the lower mold and the upper mold are connected to the cooling box through circulation pipes. The circulation pipeline includes a diversion pipe assembly, a circulation pump, an inlet pipe, and a return pipe. The diversion pipe assembly and the circulation pump are both fixedly connected to the cooling box. The input end of the circulation pump extends into the cooling box, and the output end of the circulation pump is connected to the diversion pipe assembly. One end of the inlet pipe is connected to the diversion pipe assembly, and the other end of the inlet pipe is connected to the water inlet in the lower mold and the upper mold. One end of the return pipe is connected to the cooling box, and the other end of the return pipe is connected to the water outlet in the lower mold and the upper mold.

2. The rapid cooling structure for the EVA foaming mold according to claim 1, characterized in that, The diversion pipe assembly includes a diversion pipe body, which is fixedly connected to the cooling box via a fixing bracket. One end of the diversion pipe body is connected to the output end of the circulating pump via a connecting hose. The diversion pipe body is provided with four diversion branch pipes. There are four liquid inlet pipes, and one end of each of the four liquid inlet pipes is detachably and sealed to one of the four diversion branch pipes. The other end of two of the liquid inlet pipes is connected to the water inlet of the lower mold water circuit, and the other end of the other two of the liquid inlet pipes is connected to the water inlet of the upper mold water circuit. There are four return pipes, and one end of each of the four return pipes is connected to the cooling box. The other end of two of the return pipes is connected to the water outlet of the lower mold water circuit, and the other end of the other two of the return pipes is connected to the water outlet of the upper mold water circuit.

3. The rapid cooling structure of the EVA foaming mold according to claim 2, characterized in that, The end of the shunt tube away from the connecting hose is detachably fixed with an inspection cover.

4. The rapid cooling structure for the EVA foaming mold according to claim 2, characterized in that, Each of the branch pipes is equipped with a control valve for controlling the closure of the passage of each branch pipe.

5. The rapid cooling structure for the EVA foaming mold according to claim 1, characterized in that, The front end of the cooling box is equipped with a water exchange interface and a drain interface, and both the water exchange interface and the drain interface are equipped with a manual valve.

6. The rapid cooling structure for the EVA foaming mold according to claim 2, characterized in that, The driving mechanism includes two driving rods located on opposite sides of the inner wall of the frame. The two driving rods are vertically aligned and rotatably connected to the frame. The upper and lower parts of the two driving rods are connected via a transmission assembly. One end of one driving rod is equipped with a driving motor, the output end of which is fixedly connected to the driving rod and the frame. A lifting beam is horizontally positioned between the two driving rods, fixedly connected to the top of the upper mold. The end of the lifting beam is threadedly connected to the driving rod at the same end.

7. The rapid cooling structure for the EVA foaming mold according to claim 6, characterized in that, Each of the drive rods is provided with a movable arm one and a movable arm two on its side. The ends of the movable arm one and the movable arm two on the same side that are close to each other are rotatably connected by a connecting seat. The end of the movable arm one that is away from the movable arm two is threadedly connected to the drive rod. The end of the movable arm two that is away from the movable arm one is fixedly connected to the frame. The drive rod is rotatably connected to the movable arm two. A push rod is laterally fixedly connected between the two connecting seats.

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