Rapid cooling demoulding device based on liquid silicone mold

Abstract

The present invention belongs to the field of demoulding technology, and specifically relates to a rapid cooling demoulding device based on a liquid silicone mold, which includes a mold and a rapid cooling demoulding mechanism, wherein the rapid cooling demoulding mechanism includes a cooling chamber, air outlet holes are provided on the front and rear sides of the cooling chamber, an air inlet is provided on the bottom, and the air inlet is connected to an external air source hose, and a vortex cooler is provided at the connection; a slide groove is provided at the bottom of the mold, the cooling chamber is slidably connected in the slide groove, a uniform cooling part is fixed on the left side of the cooling chamber, and the uniform cooling part includes a fixed chamber, a threaded plate, a screw, a conveying wheel, a rotating shaft, a rocker, a threaded rod and a guide wheel; the fixed chamber is fixedly installed on the left side of the mold, and the device solves the current problem that waste plastics cannot be recycled and reused, and the recycled plastic is formed into liquid injection molding into liquid silicone, and the liquid silicone cannot be quickly separated without affecting the molding quality.

Description

Technical Field

[0001] The invention belongs to the technical field of demoulding, and in particular relates to a rapid cooling demoulding device based on a liquid silicone mold. Background Art

[0002] As the consumption of plastic products continues to increase, the amount of waste plastics is also increasing. my country's waste plastics mainly include plastic films, plastic yarns and woven products, foam plastics, plastic packaging boxes and containers, daily plastic products, plastic bags and agricultural mulch films. These waste plastics can be recycled and used in the manufacture of liquid silicone rubber.

[0003] Currently, molds made of liquid silicone rely solely on water cooling or air cooling, which can lead to uneven cooling or excessively fast cooling. This causes the liquid plastic to solidify before it is completely still after flowing into the mold, resulting in low molding quality and defective products. Cooling and demolding cannot be precisely controlled, and this phenomenon has become a problem that needs to be urgently addressed by researchers in this field. Summary of the Invention

[0004] The object of the present invention is to provide a rapid cooling demoulding device based on a liquid silicone mold to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a rapid cooling demolding device based on a liquid silicone mold, comprising a mold and a rapid cooling demolding mechanism, the rapid cooling demolding mechanism comprising a cooling chamber, the front and rear sides of the cooling chamber are provided with air outlets, the bottom is provided with an air inlet, and the air inlet is connected to an external air source hose, and a vortex cooler is provided at the connection; a slide groove is provided at the bottom of the mold, the cooling chamber is slidably connected to the slide groove, and a uniform cooling part is fixed on the left side of the cooling chamber.

[0006] The present invention further describes that the uniform cooling part includes a fixed cavity, a threaded plate, a screw, a conveying wheel, a rotating shaft, a rocker, a threaded rod and a guide wheel; the fixed cavity is fixedly installed on the left side of the mold, the threaded plate is fixedly installed on the inner wall of the fixed cavity, and a threaded hole is provided in the middle, the screw is threadedly connected to the threaded hole, and the right end is connected to the cooling cavity bearing, a protrusion is provided on the left side of the screw, a groove is provided inside the conveying wheel, and is slidably connected to the protrusion of the screw through the groove, the left side of the conveying wheel is connected to the left bearing of the inner wall of the fixed cavity, the rotating shaft is connected to the left side of the fixed cavity, and a threaded hole is provided inside, and threaded rod one is threadedly connected to the threaded hole of the rotating shaft, the guide wheel is fixedly installed on the right end of threaded rod one, and is tightly fitted with the conveying wheel, and the rocker is fixedly installed on the left end of the rotating shaft.

[0007] The present invention further describes that a hole is provided in the middle of the rocking wheel, and a threaded rod 1 is inserted into the hole. The outer side of the threaded rod 1 is threadedly connected to a nut, and the rocking wheel is fixed by the nut.

[0008] The present invention further describes that the conveying wheel is conical in shape, and the conical surface is parallel to the outer surface of the guide wheel.

[0009] The present invention further describes that the conveying wheel includes a left wheel and a right wheel, the left wheel is connected to the inner wall bearing of the fixed cavity, and a threaded groove is opened on the right side, and a threaded sleeve is fixed on the left side of the right wheel, and is connected to the threaded groove of the left wheel through the threaded sleeve.

[0010] The present invention further describes that a square hole is provided on the left side of the fixed cavity, and a square block is slidably connected in the square hole, the upper end bearing of the square block is connected to a threaded rod 2, and a threaded hole is also provided above the left side of the fixed cavity, and the threaded rod 2 is threadedly connected to the threaded hole above the left side of the fixed cavity.

[0011] The present invention further describes that an inclined groove is provided in the middle of the square block, and the rotating shaft bearing is installed in the inclined groove.

[0012] The present invention further describes that the surfaces of the conveying wheel and the guide wheel are both made of frosted PVC material, that is, the surfaces are made of polyvinyl chloride (PVC) material that has been frosted.

[0013] Compared with the existing technology, the present invention has the following beneficial effects: the present invention crushes, granulates and melts the recycled plastic to form liquid silicone, which is then injected into a mold for molding, thereby achieving the purpose of recycling and reuse. During the molding process, the vortex cooler generates low temperature, thereby quickly cooling the mold, accelerating the demoulding speed and increasing the output.

[0014] The cooling chamber used is small in size, and the material is absorbed. The cooling can be more concentrated, reducing the diffusion of cold air, thereby ensuring the low temperature effect and faster cooling speed. By moving the cooling chamber in the mold, the mold is fully cooled with high intensity, and the demoulding speed is greatly improved. The operation is simple, the structure is relatively simple, and the manufacturing cost is low. In addition, the moving speed of the cooling chamber can be freely adjusted according to the molding conditions of liquid silicone, thereby ensuring the cooling speed and improving the molding quality to the greatest extent.

[0015] When the length of the conveyor wheel is extended, the speed adjustment of the cooling chamber can be divided into two sections, one of which is maintained at a high speed and the other is maintained at a low speed. The speed adjustment accuracy is higher and the molding quality is higher. After there is a gap between the two, there is a window period in the adjustment process from high speed to low speed to avoid excessive speed adjustment when reaching the most stable state after adjusting to the intermediate speed, thereby affecting the adjustment efficiency. The speed adjustment accuracy can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a cross-sectional view of the present invention;

[0019] Figure 3 It is a front view of the present invention;

[0020] Figure 4 is an exploded view of the present invention;

[0021] Figure 5 It is a schematic diagram of the internal structure of the conveying wheel of the present invention;

[0022] Figure 6 This is a schematic diagram of the method of moving the cooling chamber of the present invention;

[0023] Figure 7 is a schematic diagram of embodiment 1 of the present invention;

[0024] Figure 8 is a schematic diagram of embodiment 2 of the present invention;

[0025] Figure 9 Schematic diagrams of Embodiment 3 and Embodiment 4 of the present invention;

[0026] In the figure: 1. mold; 11. slide; 2. cooling chamber; 3. fixed chamber; 31. threaded plate; 32. screw; 33. rotating shaft; 34. rocker; 35. threaded rod 1; 36. guide wheel; 37. left wheel; 38. right wheel; 381. threaded sleeve; 39. square block; 391. threaded rod 2. DETAILED DESCRIPTION

[0027] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] See also Figures 1-9The present invention provides a technical solution: a rapid cooling demoulding device based on a liquid silicone mold, comprising a mold 1 and a rapid cooling demoulding mechanism, wherein the rapid cooling demoulding mechanism comprises a cooling chamber 2, wherein the front and rear sides of the cooling chamber 2 are provided with air outlets, the bottom is provided with an air inlet, and the air inlet is connected to an external air source hose, and a vortex cooler is provided at the connection;

[0029] A chute 11 is provided at the bottom of the mold 1, and the cooling cavity 2 is slidably connected to the chute 11. A uniform cooling part is fixed on the left side of the cooling cavity 2;

[0030] The recycled plastic is crushed, granulated and melted to form liquid silicone, which is then injected into the mold 1 for molding to achieve the purpose of recycling and reuse. During the molding process, the external air source enters the hose through the vortex cooler and then enters the cooling chamber 2 through the hose. The compressed air with a certain pressure enters the vortex cooler and expands and accelerates. The air flow is divided into two air flows, one is a hot air flow and the other is a cold air flow. The hot air flow is discharged and the cold air flow enters the cooling chamber 2, generating a low temperature, thereby quickly cooling the mold 1, accelerating the demoulding speed and increasing the output.

[0031] The uniform cooling section includes a fixed cavity 3, a threaded plate 31, a screw 32, a conveying wheel, a rotating shaft 33, a rocker 34, a threaded rod 35 and a guide wheel 36;

[0032] The fixed cavity 3 is fixedly installed on the left side of the mold 1, the threaded plate 31 is fixedly installed on the inner wall of the fixed cavity 3, and a threaded hole is provided in the middle, the screw 32 is threadedly connected to the threaded hole, and the right end is connected to the bearing of the cooling cavity 2, a bump is provided on the left side of the screw 32, a groove is provided inside the conveying wheel, and it is slidably connected to the bump of the screw 32 through the groove, the left side of the conveying wheel is connected to the left bearing of the inner wall of the fixed cavity 3, the rotating shaft 33 is axially connected to the left side of the fixed cavity 3, and a threaded hole is provided inside, and the threaded rod 35 is threadedly connected to the threaded hole of the rotating shaft 33, the guide wheel 36 is fixedly installed on the right end of the threaded rod 35, and is tightly fitted with the conveying wheel, and the rocker wheel 34 is fixedly installed on the left end of the rotating shaft 33.

[0033] A hole is provided in the middle of the rocking wheel 34, and a threaded rod 35 is inserted into the hole. A nut is threadedly connected to the outer side of the threaded rod 35, and the rocking wheel 34 is fixed by the nut.

[0034] like Figure 6As shown, during the cooling process, the operator rotates the rocker 34, so that it drives the threaded rod 1 35 to rotate through the rotating shaft 33, and the threaded rod 1 35 drives the guide wheel 36 to rotate. The guide wheel 36 is in close contact with the conveying wheel, and the conveying wheel is driven to rotate by friction. The conveying wheel drives the screw 32 to rotate, so that the screw 32 moves to the right while rotating through the threaded hole of the threaded plate 31. The screw 32 slides in the groove of the conveying wheel through the protrusion on its left side to ensure smooth rotation, thereby pushing the cooling chamber 2 to move to the right. The cooling chamber 2 slides to the right in the chute 11, and the mold 1 is evenly cooled.

[0035] The cooling chamber 2 used is small in size, can absorb materials, and can be more concentrated in cooling, reducing the diffusion of cold air, thereby ensuring the low-temperature effect and faster cooling speed. By moving the cooling chamber 2 in the mold 1, the mold 1 is fully cooled with high intensity, the demoulding speed is greatly improved, the operation is simple, the structure is relatively simple, and the manufacturing cost is low.

[0036] The conveying wheel is conical in shape, and the conical surface is parallel to the outer surface of the guide wheel 36;

[0037] Example 1: Figure 7 As shown, in order to speed up the molding speed, if the moving speed of the cooling chamber 2 is too fast, the operator loosens the nut and rotates the threaded rod 35 so that it passes through the threaded hole of the rotating shaft 33 and moves to the right while rotating. At this time, the guide wheel 36 is driven to move to the right while rotating. The guide wheel 36 moves along the conical surface of the conveying wheel until it moves to the right side of the conveying wheel. The transmission ratio of the guide wheel 36 when driving the conveying wheel to rotate increases, and the speed of the conveying wheel decreases, thereby reducing the moving speed of the cooling chamber 2. As a result, the cooling chamber 2 can fully and strongly cool each part of the mold 1, thereby accelerating the cooling speed and the molding speed. In unit time, the cooling chamber 2 moves back and forth more times and the cooling speed is faster.

[0038] On the other hand, to improve the molding quality or to mold high-precision liquid silicone, the threaded rod 1 35 is rotated in the opposite direction to reduce the transmission ratio, thereby accelerating the movement speed of the cooling chamber 2, preventing the local temperature in the mold 1 from rapidly decreasing while the temperature in other locations cannot be quickly reduced, resulting in the liquid silicone in the local location being completely molded before it is fully still. This plays a role in ensuring the molding quality, cooling more evenly, and uniform cooling can be achieved by simply rotating the rocking wheel 34 forward and reverse, and the cooling speed will not be greatly affected.

[0039] According to the molding conditions of liquid silicone, the moving speed of the cooling chamber 2 can be freely adjusted, thereby ensuring the cooling speed and improving the molding quality to the greatest extent.

[0040] The conveying wheel includes a left wheel 37 and a right wheel 38. The left wheel 37 is connected to the inner wall bearing of the fixed cavity 3 and has a threaded groove on the right side. A threaded sleeve 381 is fixed to the left side of the right wheel 38 and is connected to the threaded groove of the left wheel 37 through the threaded sleeve 381.

[0041] Example 2: Figure 8 As shown, in order to lengthen the travel of the cooling chamber 2 to accommodate molds 1 of different lengths, the operator rotates the right wheel 38, causing it to rotate and move to the right in the threaded groove of the left wheel 37 through the threaded sleeve 381, thereby lengthening the travel of the screw 32. That is, a rapid cooling and demoulding mechanism is adopted, which can be adapted to different types of liquid silicone and molds 1. The manufacturing cost of the rapid cooling and demoulding mechanism is further reduced, and the scope of application is wide.

[0042] When the length of the conveying wheel is extended, the speed adjustment of the cooling chamber 2 can be divided into two sections, one of which is maintained at a high speed and the other is maintained at a low speed. The speed adjustment accuracy is higher and the molding quality is higher. After there is a gap between the two, there is a window period in the adjustment process from high speed to low speed to avoid excessive adjustment of the speed when it reaches the most stable state after adjusting to the intermediate speed, thereby affecting the adjustment efficiency. The speed adjustment accuracy can be greatly improved.

[0043] A square hole is provided on the left side of the fixed cavity 3, and a square block 39 is slidably connected in the square hole. The upper end bearing of the square block 39 is connected to the threaded rod 2 391. A threaded hole is also provided on the upper left side of the fixed cavity 3, and the threaded rod 2 391 is threadedly connected to the threaded hole on the upper left side of the fixed cavity 3.

[0044] An inclined slot is provided in the middle of the square block 39, and the bearing of the rotating shaft 33 is installed in the inclined slot;

[0045] Example 3: Figure 9 As shown, after the conveying wheel adjusts its length and the moving speed of the cooling chamber 2 is adjusted to a low moving speed, there is a position difference between the left wheel 37 and the right wheel 38. At this time, in order to ensure that the guide wheel 36 can fit tightly with the right wheel 38, the threaded rod 391 is rotated so that it moves upward while rotating through the threaded hole, thereby driving the square block 39 to slide along the inner wall of the square groove, thereby driving the guide wheel 36 to move upward until the guide wheel 36 fits tightly with the right wheel 38 to ensure friction, so that the cooling chamber 2 can move smoothly.

[0046] The surfaces of the conveying wheel and the guide wheel 36 are both made of frosted PVC, that is, the surface is made of polyvinyl chloride (PVC) material that has been frosted;

[0047] Example 4: Figure 9As shown, for the materials on the surface of the conveying wheel and the guide wheel 36, when the two rub against each other, the frosted PVC material on the surface will produce a certain amount of wear, resulting in a gap between the guide wheel 36 and the conveying wheel. At this time, the threaded rod 391 can be rotated to move the guide wheel 36 upward, thereby increasing the tightness between the guide wheel 36 and the conveying wheel to ensure the friction force, so that the cooling chamber 2 can move smoothly at all times, and can maximize the service life of the guide wheel 36 and the conveying wheel, achieve maximum utilization, and thus significantly reduce the cost of using the device.

[0048] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0049] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A rapid cooling demoulding device based on a liquid silicone mold, comprising a mold (1) and a rapid cooling demoulding mechanism, characterized in that: The rapid cooling and demoulding mechanism comprises a cooling cavity (2), wherein the cooling cavity (2) is provided with air outlet holes on both the front and rear sides, and an air inlet hole is provided at the bottom, and the air inlet hole is connected to an external air source hose, and a vortex cooler is provided at the connection point; The bottom of the mold (1) is provided with a slide groove (11), the cooling cavity (2) is slidably connected in the slide groove (11), and a uniform cooling portion is fixed on the left side of the cooling cavity (2), and the uniform cooling portion includes a fixed cavity (3), a threaded plate (31), a screw (32), a conveying wheel, a rotating shaft (33), a rocker (34), a threaded rod (35) and a guide wheel (36); The fixed cavity (3) is fixedly mounted on the left side of the mold (1), the threaded plate (31) is fixedly mounted on the inner wall of the fixed cavity (3), and a threaded hole is provided in the middle. The screw (32) is threadedly connected in the threaded hole, and the right end is connected to the bearing of the cooling cavity (2). A convex block is provided on the left side of the screw (32), and a groove is provided inside the conveying wheel, and the conveying wheel is slidably connected to the convex block of the screw (32) through the groove. The left side of the conveying wheel is connected to the left bearing of the inner wall of the fixed cavity (3), and the rotating shaft (33) is connected to the shaft. The guide wheel (36) is fixedly mounted on the right end of the threaded rod (35) and is tightly fitted with the conveying wheel. The rocker (34) is fixedly mounted on the left end of the rotating shaft (33). A hole is provided in the middle of the rocker (34), and the threaded rod (35) is inserted into the hole. A nut is threadedly connected to the outer side of the threaded rod (35), and the rocker (34) is fixedly mounted on the left end of the rotating shaft (33).

2. The rapid cooling demoulding device based on liquid silicone mold according to claim 1, characterized in that: The conveying wheel is in a conical shape, and the conical surface is parallel to the outer side surface of the guide wheel (36).

3. The rapid cooling demoulding device based on liquid silicone mold according to claim 2, characterized in that: The conveying wheel comprises a left wheel (37) and a right wheel (38); the left wheel (37) is connected to the inner wall bearing of the fixed cavity (3) and has a threaded groove on the right side; a threaded sleeve (381) is fixed on the left side of the right wheel (38) and is connected to the threaded groove of the left wheel (37) via the threaded sleeve (381).

4. The rapid cooling demoulding device based on liquid silicone mold according to claim 3, characterized in that: A square hole is provided on the left side of the fixed cavity (3), and a square block (39) is slidably connected in the square hole. The upper end bearing of the square block (39) is connected to a second threaded rod (391). A threaded hole is also provided on the upper left side of the fixed cavity (3), and the second threaded rod (391) is threadedly connected to the threaded hole on the upper left side of the fixed cavity (3).

5. The rapid cooling demoulding device based on liquid silicone mold according to claim 4, characterized in that: An oblique groove is provided in the middle of the square block (39), and the bearing of the rotating shaft (33) is installed in the oblique groove.

6. The rapid cooling demoulding device based on liquid silicone mold according to claim 5, characterized in that: The surfaces of the conveying wheel and the guide wheel (36) are both made of frosted PVC material, that is, the surfaces are made of polyvinyl chloride (PVC) material that has been frosted.

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