Rapid cooling type demolding device based on liquid silicone mold

Abstract

The invention belongs to the technical field of demolding, and particularly relates to a rapid cooling type demolding device based on a liquid silicone mold, the rapid cooling type demolding device comprises a mold and a rapid cooling demolding mechanism, the rapid cooling demolding mechanism comprises a cooling cavity, air outlet holes are formed in the front side and the rear side of the cooling cavity, and an air inlet hole is formed in the bottom of the cooling cavity; the air inlet is connected with an external air source hose, and a vortex cooler is arranged at the joint; a sliding groove is formed in the bottom of the mold, the cooling cavity is slidably connected into the sliding groove, and a uniform cooling part is fixed to the left side of the cooling cavity and comprises a fixed cavity, a threaded plate, a screw, a conveying wheel, a rotating shaft, a rocking wheel, a first threaded rod and a guide wheel. The device solves the problems that at present, waste plastic cannot be recycled, the recycled plastic forms liquid injection molding to form liquid silica gel, the liquid silica gel cannot be rapidly separated, and the forming quality is not affected.

Description

Technical Field

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

[0002] With the continuous increase in the consumption of plastic products, the amount of waste plastics is also increasing. The main types of waste plastics in China are plastic films, plastic filaments and woven products, foam plastics, plastic packaging boxes and containers, daily-use plastic products, plastic bags, and agricultural mulch films. These waste plastics can be recycled and used in the manufacture of liquid silicone after recovery;

[0003] At present, for molds made of liquid silicone, relying solely on water cooling or air cooling will encounter problems such as uneven cooling or too fast cooling speed, resulting in the liquid plastic solidifying before it is completely stationary after flowing into the mold, thus leading to low molding quality and defective products. For cooling demolding, precise control cannot be achieved, and this phenomenon has become an urgent problem for those in this field to solve. Summary of the Invention

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

[0005] To solve the above technical problems, the present invention provides the following technical solution: A rapid cooling demolding device based on a liquid silicone mold, including a mold and a rapid cooling demolding mechanism. The rapid cooling demolding mechanism includes a cooling cavity. Air outlet holes are provided on the front and rear sides of the cooling cavity, and an air inlet hole is provided at the bottom. The air inlet hole is connected to an external air source hose, and a vortex cooler is provided at the connection. A chute is provided at the bottom of the mold, and the cooling cavity is slidably connected in the chute. A uniform cooling part is fixed on the left side of the cooling cavity.

[0006] The present invention is further described as follows. The uniform cooling part includes a fixed cavity, a threaded plate, a screw rod, a conveying wheel, a rotating shaft, a rocking wheel, a first threaded rod, and a guide wheel. The fixed cavity is fixedly installed on the left side of the lower mold. The threaded plate is fixedly installed on the inner wall of the fixed cavity and has a threaded hole in the middle. The screw rod is threadedly connected in the threaded hole, and the right end is connected to the cooling cavity by a bearing. A convex block is provided on the left side of the screw rod. A groove is provided inside the conveying wheel, and it is slidably connected to the convex block of the screw rod through the groove. The left side of the conveying wheel is connected to the left inner wall of the fixed cavity by a bearing. The rotating shaft is shaft-connected to the left side of the fixed cavity and has a threaded hole inside, and the first threaded rod is threadedly connected in the threaded hole of the rotating shaft. The guide wheel is fixedly installed at the right end of the first threaded rod and is in close contact with the conveying wheel. The rocking wheel is fixedly installed at the left end of the rotating shaft.

[0007] The present invention further illustrates that a hole is provided in the middle of the rocking wheel, and the first threaded rod passes through the hole. A nut is threadedly connected to the outer side of the first threaded rod, and the rocking wheel is fixed by the nut.

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

[0009] The present invention further illustrates that the conveying wheel includes a left wheel and a right wheel. The left wheel is connected to the inner wall of the fixed cavity by a bearing, and a threaded groove is provided on the right side. A threaded sleeve is fixed to 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 illustrates 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 of the square block is connected to the second threaded rod by a bearing. A threaded hole is also provided above the left side of the fixed cavity, and the second threaded rod is threadedly connected to the threaded hole above the left side of the fixed cavity.

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

[0012] The present invention further illustrates that the surfaces of the conveying wheel and the guide wheel are both made of frosted PVC material, that is, the surface is polyvinyl chloride PVC material after frosting treatment.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The plastic after recycling is crushed, granulated, and melted by the present invention to form liquid silicone, and then the liquid silicone is injected into the mold for molding work to achieve the purpose of recycling. During the molding process, low temperature is generated by the eddy current cooler to quickly cool the mold, accelerate the demolding speed, and increase the output;

[0014] The cooling cavity adopted is small in volume, material-receiving, and for cooling, it can be more concentrated, reducing the diffusion of cold air, thereby ensuring the low-temperature effect and faster cooling speed. By moving the cooling cavity in the mold, the mold can be fully and highly cooled, and the demolding speed is greatly improved. The operation is simple, the structure is relatively simple, the manufacturing cost is low, and for the molding situation of liquid silicone, the moving speed of the cooling cavity can be freely adjusted, so as to ensure the cooling speed to the greatest extent and improve the molding quality;

[0015] When the length of the lengthened conveying wheel is increased, the adjustment of the moving speed of the cooling cavity can be divided into two sections. One section maintains a high moving speed, and the other section maintains a low moving speed. The adjustment accuracy of the moving speed is higher, and the molding quality is higher. Moreover, after there is a gap between the two, there is a blank period in the adjustment process from high moving speed to low moving speed to avoid over-adjusting the moving speed when reaching the most stable state after adjusting to the intermediate moving speed, which can greatly improve the adjustment accuracy of the moving speed. Brief Description of the Drawings

[0016] The drawings are used to provide a further understanding of the present invention and form 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 to the present invention. In the drawings:

[0017] Figure 1 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 is a front view of the present invention;

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

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

[0022] Figure 6 is a schematic diagram of the way of the moving cooling cavity of the present invention;

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

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

[0025] Figure 9 is a schematic diagram of the third and fourth embodiments of the present invention;

[0026] In the figures: 1, mold; 11, chute; 2, cooling cavity; 3, fixed cavity; 31, threaded plate; 32, screw rod; 33, rotating shaft; 34, rocking wheel; 35, first threaded rod; 36, guide wheel; 37, left wheel; 38, right wheel; 381, threaded sleeve; 39, square block; 391, second threaded rod. Detailed Description of the Preferred Embodiments

[0027] The technical solution of the present invention will be further described in detail below in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0028] Please refer to Figures 1-9, the present invention provides a technical solution: a rapid cooling demolding device based on a liquid silicone mold, including a mold 1 and a rapid cooling demolding mechanism. The rapid cooling demolding mechanism includes a cooling cavity 2. Air outlet holes are provided on the front and rear sides of the cooling cavity 2, and an air inlet hole is provided at the bottom. The air inlet hole 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 in the chute 11. A uniform cooling part is fixed to the left side of the cooling cavity 2.

[0030] The recycled plastic is crushed, granulated, and melted to form liquid silicone. Then, the liquid silicone is injected into the mold 1 for molding work to achieve the purpose of recycling. During the molding process, the external air source enters the hose through the vortex cooler, and then enters the cooling cavity 2 through the hose. The compressed air with a certain pressure expands and accelerates after entering the vortex cooler. The air flow is divided into two air flows. One is the hot air flow, and the other is the cold air flow. The hot air flow is discharged, and the cold air flow enters the cooling cavity 2 to generate low temperature, thereby rapidly cooling the mold 1, accelerating the demolding speed, and increasing the output.

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

[0032] The fixed cavity 3 is fixedly installed on the left side of the lower mold 1. The threaded plate 31 is fixedly installed on the inner wall of the fixed cavity 3 and is provided with a threaded hole in the middle. The screw 32 is threadedly connected in the threaded hole, and the right end is connected to the cooling cavity 2 by a bearing. A convex block 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 convex block of the screw 32 through the groove. The left side of the conveying wheel is connected to the left inner wall of the fixed cavity 3 by a bearing. The rotating shaft 33 is axially connected to the left side of the fixed cavity 3 and is provided with a threaded hole inside. The first threaded rod 35 is threadedly connected in the threaded hole of the rotating shaft 33. The guide wheel 36 is fixedly installed at the right end of the first threaded rod 35 and is in close contact with the conveying wheel. The rocking wheel 34 is fixedly installed at the left end of the rotating shaft 33.

[0033] A hole is provided in the middle of the rocking wheel 34, and the first threaded rod 35 passes through the hole. A nut is threadedly connected to the outside of the first threaded rod 35, and the rocking wheel 34 is fixed by the nut.

[0034] Such as Figure 6As shown in the figure, during the cooling process, the operator rotates the handwheel 34, which drives the first threaded rod 35 to rotate through the rotating shaft 33. The first threaded rod 35 drives the guide wheel 36 to rotate. The guide wheel 36 is in close contact with the conveying wheel and drives the conveying wheel to rotate through friction. The conveying wheel drives the screw 32 to rotate. As a result, the screw 32 rotates and moves to the right along the threaded hole of the threaded plate 31. The screw 32 slides in the groove of the conveying wheel through the convex block 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 to evenly cool the mold 1.

[0035] The adopted cooling chamber 2 is small in volume, material-receiving, and for cooling, it 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 2 in the mold 1, the mold 1 is fully and highly cooled, and the demolding 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, and the conical surface is parallel to the outer side surface of the guide wheel 36.

[0037] Embodiment 1:

[0038] As Figure 7 shown in the figure, to accelerate the molding speed, if the moving speed of the cooling chamber 2 is too fast, at this time the operator loosens the nut and rotates the first threaded rod 35, which rotates and moves to the right along the threaded hole of the rotating shaft 33. At this time, it drives the guide wheel 36 to rotate and move to the right. The guide wheel 36 moves along the conical surface of the conveying wheel until it moves to the right side position of the conveying wheel. When the guide wheel 36 drives the conveying wheel to rotate, the transmission ratio increases and the rotational speed of the conveying wheel decreases, thereby reducing the moving speed of the cooling chamber 2, so that the cooling chamber 2 fully and highly cools each part in 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.

[0039] On the contrary, to improve the molding quality, or when molding high-precision liquid silicone, rotate the first threaded rod 35 in the reverse direction, thereby reducing the transmission ratio and increasing the moving speed of the cooling chamber 2, preventing the local temperature in the mold 1 from rapidly decreasing while the temperature at other positions cannot rapidly decrease, resulting in the liquid silicone at the local position being fully formed before it has fully settled, thereby playing a role in ensuring the molding quality, with more uniform cooling, and only by rotating the handwheel 34 forward and backward can it be evenly cooled, and the cooling speed will not be affected too much.

[0040] According to the molding situation of the liquid silicone, freely adjust the moving speed of the cooling chamber 2, so as to ensure the cooling speed and improve the molding quality to the greatest extent.

[0041] The conveying wheel includes a left wheel 37 and a right wheel 38. The left wheel 37 is connected to the inner wall of the fixed cavity 3 by a bearing, and a threaded groove is provided on the right side. A threaded sleeve 381 is fixed to the left side of the right wheel 38, and the right wheel 38 is connected to the threaded groove of the left wheel 37 through the threaded sleeve 381;

[0042] Embodiment 2:

[0043] As Figure 8 shown, in order to extend the moving stroke of the cooling cavity 2 to be applicable to molds 1 of different lengths, at this time, the operator rotates the right wheel 38, so that it rotates and moves to the right in the threaded groove of the left wheel 37 through the threaded sleeve 381, thereby extending the moving stroke of the screw rod 32. That is, by using a rapid cooling and demolding mechanism, it can be applicable to different models of liquid silicone and molds 1. The manufacturing cost of the rapid cooling and demolding mechanism is further reduced, and the applicable range is wide;

[0044] When the length of the conveying wheel is extended, the speed adjustment of the cooling cavity 2 can be divided into two sections. One section maintains a high speed, and the other section maintains a low speed. The adjustment accuracy of the speed is higher, and the molding quality is higher. After there is a gap between the two, there is a blank period in the adjustment process from high speed to low speed to avoid over-adjusting the speed when reaching the most stable state after adjusting to the intermediate speed, which may affect the adjustment efficiency, and the speed adjustment accuracy can be greatly improved.

[0045] 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 of the square block 39 is connected to a second threaded rod 391 by a bearing. A threaded hole is also provided above the left side of the fixed cavity 3, and the second threaded rod 391 is threadedly connected to the threaded hole above the left side of the fixed cavity 3.

[0046] An inclined groove is provided in the middle of the square block 39, and the rotating shaft 33 is installed in the inclined groove by a bearing;

[0047] Embodiment 3:

[0048] As Figure 9 shown, after the conveying wheel adjusts its length and the speed of the cooling cavity 2 is adjusted to a low speed, there is a positional difference between the left wheel 37 and the right wheel 38. At this time, in order to ensure that the guide wheel 36 can be closely attached to the right wheel 38, the second threaded rod 391 is rotated, so that it rotates and moves upward through the threaded hole, thereby driving the square block 39 to slide along the inner wall of the square groove, and then driving the guide wheel 36 to move upward until the guide wheel 36 is closely attached to the right wheel 38 to ensure the frictional force and enable the cooling cavity 2 to move smoothly.

[0049] The surfaces of the conveying wheel and the guide wheel 36 are both made of frosted PVC material, that is, the surface is polyvinyl chloride PVC material that has been frosted;

[0050] Embodiment 4:

[0051] AsFigure 9 As shown, for the materials on the surfaces of the conveying wheel and the guide wheel 36, when they rub against each other, the frosted PVC material on their surfaces will experience a certain amount of wear, resulting in a gap between the guide wheel 36 and the conveying wheel. At this time, by rotating the second threaded rod 391, the guide wheel 36 can be moved upward, thereby strengthening the tightness between the guide wheel 36 and the conveying wheel to ensure the frictional force, enabling the cooling chamber 2 to move smoothly at all times, and maximizing the service life of the guide wheel 36 and the conveying wheel, achieving maximum utilization, and thus significantly reducing the usage cost of the device.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0053] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to 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 mould, comprising a mould (1) and a rapid cooling demoulding mechanism, characterized in that: The rapid cooling and demolding mechanism includes a cooling cavity (2). Air outlet holes are provided on the front and rear sides of the cooling cavity (2), and an air inlet hole is provided at the bottom. The air inlet hole is connected to an external air source hose, and a vortex cooler is provided at the connection. A chute (11) is provided at the bottom of the mold (1). The cooling cavity (2) is slidably connected in the chute (11), and a uniform cooling part is fixed to the left side of the cooling cavity (2).

2. The rapid cooling type demolding device based on a liquid silicone mold according to claim 1, wherein: The uniform cooling part includes a fixed cavity (3), a threaded plate (31), a screw (32), a conveying wheel, a rotating shaft (33), a rocking wheel (34), a first threaded rod (35), and a guide wheel (36). The fixed cavity (3) is fixedly installed on the left side of the lower mold (1). The threaded plate (31) is fixedly installed on the inner wall of the fixed cavity (3) and is provided with a threaded hole in the middle. The screw (32) is threadedly connected in the threaded hole, and the right end is connected to the cooling cavity (2) by a bearing. A convex block is provided on the left side of the screw (32). A groove is provided inside the conveying wheel and 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 inner wall of the fixed cavity (3) by a bearing. The rotating shaft (33) is axially connected to the left side of the fixed cavity (3) and is provided with a threaded hole inside, and the first threaded rod (35) is threadedly connected in the threaded hole of the rotating shaft (33). The guide wheel (36) is fixedly installed at the right end of the first threaded rod (35) and is in close contact with the conveying wheel. The rocking wheel (34) is fixedly installed at the left end of the rotating shaft (33).

3. The rapid cooling type demoulding device based on a liquid silicone rubber mould according to claim 2, wherein: A hole is provided in the middle of the rocking wheel (34), and the first threaded rod (35) passes through the hole. A nut is threadedly connected to the outer side of the first threaded rod (35), and the rocking wheel (34) is fixed by the nut.

4. The rapid cooling type demolding device based on a liquid silicone mold according to claim 3, wherein: The conveying wheel is conical, and the conical surface is parallel to the outer side surface of the guide wheel (36).

5. The rapid cooling type demolding device based on a liquid silicone mold according to claim 4, wherein: The conveying wheel includes a left wheel (37) and a right wheel (38). The left wheel (37) is connected to the inner wall of the fixed cavity (3) by a bearing, and a threaded groove is provided on the right side. A threaded sleeve (381) is fixed to the left side of the right wheel (38), and the right wheel (38) is connected to the threaded groove of the left wheel (37) through the threaded sleeve (381).

6. The rapid cooling type demoulding device based on a liquid silicone rubber mould according to claim 5, 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. A second threaded rod (391) is connected to the upper end of the square block (39) by a bearing. A threaded hole is also provided above the left side of the fixed cavity (3), and the second threaded rod (391) is threadedly connected in the threaded hole above the left side of the fixed cavity (3).

7. The rapid cooling type demoulding device based on a liquid silicone rubber mold according to claim 6, wherein: An inclined groove is provided in the middle of the square block (39), and the rotating shaft (33) is installed in the inclined groove by a bearing.

8. The rapid cooling type demolding device based on a liquid silicone mold according to claim 7, characterized in that: The surfaces of the conveying wheel and the guide wheel (36) are both made of frosted PVC material, that is, the surface is polyvinyl chloride PVC material after frosting treatment.

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