Rapid cooling and shaping device for plastic products

Abstract

The utility model discloses a quick cooling and shaping device for plastic products, which comprises a hot press molding device, a lower die is fixedly mounted in the middle of the upper end face of the hot press molding device, and a cooling device is mounted above the lower die. The negative pressure fan is arranged on the lower portion of the interior of the cooling device, a mounting frame outside the negative pressure fan is fixed to the inner wall of the cooling device through screws, an evaporator is mounted in the middle of the interior of the cooling device, and medium conveying pipes extending to the exterior of the cooling device are arranged at the two ends of the evaporator correspondingly; the air inlet mechanism is arranged at the upper end of the cooling device, and the air inlet mechanism is connected with the cooling device in a clamped mode; and the sliding grooves are formed in the front and the rear of the upper end face of the hot press forming device, connecting frames are fixedly installed at the front end and the rear end of the cooling device, and the problems that the size of a formed plastic product is prone to change due to the fact that the formed plastic product cannot be cooled in time, and dust and impurities are prone to being blown to the surface of the product in the cooling process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic product production, in particular to a rapid cooling and shaping device for plastic products. Background Art

[0002] Moulds are important tools for producing plastic products. Their quality and precision directly affect the quality and performance of plastic products. Traditional mould manufacturing methods mainly include hand carving, machining and EDM, which are not only inefficient but also difficult to produce complex and high-precision moulds. With the continuous advancement of science and technology, mould manufacturing technology has also been continuously improved, thereby improving the precision and efficiency of mould manufacturing. The processing technology of injecting molten plastic into the mould for molding is suitable for making complex and high-precision products.

[0003] For example, the Chinese authorized patent "A Plastic Product Production Mold" with announcement number CN211891765U includes a base, a lower module and an upper module. The lower module is located at the top of the base, and the upper module is located at the top of the lower module. The base includes a hydraulic pipe, a hydraulic block, a telescopic rod, a connecting piece, a long rod, a spring and a limit column. The hydraulic pipe is located on one side of the base, the hydraulic block is located at the top of the base, the telescopic rod is located at the top of the hydraulic block, the long rod is located on one side of the telescopic rod, and the spring is located on one side of the long rod. The lower module includes a cooling port, an extrusion block and a perforation. The cooling port is located on one side of the lower module, the extrusion block is located at the top of the lower module, and the perforation is located on one side of the extrusion block. The upper module includes an injection port, a molding groove, a temperature sensor and a display screen. The temperature sensor is located inside the upper module, and the display screen is located on one side of the upper module.

[0004] Although the above-mentioned prior art can realize the injection molding of plastic products, after the plastic is molded, due to its own high temperature, the plastic material will not be completely solidified, which may cause problems such as product size change or even damage. Although there are some devices in the prior art for cooling the plastic products after molding, it is easy to blow external dust and other impurities to the surface of the product during the cooling process, causing a decrease in quality. Therefore, it does not meet the existing needs. In this regard, we propose a rapid cooling and shaping device for plastic products. Utility Model Content

[0005] The utility model aims to provide a rapid cooling and shaping device for plastic products, so as to solve the problems in the above-mentioned background technology that the plastic products after molding cannot be cooled in time, which may lead to the change of product size and the dust and impurities may be blown onto the product surface during the cooling process.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rapid cooling and shaping device for plastic products, comprising a hot pressing molding device, a lower mold is fixedly installed at the middle position of the upper end surface of the hot pressing molding device, and a cooling device is installed above the lower mold; and further comprising:

[0007] A negative pressure fan is arranged below the interior of the cooling device, and a mounting frame outside the negative pressure fan is fixed to the inner wall of the cooling device by screws, an evaporator is installed at the middle position inside the cooling device, and both ends of the evaporator are provided with a medium delivery pipe extending to the outside of the cooling device;

[0008] An air inlet mechanism is arranged at the upper end of the cooling device, and the air inlet mechanism is connected to the cooling device;

[0009] A slide groove is arranged in front and behind the upper end surface of the hot pressing forming device. The front and rear ends of the cooling device are fixedly installed with connecting frames, and the connecting frames and the slide groove are slidably limited.

[0010] Preferably, a condenser is installed on one side inside the hot pressing molding device, a compressor is arranged below one side of the condenser, and the compressor, condenser and evaporator are connected through a medium delivery pipe, and a cooling fan is installed behind the condenser.

[0011] Preferably, a top plate is provided above the hot pressing forming device, and the top plate and the four corners of the hot pressing forming device are supported by a fixed frame, a hydraulic lifting device is installed at the middle position of the bottom of the top plate, an upper mold is installed at the bottom of the hydraulic lifting device, and the upper mold is snap-fitted with the lower mold, and injection tubes are installed on both sides of the upper end surface of the upper mold.

[0012] Preferably, a lead screw is rotatably installed inside the slide groove, a slider is installed outside the lead screw, the inner screw hole of the slider is threadedly connected to the lead screw, and the upper end of the slider is fixed to the connecting frame, and a servo motor is arranged at one end of the lead screw.

[0013] Preferably, a dust filter ring is provided inside the air inlet mechanism, four dust filter rings are provided, and the diameter of the dust filter ring gradually increases from the inside to the outside, and the upper and lower ends of the dust filter ring are sealed and connected to the air inlet mechanism.

[0014] Preferably, an air inlet is arranged on the outer ring of the upper end surface of the air inlet mechanism, and an air outlet is arranged at the middle position of the bottom of the air inlet mechanism.

[0015] Preferably, a heat dissipation grille is installed at the front end of the condenser, and the heat dissipation grille is fixed to the hot pressing forming device by screws.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model uses a cooling device. After the plastic product is formed, the lower mold will be separated from the upper mold. At this time, the cooling device moves to the top of the lower mold. By turning on the compressor, the refrigerant medium first passes through the compressor to become a high-pressure gas, and then passes through the condenser to release heat and become a high-pressure liquid. The high-pressure liquid passes through the throttling device to become a low-temperature and low-pressure liquid, and then passes through the evaporator to evaporate and absorb heat to become a low-temperature and low-pressure gas, cooling the air inside the cooling device. Subsequently, under the action of the negative pressure fan, the cold air is blown downward. When the cold air contacts the surface of the plastic product, it will quickly form a heat exchange reaction with it, thereby accelerating its own solidification and avoiding deformation and damage.

[0018] 2. The utility model is provided with a convenient displacement mechanism. Under normal circumstances, the cooling device is located on one side of the lower mold, which will not affect the mold fitting between the upper mold and the lower mold. When cooling work is required, the servo motor drives the lead screw to rotate, and the rotational motion is converted into linear motion under the friction between the lead screw and the thread of the slider, so that the cooling device is driven by the slider to move quickly to the top of the plastic product, and the cooling work is carried out in time. This structure is highly convenient and can perform cooling work at the first time of mold separation, further improving the molding effect of the plastic product.

[0019] 3. The utility model is provided with an air inlet mechanism. When the negative pressure fan is turned on, due to the negative pressure formed inside the cooling device, the external air will enter from the air inlet to the outer ring inside the air inlet mechanism, and gradually move toward the center through the dust filter ring. During the movement, dust and other impurities in the air will be blocked on the outer wall of the dust filter ring, and the air finally gathered at the air outlet will remain clean. In this way, the cold air blown to the surface of the plastic product will not affect its quality, thereby providing a guarantee for the high-quality production of plastic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the workbench of the hot pressing forming device of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall internal structure of the utility model;

[0022] Figure 3 This is an exploded diagram of the cooling device of the utility model;

[0023] Figure 4 It is a schematic diagram of the internal structure of the air inlet mechanism of the utility model.

[0024] In the figure: 1. hot pressing forming device; 2. lower mold; 3. cooling device; 4. air inlet mechanism; 5. connecting frame; 6. medium conveying pipe; 7. slide chute; 8. heat dissipation grille; 9. top plate; 10. fixing frame; 11. upper mold; 12. hydraulic lifting device; 13. injection pipe; 14. lead screw; 15. slider; 16. servo motor; 17. condenser; 18. heat dissipation fan; 19. compressor; 20. evaporator; 21. negative pressure fan; 22. dust filter ring; 23. air outlet; 24. air inlet. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figure 1-4 The utility model provides an embodiment: a rapid cooling and shaping device for plastic products, comprising a hot pressing molding device 1, a lower mold 2 is fixedly installed at the middle position of the upper end surface of the hot pressing molding device 1, and a cooling device 3 is installed above the lower mold 2; and further comprising:

[0027] A negative pressure fan 21 is arranged at the lower part of the cooling device 3, and a mounting frame outside the negative pressure fan 21 is fixed to the inner wall of the cooling device 3 by screws. An evaporator 20 is installed at the middle position inside the cooling device 3, and both ends of the evaporator 20 are provided with a medium conveying pipe 6 extending to the outside of the cooling device 3;

[0028] The air inlet mechanism 4 is arranged at the upper end of the cooling device 3, and the air inlet mechanism 4 is snap-connected with the cooling device 3;

[0029] The slide groove 7 is arranged at the front and rear of the upper end surface of the hot pressing forming device 1. The front and rear ends of the cooling device 3 are fixedly installed with the connecting frame 5, and the connecting frame 5 and the slide groove 7 are slidably limited.

[0030] After the plastic product is formed, the lower mold 2 will be separated from the upper mold 11. At this time, the cooling device 3 moves to the top of the lower mold 2. By turning on the compressor 19, the refrigerant medium first passes through the compressor 19 to become a high-pressure gas, and then passes through the condenser 17 to condense and release heat to become a high-pressure liquid. The high-pressure liquid passes through the throttling device to become a low-temperature and low-pressure liquid, and then passes through the evaporator 20 to evaporate and absorb heat to become a low-temperature and low-pressure gas, cooling the air inside the cooling device 3. Subsequently, under the action of the negative pressure fan 21, the cold air is blown downward. When the cold air contacts the surface of the plastic product, rapid cooling is formed.

[0031] See also Figure 2A condenser 17 is installed on one side of the hot pressing molding device 1, and a compressor 19 is arranged below one side of the condenser 17. The compressor 19, the condenser 17 and the evaporator 20 are connected through a medium delivery pipe 6. A cooling fan 18 is installed behind the condenser 17 to quickly form a heat exchange reaction with the plastic product, thereby accelerating the curing of the plastic product and avoiding deformation and damage.

[0032] See also Figure 2 A top plate 9 is arranged above the hot pressing forming device 1, and the top plate 9 and the four corners of the hot pressing forming device 1 are supported by a fixing frame 10. A hydraulic lifting device 12 is installed at the middle position of the bottom of the top plate 9. An upper mold 11 is installed at the bottom of the hydraulic lifting device 12, and the upper mold 11 is engaged with the lower mold 2. Injection pipes 13 are installed on both sides of the upper end surface of the upper mold 11. After the lower mold 2 and the upper mold 11 are combined, the molten plastic raw material is injected into the molding cavity of the two through the injection pipes 13.

[0033] See also Figure 2 A lead screw 14 is rotatably installed inside the slide groove 7, a slider 15 is installed outside the lead screw 14, the inner screw hole of the slider 15 is threadedly connected to the lead screw 14, and the upper end of the slider 15 is fixed to the connecting frame 5, and a servo motor 16 is provided at one end of the lead screw 14. This structure is highly convenient and can perform cooling work at the first time of mold separation, further improving the molding effect of the plastic product.

[0034] See also Figure 3 and Figure 4 A dust filter ring 22 is arranged inside the air inlet mechanism 4. There are four dust filter rings 22, and the diameter of the dust filter ring 22 gradually increases from the inside to the outside. The upper and lower ends of the dust filter ring 22 are sealed with the air inlet mechanism 4, and impurities such as dust in the air will be blocked by the outer wall of the dust filter ring 22.

[0035] See also Figure 3 and Figure 4 An air inlet 24 is arranged on the outer circle of the upper end surface of the air inlet mechanism 4, and an air outlet 23 is arranged at the middle position of the bottom of the air inlet mechanism 4, so as to realize the movement route of air gathering from the outside to the center.

[0036] See also Figure 1 A heat dissipation grille 8 is installed at the front end of the condenser 17, and the heat dissipation grille 8 is fixed to the hot pressing forming device 1 by screws, which is convenient for maintenance of the cooling assembly.

[0037] Working principle: When in use, the servo motor 16 drives the lead screw 14 to rotate, and the rotational motion is converted into linear motion under the friction between the lead screw and the slider 15, so that the cooling device 3 is driven by the slider 15 to move quickly to the top of the plastic product, and the cooling work is carried out in time. When the negative pressure fan 21 is turned on, due to the negative pressure formed inside the cooling device 3, the external air will enter the outer ring inside the air inlet mechanism 4 from the air inlet 24, and gradually move toward the center through the dust filter ring 22. During the movement, dust and other impurities in the air will be blocked by the outer wall of the dust filter ring 22, and the air finally gathered at the air outlet 23 will remain clean, so that the cold air blown to the surface of the plastic product will not affect its quality.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A rapid cooling and shaping device for plastic products, comprising a hot pressing molding device (1), a lower mold (2) is fixedly installed at the middle position of the upper end surface of the hot pressing molding device (1), and a cooling device (3) is installed above the lower mold (2); Features: Also includes: A negative pressure fan (21) is arranged below the interior of the cooling device (3), and a mounting frame outside the negative pressure fan (21) is fixed to the inner wall of the cooling device (3) by screws. An evaporator (20) is installed at a middle position inside the cooling device (3), and both ends of the evaporator (20) are provided with a medium delivery pipe (6) extending to the outside of the cooling device (3); An air inlet mechanism (4) is arranged at the upper end of the cooling device (3), and the air inlet mechanism (4) is snap-connected with the cooling device (3); A slide groove (7) is arranged at the front and rear ends of the upper end surface of the hot pressing forming device (1); a connecting frame (5) is fixedly installed at the front and rear ends of the cooling device (3), and the connecting frame (5) and the slide groove (7) are slidably limited.

2. The rapid cooling and shaping device for plastic products according to claim 1, characterized in that: A condenser (17) is installed on one side inside the hot pressing molding device (1), a compressor (19) is arranged below one side of the condenser (17), and the compressor (19), the condenser (17) and the evaporator (20) are connected via a medium delivery pipe (6), and a heat dissipation fan (18) is installed behind the condenser (17).

3. The rapid cooling and shaping device for plastic products according to claim 1, characterized in that: A top plate (9) is arranged above the hot pressing forming device (1), and the top plate (9) and the four corners of the hot pressing forming device (1) are supported by a fixing frame (10). A hydraulic lifting device (12) is installed at the middle position of the bottom of the top plate (9), and an upper mold (11) is installed at the bottom of the hydraulic lifting device (12), and the upper mold (11) is snap-fitted with the lower mold (2), and injection pipes (13) are installed on both sides of the upper end surface of the upper mold (11).

4. The rapid cooling and shaping device for plastic products according to claim 1, characterized in that: A lead screw (14) is rotatably mounted inside the slide groove (7), a slider (15) is mounted outside the lead screw (14), an inner screw hole of the slider (15) is threadedly connected to the lead screw (14), and an upper end of the slider (15) is fixed to the connecting frame (5), and a servo motor (16) is arranged at one end of the lead screw (14).

5. The rapid cooling and shaping device for plastic products according to claim 1, characterized in that: A dust filter ring (22) is arranged inside the air inlet mechanism (4), four dust filter rings (22) are arranged, and the diameter of the dust filter ring (22) gradually increases from the inside to the outside, and the upper and lower ends of the dust filter ring (22) are sealed and connected to the air inlet mechanism (4).

6. A rapid cooling and shaping device for plastic products according to claim 5, characterized in that: An air inlet (24) is arranged on the outer ring of the upper end surface of the air inlet mechanism (4), and an air outlet (23) is arranged at the middle position of the bottom of the air inlet mechanism (4).

7. The rapid cooling and shaping device for plastic products according to claim 2, characterized in that: A heat dissipation grille (8) is installed at the front end of the condenser (17), and the heat dissipation grille (8) is fixed to the hot pressing molding device (1) by screws.

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