Precise cooling equipment for plastic mold

Abstract

The invention relates to the field of plastic molds, and discloses plastic mold precise cooling equipment which comprises a base, a second box cover is arranged at the top of an absorption type refrigerating unit, a cooling pipeline is fixed to one side of the absorption type refrigerating unit, and the cooling pipeline extends into a storage box mechanism. And a centrifugal pump is fixed to the inner bottom of the storage box mechanism, a second water outlet pipeline is fixed to one side of the centrifugal pump and penetrates through one side of the storage box mechanism, and a filtering mechanism is fixed to one side of the storage box mechanism. According to the precise cooling equipment for the plastic mold, the technical problems of poor cooling, water leakage and waterway blockage of a traditional waterway cooling mold are solved, the problem of product deformation caused by poor water temperature cooling is solved, a waterway processing link is directly omitted in the mold processing process, industrial wastewater pollution discharged by the plastic mold is reduced to zero, and the production cost is reduced. The water solution can be recycled, so that industrial water resources are saved, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of plastic molds, and specifically to a precision cooling device for plastic molds. Background Art

[0002] All existing plastic molds on the market are water-cooled molds. During the 24-hour production process of plastic molds, industrial water is required to cool the molds, and it also flows continuously for 24 hours and is discharged into rivers or sewers, resulting in waste of water resources and an increase in production costs. There are thousands of plastic molds in industrial parks in each provincial capital of our country producing 24 hours a day, and the waste of water resources has no end and has never been solved since ancient times. This is a long-term problem that plagues industrial development. The production of plastic molds creates value at the expense of the environment and water resources, which is not advisable.

[0003] At the source of mold development, the processing of the mold waterways is difficult and time-consuming, and the labor cost is high. During the production process, the mold rusts severely. Especially when water splashes into the cavity of the mirror mold, the product is unqualified, and the moving parts and sliding parts rust, resulting in the mold being stuck, requiring a large amount of maintenance costs, increasing production costs and production efficiency. Plastic molds have the following disadvantages: 1. During the pre-processing of the mold waterway, the labor cost increases, the process is cumbersome, and the error rate is high. When the mold is completed, some redundant waterways need to be blocked with plugs, and the cost of the waterproof seals for the waterways is high, seriously wasting labor and material costs, which is unreasonable and needs to be improved; 2. During the mid-stage of the mold, during the processing of the mold, in terms of design, due to the waterway, it causes difficulties in rectification for the designer; 3. After the mold development is completed, during the later production process, under normal production conditions, due to the long time of the waterway, rusting and aging lead to the waterway being blocked, and the leakage phenomenon occurs frequently. Because of the leakage or the blocked waterway, the mold must be repaired offline. Due to the blocked or leaking waterway, the mold needs to be disassembled, which causes workload for the fitter master and increases the labor operation cost; 4. When the mold is stored, because there is a large amount of water remaining in the waterway, it causes the inside of the mold to rust due to iron oxide, the waterway is blocked, and normal production in the next cycle cannot be carried out normally, causing intangible losses to the mold. The appearance rusts severely, and the rusted waterway inside is blocked. Traditional waterways and water-transfer molds cannot be stored for a long time. Summary of the Invention

[0004] The purpose of the present invention is to provide a precision cooling device for plastic molds, which solves technical problems such as insufficient cooling, leakage, and blocked waterways of traditional water-cooled molds, as well as the problem of product deformation caused by insufficient water temperature cooling, and directly omits the waterway processing link during the mold processing process.

[0005] To achieve the above object, the present invention provides the following technical solution: a precision cooling device for plastic molds, including a base, a storage tank mechanism is fixed in the middle of the upper end surface of the base, an automatic liquid adding pump is fixed on the inner top of the storage tank mechanism, a first water outlet pipe is fixed on the top of the automatic liquid adding pump, and the first water outlet pipe penetrates through the top of the storage tank mechanism.

[0006] On one side of the upper end surface of the base, an absorption refrigeration unit is fixed, a second box cover is arranged on the top of the absorption refrigeration unit, a cooling pipe is fixed on one side of the absorption refrigeration unit, the cooling pipe extends into the storage tank mechanism, a centrifugal pump is fixed on the inner bottom of the storage tank mechanism, a second water outlet pipe is fixed on one side of the centrifugal pump, the second water outlet pipe penetrates through one side of the storage tank mechanism, and a filtering mechanism is fixed on one side of the storage tank mechanism.

[0007] Preferably, the storage tank mechanism includes a box body, a sandwich layer is fixed inside the side wall of the box body, and the sandwich layer is made of aluminum foil heat-insulating material, and an epoxy resin coating is fixed on the inner wall of the box body.

[0008] Preferably, a control panel is fixed on the front side of the storage tank mechanism, a through hole is opened on the top of the storage tank mechanism, and a first box cover is fixed on the top of the storage tank mechanism through bolts.

[0009] Preferably, a liquid monitor is fixed on the inner top of the storage tank mechanism, and a temperature sensor is fixed on one inner wall of the storage tank mechanism.

[0010] Preferably, the filtering mechanism includes a filtering box, and the filtering box is fixed on one side of the storage tank mechanism, and a first return water pipe is fixed on the top of the filtering box.

[0011] Preferably, a support plate is fixed inside the filtering box, and a filter cotton is slidably connected between the support plate and one inner wall of the filtering box. There are three filter cottons, and the three filter cottons are equally spaced between the support plate and one inner wall of the filtering box.

[0012] Preferably, a motor is fixed on one side of the filtering box, and the output end of the motor is connected to a first belt transmission component, and a second belt transmission component is fixed on one side of the first belt transmission component.

[0013] Preferably, worm gears are fixed on two output ends of the first belt transmission component and one output end of the second belt transmission component, and the worm gears are rotatably connected to one side of the filtering box. A worm wheel is meshed with the front side of the worm gear, and the worm wheel is rotatably connected to the inside of the filtering box. A water guide ring is fixed on the bottom of the worm wheel, and the water guide ring is arranged corresponding to the filter cotton up and down one by one.

[0014] Preferably, a water pump is fixed to the inner bottom of the filter box, and a second return water pipe is fixed to the top of the water pump. The second return water pipe penetrates through the top of the filter box and extends into the storage tank mechanism.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This precision cooling equipment for plastic molds solves technical problems such as incomplete cooling, water leakage, and waterway blockage in the traditional water-cooled molds, as well as the problem of product deformation caused by insufficient water temperature cooling. During the mold processing, the waterway processing link is directly omitted, reducing the pollution of industrial wastewater discharged from plastic molds to zero. The aqueous solution can be recycled, saving industrial water resources, improving production efficiency, and making the mold size more accurate by utilizing the property of thermal expansion and contraction of iron. Because when heated, the mold size tends to be larger. During the mold production process, the entire mold is maintained at about -5 degrees Celsius to achieve precise cooling. About 20 minutes before the mold production, the mold temperature can be quickly reduced to -10 - 15 degrees Celsius, and if heating production is required, the mold temperature can be quickly raised to 50 - 300 degrees Celsius as required for the mold temperature.

[0016] 2. This precision cooling equipment for plastic molds gets rid of the cumbersome traditional cold processing technology at the root. During the production process of plastic molds, the cooling cycle is shortened from 15 seconds to 7 seconds. During the 24-hour production process, 100 - 200 yuan of electricity cost can be saved per day, and each mold product is improved by 7 seconds, improving production efficiency and achieving the effect of cost reduction and efficiency increase.

[0017] 3. This precision cooling equipment for plastic molds adopts an absorption refrigeration system, which realizes low-carbon environmental protection, low energy consumption and electricity cost savings, and achieves the purpose of cost reduction considering the cost and power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the first three-dimensional structure schematic diagram of the present invention; Figure 2 It is the second three-dimensional structure schematic diagram of the present invention; Figure 3 It is the front view sectional structure schematic diagram of the present invention; Figure 4 It is the front view sectional structure schematic diagram of the filtering mechanism of the present invention; Figure 5 It is the top view sectional structure schematic diagram of the filtering mechanism of the present invention.

[0019] In the figure: 1. Base; 2. Savings box mechanism; 201. Box body; 202. Interlayer; 203. Epoxy resin coating; 3. Control panel; 4. Through hole; 5. First box cover; 6. Automatic liquid adding pump; 7. First water outlet pipe; 8. Liquid monitor; 9. Temperature sensor; 10. Absorption refrigeration unit; 11. Second box cover; 12. Cooling pipe; 13. Centrifugal pump; 14. Second water outlet pipe; 15. Filter mechanism; 1501. Filter box; 1502. First return water pipe; 1503. Support plate; 1504. Filter cotton; 1505. Motor; 1506. First belt drive assembly; 1507. Second belt drive assembly; 1508. Worm; 1509. Worm gear; 1510. Water guide ring; 1511. Water pump; 1512. Second return water pipe. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 5 , the present invention provides a technical solution: a precision cooling device for plastic molds, including a base 1, a savings box mechanism 2 is fixed in the middle of the upper end surface of the base 1, an automatic liquid adding pump 6 is fixed on the inner top of the savings box mechanism 2, and a first water outlet pipe 7 is fixed on the top of the automatic liquid adding pump 6, and the first water outlet pipe 7 penetrates through the top of the savings box mechanism 2.

[0022] An absorption refrigeration unit 10 is fixed on one side of the upper end surface of the base 1, a second box cover 11 is arranged on the top of the absorption refrigeration unit 10, a cooling pipe 12 is fixed on one side of the absorption refrigeration unit 10, the cooling pipe 12 extends into the savings box mechanism 2, a centrifugal pump 13 is fixed on the inner bottom of the savings box mechanism 2, a second water outlet pipe 14 is fixed on one side of the centrifugal pump 13, the second water outlet pipe 14 penetrates through one side of the savings box mechanism 2, and a filter mechanism 15 is fixed on one side of the savings box mechanism 2.

[0023] In this embodiment, as Figure 3 shown, the savings box mechanism 2 includes a box body 201, an interlayer 202 is fixed inside the side wall of the box body 201, and the interlayer 202 is made of aluminum foil heat insulation material. An epoxy resin coating 203 is fixed on the inner wall of the box body 201. The box body 201 is used to store sodium hydroxide aqueous solution. The aluminum foil heat insulation material can play a heat insulation role, and the epoxy resin coating 203 can prevent the box body 201 from being eroded and worn by chemical substances.

[0024] In this embodiment, as Figure 1and Figure 2 As shown in the figure, a control panel 3 is fixed to the front side of the storage tank mechanism 2. A through hole 4 is formed in the top of the storage tank mechanism 2, and a first tank cover 5 is fixed to the top of the storage tank mechanism 2 by bolts. After opening the first tank cover 5, liquid can be poured into the storage tank mechanism 2. The control panel 3 is provided with a temperature control system, hydraulic detection and fault alarm. When a fault occurs in the absorption refrigeration unit 10, an alarm is installed on the top for display. There are two mobile interfaces, and the refrigeration equipment system can be replaced at any time to ensure the normal operation of the machine and does not affect the production of products.

[0025] In this embodiment, as Figure 3 shown, a liquid monitor 8 is fixed to the inner top of the storage tank mechanism 2, and a temperature sensor 9 is fixed to an inner wall of the storage tank mechanism 2. The absorption refrigeration unit 10 is used to cool the temperature of the liquid in the storage tank mechanism 2 to about minus 15 degrees Celsius. The sodium chloride solution at minus 15 degrees Celsius effectively cools the mold. The liquid monitor 8 can monitor the liquid pressure, and the temperature sensor 9 can monitor the liquid temperature.

[0026] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the filtering mechanism 15 includes a filtering box 1501, and the filtering box 1501 is fixed to one side of the storage tank mechanism 2. A first return water pipe 1502 is fixed to the top of the filtering box 1501. Before the sodium hydroxide solution flows back into the storage tank mechanism 2 from the mold, it needs to pass through the filtering box 1501. The filtering box 1501 filters the sodium chloride solution to prevent impurities in the sodium chloride solution from entering the centrifugal pump 13.

[0027] In this embodiment, as Figure 3 、 Figure 4 and Figure 5 shown, a support plate 1503 is fixed to the inner side of the filtering box 1501, and a filter cotton 1504 is slidably connected between the support plate 1503 and an inner wall of the filtering box 1501. There are three filter cottons 1504, and the three filter cottons 1504 are equidistantly distributed between the support plate 1503 and an inner wall of the filtering box 1501. The three filter cottons 1504 can perform three-layer filtering on the sodium chloride solution, making the filtering effect more thorough.

[0028] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, a motor 1505 is fixed to one side of the filtration tank 1501, and the output end of the motor 1505 is connected to the first belt transmission assembly 1506. A second belt transmission assembly 1507 is fixed to one side of the first belt transmission assembly 1506. The first belt transmission assembly 1506 can operate under the action of the motor 1505, thereby driving the second belt transmission assembly 1507 to operate.

[0029] In this embodiment, as Figure 3 , Figure 4 and Figure 5 shown, worm gears 1508 are fixed to both output ends of the first belt transmission assembly 1506 and one output end of the second belt transmission assembly 1507. The worm gears 1508 are rotatably connected to one side of the filtration tank 1501. A worm wheel 1509 is meshed and connected to the front side of the worm gear 1508. The worm wheel 1509 is rotatably connected to the inside of the filtration tank 1501. A water guide ring 1510 is fixed to the bottom of the worm wheel 1509. The water guide ring 1510 is arranged in a one-to-one correspondence with the filter cotton 1504 up and down. When the first belt transmission assembly 1506 operates, it can drive the corresponding two worm gears 1508 to rotate. When the second belt transmission assembly 1507 operates, it can drive the corresponding one worm gear 1508 to rotate. The rotation of the worm gear 1508 drives the rotation of the worm wheel 1509. The three water guide rings 1510 rotate simultaneously. The water guide ring 1510 plays a guiding role in the sodium chloride solution, enabling the sodium chloride solution to fully contact the filter cotton 1504, which is convenient for making full use of the filter cotton 1504 to filter the sodium chloride solution.

[0030] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a water pump 1511 is fixed to the inner bottom of the filtration tank 1501. A second return water pipe 1512 is fixed to the top of the water pump 1511. The second return water pipe 1512 penetrates through the top of the filtration tank 1501 and extends into the storage tank mechanism 2. The water pump 1511 can pump the filtered sodium chloride solution into the storage tank mechanism 2.

[0031] The usage method and advantages of the present invention: The precision cooling equipment for plastic molds works as follows: As Figures 1 to 5As shown: The control panel 3 includes a temperature control system, hydraulic detection, and fault alarm. The storage tank mechanism 2 is used to store sodium hydroxide solution. The sandwich layer 202 of aluminum foil thermal insulation material can play a role in heat preservation. The epoxy resin coating 203 can prevent the box body 201 from being eroded and worn by chemical substances. The centrifugal pump 13 circulates the sodium hydroxide solution into the mold. After passing through the filter box 1501, the sodium hydroxide solution returns to the storage tank mechanism 2. The absorption refrigeration unit 10 and the cooling pipe 12 are used in combination to cool the liquid temperature to about minus 15 degrees Celsius. The sodium chloride solution at minus 15 degrees Celsius effectively cools the mold. Under the coordination of the temperature control system, the temperature can be adjusted to reach the required temperature value, thereby reducing the product production cycle and meeting the production requirements. After the liquid enters the filter box 1501, three filter cotton layers 1504 perform three-layer filtration on the sodium hydroxide solution. During this process, the first belt drive assembly 1506 and the second belt drive assembly 1507 operate to drive three worms 1508 to rotate. The worm gear 1509 rotates along with the rotation of the worm 1508, thereby driving the water guide ring 1510 to rotate. The water guide ring 1510 guides the sodium hydroxide solution, enabling it to fully contact the filter cotton 1504. The filtered liquid returns to the storage tank mechanism 2 through the second return water pipe 1512. If the absorption refrigeration unit 10 fails during the 24-hour production process, an alarm is installed at the top for display. There are two mobile interfaces, and the refrigeration equipment system can be replaced at any time to ensure the normal operation of the machine without affecting the production of products. When using this equipment, it is not allowed to put or add dangerous goods such as flammable, explosive liquids or gases into the storage tank mechanism 2. After a large number of or multiple experiments, it has been proved that the physical properties of sodium chloride solution remain unchanged under high or low temperature conditions, and it can be used safely with confidence.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Technical staff in this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0033] The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of simplifying the description of 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, and thus cannot be understood as a limitation to the protection content of the present invention.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A precision cooling device for plastic molds, comprising a base (1), characterized in that: In the middle of the upper end surface of the base (1), a savings box mechanism (2) is fixed. At the inner top of the savings box mechanism (2), an automatic liquid adding pump (6) is fixed. On the top of the automatic liquid adding pump (6), a first water outlet pipe (7) is fixed, and the first water outlet pipe (7) penetrates through the top of the savings box mechanism (2). On one side of the upper end surface of the base (1), an absorption refrigeration unit (10) is fixed. On the top of the absorption refrigeration unit (10), a second box cover (11) is arranged. On one side of the absorption refrigeration unit (10), a cooling pipe (12) is fixed, and the cooling pipe (12) extends into the savings box mechanism (2). At the inner bottom of the savings box mechanism (2), a centrifugal pump (13) is fixed. On one side of the centrifugal pump (13), a second water outlet pipe (14) is fixed, and the second water outlet pipe (14) penetrates through one side of the savings box mechanism (2). On one side of the savings box mechanism (2), a filtering mechanism (15) is fixed.

2. The precision cooling device for a plastic mold according to claim 1, wherein: The savings box mechanism (2) includes a box body (201). A sandwich layer (202) is fixed inside the side wall of the box body (201), and the sandwich layer (202) is made of aluminum foil thermal insulation material. An epoxy resin coating (203) is fixed on the inner wall of the box body (201).

3. The precision cooling device for a plastic mold according to claim 1, wherein: A control panel (3) is fixed on the front side of the savings box mechanism (2). A through hole (4) is opened on the top of the savings box mechanism (2), and a first box cover (5) is fixed on the top of the savings box mechanism (2) through bolts.

4. A precision cooling device for plastic molds according to claim 1, characterized in that: A liquid monitor (8) is fixed on the inner top of the savings box mechanism (2), and a temperature sensor (9) is fixed on one inner wall of the savings box mechanism (2).

5. The precision cooling device for a plastic mold according to claim 1, characterized in that: The filtering mechanism (15) includes a filtering box (1501), and the filtering box (1501) is fixed on one side of the savings box mechanism (2). A first return water pipe (1502) is fixed on the top of the filtering box (1501).

6. The precision cooling device for a plastic mold according to claim 5, characterized in that: A support plate (1503) is fixed inside the filtering box (1501), and a filter cotton (1504) is slidably connected between the support plate (1503) and one inner wall of the filtering box (1501). There are three filter cottons (1504), and the three filter cottons (1504) are equally spaced between the support plate (1503) and one inner wall of the filtering box (1501).

7. The precision cooling device for a plastic mold according to claim 5, characterized in that: A motor (1505) is fixed on one side of the filtering box (1501), and the output end of the motor (1505) is connected to a first belt transmission component (1506). A second belt transmission component (1507) is fixed on one side of the first belt transmission component (1506).

8. A precision cooling device for a plastic mold according to claim 7, characterized in that: Worms (1508) are fixed to both output ends of the first belt drive assembly (1506) and one output end of the second belt drive assembly (1507), and the worms (1508) are rotatably connected to one side of the filter tank (1501). A worm wheel (1509) is meshed with the front side of the worm (1508), and the worm wheel (1509) is rotatably connected to the inside of the filter tank (1501). A water guide ring (1510) is fixed to the bottom of the worm wheel (1509), and the water guide ring (1510) is arranged in a one-to-one correspondence with the filter cotton (1504) up and down.

9. The precision cooling device for a plastic mold according to claim 5, characterized in that: A water pump (1511) is fixed to the inner bottom of the filter tank (1501), and a second return water pipe (1512) is fixed to the top of the water pump (1511). The second return water pipe (1512) penetrates through the top of the filter tank (1501) and extends into the storage tank mechanism (2).

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