Cooling device for injection molding production

Abstract

The cooling device comprises a water tank, a temperature control assembly, a motor, a rotating plate and a water pump, the water tank comprises a constant-temperature pool and a backflow pool which are adjacent to each other, a water inlet is formed in one side of the constant-temperature pool, an overflow opening is formed in the other side of the constant-temperature pool, the backflow pool is located below the overflow opening, and a water outlet is formed in the backflow pool. The motor is connected to the side face of the constant temperature pool, the output end of the motor is connected with the rotating plate, the rotating plate is of a net structure, the rotating plate and the side face where the water inlet is located form a rectangular water inlet area, and the rotating plate rotates from top to bottom in the water inlet area. The device adopts a stepped cooling mode, so that not only is the production efficiency improved, but also the energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molded products, and particularly relates to a cooling device for injection molding production. Background Art

[0002] Injection molding is a method for producing industrial product shapes. During injection molding production, high-temperature molten plastic is injected into a mold, and the injection molded product is formed by liquid cooling, and then the mold is pushed out to complete the entire injection molding process. When producing thin-walled products, since the liquid cooling has a relatively fast cooling rate for the injection molded product, it causes relatively large internal stress in the injection molded product, and problems such as warping and cracking are likely to occur. During the actual production process, cooling water at a certain temperature needs to be used for a long time to ensure that the quality of the injection molded product meets the requirements, thereby reducing the production efficiency. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model provides a cooling device for injection molding production, which adopts a stepped cooling method, improving the production efficiency and reducing energy consumption.

[0004] The technical solution of the utility model is as follows: A cooling device for injection molding production includes a water tank, a temperature control component, a motor, a rotating plate, and a water pump. The water tank includes an adjacent constant temperature pool and a return pool. One side of the constant temperature pool is provided with a water inlet, and the other side is provided with an overflow port. The return pool is located below the overflow port, and a water outlet is provided in the return pool. The water outlet is connected to the water inlet through a water pump. The temperature control component is connected in the constant temperature pool, the motor is connected to the side of the constant temperature pool, the output end of the motor is connected to the rotating plate, the rotating plate is a mesh structure, and the rotating plate and the side where the water inlet is located form a rectangular water inlet area, and the rotating plate rotates from top to bottom in the water inlet area.

[0005] Further, the output end of the motor is connected to a rotating shaft, and there are four rotating plates which are circumferentially arrayed on the rotating shaft.

[0006] Further, an upper water tank is provided on one side of the constant temperature pool. The side of the upper water tank is communicated with the water inlet, and the lower end of the upper water tank is connected to the water pump through a pipeline.

[0007] Further, a fence is provided on one side of the constant temperature pool. The water inlet is located in the fence, and the upper water tank is located on the side of the fence.

[0008] Further, a slideway is also included. The slideway is connected to the fence, the slideway is inclined, the cross section of the slideway is U-shaped, and the slideway leads to the water inlet area.

[0009] Further, the lower end of the slideway is rotatably connected to the fence.

[0010] Further, an installation platform is provided on the surrounding plate. A through hole is provided in the installation platform. A threaded post is provided at the lower end of the slideway. The threaded post can be inserted into the through hole. A nut is threadedly connected to the threaded post. The upper end surface of the nut abuts against the lower end surface of the installation platform.

[0011] Further, a water replenishing pipe is provided on the side of the constant temperature pool, and a drain pipe is provided at the bottom of the constant temperature pool.

[0012] Further, a liquid level sensor is provided in the constant temperature pool, and the liquid level sensor is flush with the overflow port.

[0013] Further, the temperature control component includes a temperature sensor and a heating pipe. The temperature sensor is installed in the constant temperature pool, and the heating pipe is installed at the bottom of the constant temperature pool. The temperature sensor is electrically connected to the heating pipe.

[0014] Further, a water drainage plate is provided on the side of the constant temperature pool, and the water drainage plate is located below the overflow port.

[0015] Further, a draining rack is also included. Installation grooves are provided on both sides of the return pool. The draining rack can be embedded in the installation grooves, and the draining rack is located below the water drainage plate.

[0016] Further, handles are provided on both sides of the draining rack.

[0017] Further, a bottom plate is provided at the bottom of the water tank, and universal wheels are provided at the lower end of the bottom plate.

[0018] Compared with the prior art, the advantages of the present utility model are as follows: adopting a stepped cooling method, minimizing problems such as excessive internal stress and warping in the injection molded product, and enabling the production of the next injection molded product after the injection molded product is quickly demolded, which not only improves production efficiency but also reduces the energy loss caused by the temperature loss of the mold after liquid cooling demolding in the traditional technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of the present utility model from a top view angle;

[0021] Figure 2 It is a top view of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the present utility model from a front view angle;

[0023] Figure 4 This is the usage state diagram of the present utility model;

[0024] Figure 5 This is the structural schematic diagram of the slideway of the present utility model.

[0025] Wherein: 1. Water tank; 2. Constant temperature pool; 201. Overflow port; 3. Return flow pool; 301. Installation groove; 302. Water outlet; 4. Enclosure board; 401. Water inlet; 5. Upper water pool; 6. Installation table; 601. Through hole; 7. Nut; 8. Slideway; 801. Threaded column; 9. Motor; 10. Rotating shaft; 11. Rotating plate; 12. Water pump; 13. Liquid level sensor; 14. Temperature sensor; 15. Heating pipe; 16. Drainage plate; 17. Make-up water pipe; 18. Drain pipe; 19. Drainage rack; 20. Handle. Specific embodiments

[0026] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined invention purpose, the following, in conjunction with the attached drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present utility model as follows.

[0027] As Figures 1-5 shown, a cooling device for injection molding production includes a water tank 1, a temperature control component, a motor 9, a rotating plate 11 and a water pump 12. The water tank 1 includes an adjacent constant temperature pool 2 and a return flow pool 3. One side of the constant temperature pool 2 is provided with a water inlet 401, and the other side is provided with an overflow port 201. The return flow pool 3 is located below the overflow port 201. A water outlet 302 is provided in the return flow pool 3. The water outlet 302 is connected to the water inlet 401 through the water pump 12. The temperature control component is connected inside the constant temperature pool 2. The motor 9 is connected to the side of the constant temperature pool 2. The output end of the motor 9 is connected to the rotating plate 11. The rotating plate 11 is a mesh structure. The rotating plate 11 and the side where the water inlet 401 is located form a rectangular water inlet area. The rotating plate 11 rotates from top to bottom in the water inlet area. During the injection molding production process, after the injection molded product is demolded, it falls into the water inlet area of this device. Under the control of the motor 9, the mesh-structured rotating plate 11 rotates and presses the injection molded product floating on the water surface of the water inlet area into the hot water, so that the high-temperature injection molded product is cooled and insulated in all directions, preventing excessive local deformation caused by too fast cooling of the injection molded product and ensuring that the quality of the injection molded product meets the requirements. After being rotated and pressed by the rotating plate 11, the injection molded product floats out of the water surface on the other side, and the water inlet 401 and the water outlet 302 guide the water flow. The injection molded product follows the water flow to the overflow port 201 and drops from the overflow port 201 for collection.

[0028] In the above embodiment, the output end of the motor 9 is connected to the rotating shaft 10. There are four rotating plates 11 which are circumferentially arrayed on the rotating shaft 10. Four identical buffer areas are formed between the four rotating plates 11. By controlling the motor 9, the four buffer areas are successively immersed in hot water to form a cycle. One side of the constant temperature pool 2 is provided with an upper water pool 5. The side of the upper water pool 5 communicates with the water inlet 401. The lower end of the upper water pool 5 is connected to the water pump 12 through a pipeline. The upper water pool 5 stores and transitions the circulating water flow, and makes the water flow form a waterfall shape through the horizontally arranged water inlet 401, so that the water flow direction is stable, which is beneficial for the injection molded product to be more easily separated from the buffer area when immersed in and floating out of the water surface. One side of the constant temperature pool 2 is provided with a fence 4. The water inlet 401 is located in the fence 4, and the upper water pool 5 is located on the side of the fence 4. The fence 4 raises and protects the constant temperature pool 2 to prevent the injection molded product from detaching and the water splash from splashing out.

[0029] The device further includes a slideway 8. The slideway 8 is connected to the fence 4. The slideway 8 is inclined. The cross section of the slideway 8 is U-shaped. The slideway 8 leads to the water inlet area. The upper end of the slideway 8 can extend under the injection mold to facilitate catching the injection molded product that falls off during demolding, and let the injection molded product slide along the slideway 8 to the water inlet area. The lower end of the slideway 8 is rotatably connected to the fence 4, and the receiving angle can be adjusted to accurately catch the injection molded product. An installation platform 6 is provided on the fence 4. A through hole 601 is provided in the installation platform 6. A threaded column 801 is provided at the lower end of the slideway 8. The threaded column 801 can be inserted into the through hole 601. A nut 7 is threadedly connected to the threaded column 801. The upper end surface of the nut 7 abuts against the lower end surface of the installation platform 6. After adjusting the angle of the slideway 8, it is locked by the nut 7 to prevent the slideway 8 from deviating from the accurate receiving position.

[0030] In the above embodiment, a water replenishing pipe 17 is provided on the side of the constant temperature pool 2, and a drain pipe 18 is provided at the bottom of the constant temperature pool 2, which is convenient for maintaining the water level in the constant temperature pool 2 to ensure the cooling and heat preservation effects of the injection molded product, and also maintains a large drainage volume at the overflow port 201 of the water flow, accelerating the water flow rate, so as to ensure that the injection molded product can quickly separate from the buffer area. A liquid level sensor 13 is provided in the constant temperature pool 2. The liquid level sensor 13 is flush with the overflow port 201 and is used to monitor the liquid level height. It can be linked with an external water pumping component to automatically replenish and drain water through the water replenishing pipe 17 and the drain pipe 18, and always keep the liquid level height stable. The temperature control component includes a temperature sensor 14 and a heating pipe 15. The temperature sensor 14 is installed in the constant temperature pool 2, and the heating pipe 15 is installed at the bottom of the constant temperature pool 2. The temperature sensor 14 and the heating pipe 15 are electrically connected. The water temperature is monitored in real time through the temperature sensor 14, and the water temperature is kept within the set range through the heating pipe 15 to keep the cooling and heat preservation effects of the injection molded product stable. A water drainage plate 16 is provided on the side of the constant temperature pool 2. The water drainage plate 16 is located below the overflow port 201. The water drainage plate 16 extends from the side of the constant temperature pool 2 to prevent the water flow from flowing along the side of the constant temperature pool 2 to the periphery and causing water accumulation on the ground.

[0031] The device further includes a draining rack 19. Installation grooves 301 are provided on both sides of the reflux pool 3. The draining rack 19 can be embedded in the installation grooves 301 and is located below the water discharge plate 16. The injection molded products can be received and collected by the draining rack 19 without affecting the repeated use of the water flow. After the draining rack 19 is full, a new draining rack 19 can be replaced, and the draining rack 19 filled with injection molded products can be transported to a specific area for draining or drying the injection molded products. Handles 20 are provided on both sides of the draining rack 19 for easy operation by the operator. A bottom plate is provided at the bottom of the water tank 1, and universal wheels are provided at the lower end of the bottom, so that the device can be transformed into a trolley type. When specific injection molded products do not need to be produced, the device can be moved to the warehouse.

[0032] The working mode of the present utility model is described as follows:

[0033] During the injection molding production process of plastic toys, the injection temperature of the molten plastic is mostly between 240 - 280 °C. After injection molding, the injection molded product is briefly cooled by liquid cooling. When the temperature of the injection molded product reaches the demolding condition, it is pushed out of the mold. At this time, the temperature of the injection molded product is between 140 - 180 °C. Before using this device, the constant temperature pool 2 is filled with water and the water flow can be recycled repeatedly. The water temperature is heated to about 80 °C to provide cooling and heat preservation for the high-temperature injection molded product. After the injection molded product is demolded, it falls into the slideway 8 of this device and drops along the slideway 8 into the water inlet area. The rotating plate 11 presses the injection molded product into the water. The movements of the motor 9 and the rotating plate 11 are intermittent movements. Each time, it rotates 90°. And after each rotation, the rotating plate 11 is in the horizontal or vertical direction. The buffer area between the rotating plates 11 is divided into four quadrants. According to the rotation direction of the motor 9, the injection molded product is located in the first quadrant and then enters the fourth quadrant, the third quadrant, and the second quadrant in sequence. When it is in the fourth quadrant and the third quadrant, the injection molded product is immersed in water for sufficient cooling and heat preservation. The temperature of the injection molded product slowly approaches 80 °C. During the process when the injection molded product wants to enter the second quadrant from the third quadrant, the injection molded product floats out of the water surface. At this time, driven by the water flow in the constant temperature pool 2, the injection molded product drifts towards the overflow port 201 and drops from the drain plate 16 into the draining rack 19, and is collected by the draining rack 19. At this time, the actual temperature of the injection molded product is about 90 °C and it gradually cools down under the influence of the air. After the draining rack 19 is filled with injection molded products, a new draining rack 19 is replaced and the draining rack 19 filled with injection molded products is moved to the draining area for sufficient draining and air cooling, so that the injection molded product gradually cools down to room temperature. During the entire cooling process of the injection molded product, from about the highest 280 °C, it is cooled by liquid cooling in the injection mold to about the highest 180 °C, then cooled to about 90 °C in the constant temperature pool 2 and heat preservation is carried out, and finally the injection molded product is naturally cooled to room temperature. This stepped cooling method minimizes problems such as excessive internal stress and warping of the injection molded product. And after the injection molded product is quickly demolded, the production of the next injection molded product can be carried out, which not only improves the production efficiency but also reduces the energy loss caused by the temperature loss of the mold after liquid cooling demolding in the traditional technology.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit 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 or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling device for injection molding production, comprising a water tank, a temperature control component, a motor, a rotating plate and a water pump, characterized in that: The water tank includes an adjacent constant temperature pool and a return pool. An inlet is provided on one side of the constant temperature pool, and an overflow outlet is provided on the other side. The return pool is located below the overflow outlet, and a water outlet is provided in the return pool. The water outlet is connected to the inlet through a water pump. The temperature control component is connected inside the constant temperature pool. The motor is connected to the side of the constant temperature pool, and the output end of the motor is connected to a rotating plate. The rotating plate is of a mesh structure. The rotating plate and the side where the inlet is located form a rectangular water inlet area, and the rotating plate rotates from top to bottom in the water inlet area.

2. The cooling device for injection molding production according to claim 1, characterized in that: The output end of the motor is connected to a rotating shaft, and there are four rotating plates which are arranged in a circumferential array on the rotating shaft.

3. The cooling device for injection molding production according to claim 1, wherein: An upper water tank is provided on one side of the constant temperature pool. The side of the upper water tank communicates with the inlet, and the lower end of the upper water tank is connected to the water pump through a pipeline.

4. The cooling device for injection molding production according to claim 3, characterized in that: A retaining plate is provided on one side of the constant temperature pool. The inlet is located in the retaining plate, and the upper water tank is located on the side of the retaining plate.

5. The cooling device for injection molding production according to claim 4, characterized in that: It further includes a slideway. The slideway is connected to the retaining plate. The slideway is inclined, and the cross-section of the slideway is U-shaped. The slideway leads to the water inlet area, and the lower end of the slideway is rotatably connected to the retaining plate.

6. The cooling device for injection molding production according to claim 5, characterized in that: An installation platform is provided on the retaining plate. A through hole is provided in the installation platform. A threaded column is provided at the lower end of the slideway. The threaded column can be inserted into the through hole, and a nut is threadedly connected to the threaded column. The upper end surface of the nut abuts against the lower end surface of the installation platform.

7. The cooling device for injection molding production according to claim 1, wherein: A water replenishing pipe is provided on the side of the constant temperature pool, and a drain pipe is provided at the bottom of the constant temperature pool. A liquid level sensor is provided inside the constant temperature pool, and the liquid level sensor is flush with the overflow outlet.

8. The cooling device for injection molding production according to claim 1, wherein: The temperature control component includes a temperature sensor and a heating pipe. The temperature sensor is installed inside the constant temperature pool, and the heating pipe is installed at the bottom of the constant temperature pool. The temperature sensor and the heating pipe are electrically connected.

9. The cooling device for injection molding production according to claim 1, characterized in that: A water draining plate is provided on the side of the constant temperature pool, and the water draining plate is located below the overflow outlet.

10. The cooling device for injection molding production according to claim 9, wherein: It further includes a water draining rack. Installation grooves are provided on both sides of the return pool. The water draining rack can be embedded in the installation grooves. The water draining rack is located below the water draining plate, and handles are provided on both sides of the water draining rack.

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