Motor cover injection molding device

Abstract

This utility model discloses an injection molding device for motor covers, including a base plate. A vertical plate is fixedly installed on one side of the base plate, and a mold is fixedly installed on one side of the vertical plate. A second mold is provided on one side of the mold. The second mold has a cavity inside, and a cooling ring plate is fixedly installed along the outer side of the cavity inside the second mold. A heat exchange tube is fixedly installed inside the cooling ring plate, and the heat exchange tube is spirally arranged. A cooling side plate is fixedly installed along one side of the cavity inside the second mold, and a second heat exchange tube is provided inside the cooling side plate, communicating with the first heat exchange tube. This device achieves auxiliary cooling molding capability, increases practicality, and solves the problem that the long natural cooling time required during motor cover injection molding affects production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding equipment, specifically an injection molding equipment for a motor cover. Background Technology

[0002] The motor cover is one of the components of the motor. Its main function is to protect the internal structure of the motor and prevent external dust, moisture, foreign objects and other objects from entering the motor. The motor cover injection molding device is the equipment used to produce the motor cover. Its working principle is to heat the plastic granules to a molten state through the injection molding machine, and then inject the molten plastic into the mold cavity through the nozzle and the mold gating system for injection molding. For example, the authorized patent with announcement number CN214082644U (a product injection molding device) includes a base, a fixing mechanism mounted on the base, a mold mounted in the fixing mechanism, and an inclined ejector mechanism used in conjunction with the mold; the mold includes a mold cavity for molding products; the inclined ejector mechanism includes an inclined ejector rod with one end rotatably connected to the base and the other end connected to the mold, the end of the inclined ejector rod connected to the mold cavity is provided with a protrusion for molding products, the inclined ejector rod includes a first rod portion connected to the base and a second rod portion provided with the protrusion, a first inclined guide surface is provided between the first rod portion and the second rod portion; the mold is provided with a hollow cavity used in conjunction with the second rod portion. While the aforementioned existing technologies facilitate product demolding and use, they lack auxiliary cooling structures. Consequently, during the injection molding of the motor cover, a relatively long natural cooling time is required, affecting the production efficiency of the motor cover. Therefore, there is an urgent market need to develop an injection molding device for motor covers to help solve the existing problems. Utility Model Content

[0003] The purpose of this invention is to provide an injection molding device for motor covers, so as to solve the problem mentioned in the background art that the injection molding of motor covers requires a long time for natural cooling and molding, which affects the production efficiency of motor covers.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a motor cover injection molding device, including a device base plate, a vertical plate 1 fixedly installed on one side of the device base plate, a mold 1 fixedly installed on one side of the vertical plate 1, a mold 2 provided on one side of the mold 1, a cavity provided inside the mold 2, a cooling ring plate fixedly installed inside the mold 2 along the outer side of the cavity, a heat exchange tube 1 fixedly installed inside the cooling ring plate, the heat exchange tube 1 being spirally arranged, a cooling side plate fixedly installed inside the mold 2 along one side of the cavity, a heat exchange tube 2 provided inside the cooling side plate, the heat exchange tube 2 being connected to the heat exchange tube 1.

[0005] Preferably, a water inlet pipe is fixedly installed on the upper part of the mold two, a component cavity is provided inside the mold two, a water supply pipe is fixedly installed on the upper part of the component cavity of the mold two, the water supply pipe is connected to the water inlet pipe, and a water distribution pipe is fixedly installed below the water supply pipe.

[0006] Preferably, an electric valve is fixedly installed below the water distribution pipe, and a water supply pipe is fixedly installed below the electric valve. The lower end of the water supply pipe is fixedly connected to one end of the heat exchange pipe. A water outlet pipe is fixedly installed at the front end of the mold, and the water outlet pipe is connected to the heat exchange pipe.

[0007] Preferably, a heating chamber is provided inside the mold second along one side of the cavity, an electric valve second is fixedly installed on one side of the water distribution pipe, a water supply pipe third is fixedly installed on one side of the electric valve second, one end of the water supply pipe third is connected to the heating chamber, and a partition is provided inside the heating chamber, and the partition is fixedly connected to the mold second.

[0008] Preferably, a flow guide plate is provided inside the heating chamber along one side of the partition, and multiple flow guide plates are provided. The multiple flow guide plates are arranged vertically at intervals and staggered. A water supply pipe four is fixedly installed inside the mold two along one side above the heating chamber. An electric valve three is fixedly installed at one end of the water supply pipe four, and the electric valve three is fixedly connected to the water supply pipe two.

[0009] Preferably, a second upright plate is fixedly installed on the other side above the base plate of the device, a hydraulic cylinder is fixedly installed on one side of the second upright plate, the piston rod end of the hydraulic cylinder is fixedly connected to the second mold, a stabilizing plate is fixedly installed on the outside of the hydraulic cylinder, and a supporting block is fixedly installed below the stabilizing plate, the supporting block being fixedly connected to the base plate of the device.

[0010] Preferably, stabilizing columns are symmetrically fixedly installed on the front and rear ends of one side of the mold, and one end of the stabilizing column slides through the stabilizing plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model sets a cooling ring plate and a cooling side plate inside the mold, and installs a spirally arranged heat exchange tube one and a heat exchange tube two in them respectively, which can cool the cavity, shorten the cooling time of the motor cover, avoid the production cycle extension caused by long-term natural cooling, and effectively improve production efficiency.

[0012] (2) This utility model provides a heating chamber along one side of the cavity inside the mold, and is equipped with components such as electric valve 2, water supply pipe 3, partition, flow guide plate and electric valve 3. During injection molding, the water is heated by heat exchange with the mold in the heating chamber, and then input into the heat exchange pipe 1 through water supply pipe 4 and water supply pipe 2. This prevents the direct input of cooling water with too low temperature into the heat exchange pipe 1, and avoids uneven flow of plastic melt in the cavity due to sudden drop in cavity temperature, which may lead to defects on the surface of the motor cover.

[0013] (3) The utility model has symmetrically fixed and installed stabilizing columns on the front and rear ends of one side of the mold. One end of the stabilizing column slides through the stabilizing plate. During the opening and closing process of the mold, the stabilizing column plays a guiding and limiting role, which improves the accuracy and stability of the mold opening and closing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the injection molding device for the motor cover of this utility model; Figure 2 This is a cross-sectional view of the mold of this utility model; Figure 3 This is an enlarged schematic diagram of part A of this utility model; Figure 4 This is an enlarged schematic diagram of part B of this utility model.

[0015] In the diagram: 1. Device base plate; 2. Vertical plate one; 3. Mold one; 4. Mold two; 401. Cavity; 402. Component cavity; 403. Heating cavity; 5. Vertical plate two; 6. Hydraulic cylinder; 7. Stabilizing plate; 8. Stabilizing column; 9. Water inlet pipe; 10. Water outlet pipe; 11. Cooling ring plate; 12. Heat exchanger tube one; 13. Cooling side plate; 14. Heat exchanger tube two; 15. Water supply pipe one; 16. Water distribution pipe; 17. Electric valve one; 18. Water supply pipe two; 19. Electric valve two; 20. Water supply pipe three; 21. Water supply pipe four; 22. Electric valve three; 23. Partition plate; 24. Drainage plate; 25. Support base block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Please see Figure 1-4This utility model provides an embodiment of a motor cover injection molding device, including a device base plate 1, a vertical plate 2 fixedly installed on one side of the device base plate 1, a mold 3 fixedly installed on one side of the vertical plate 2, a mold 4 on one side of the mold 3, a cavity 401 inside the mold 4, an injection hole inside the mold 3 for easy injection molding, a cooling ring plate 11 fixedly installed inside the mold 4 along the outer side of the cavity 401, a heat exchange tube 12 fixedly installed inside the cooling ring plate 11, the heat exchange tube 12 being spirally arranged, a cooling side plate 13 fixedly installed inside the mold 4 along one side of the cavity 401, both the cooling ring plate 11 and the cooling side plate 13 being made of die-cast aluminum alloy, a heat exchange tube 14 inside the cooling side plate 13, the heat exchange tube 14 being connected to the heat exchange tube 12, cooling water being introduced into the heat exchange tube 12 and then flowing into the heat exchange tube 14 to cool the cavity.

[0018] By setting a cooling ring plate 11 and a cooling side plate 13 inside the mold 2 4, and installing spirally arranged heat exchange tube 12 and heat exchange tube 2 14 respectively, and connecting the two, cooling water can flow. During the injection molding process, cooling water is introduced into heat exchange tube 12 and then flows into heat exchange tube 2 14, which can quickly remove the heat dissipated by the plastic melt in the cavity 401 and cool the cavity. This auxiliary cooling structure shortens the cooling time of the motor cover, avoids the production cycle extension caused by long-term natural cooling, and effectively improves production efficiency.

[0019] Please see Figure 1-4A water inlet pipe 9 is fixedly installed above the mold 2 4. A component cavity 402 is provided inside the mold 2 4. A water supply pipe 15 is fixedly installed above the component cavity 402 of the mold 2 4, and the water supply pipe 15 is connected to the water inlet pipe 9. A water distribution pipe 16 is fixedly installed below the water supply pipe 15. An electric valve 17 is fixedly installed below the water distribution pipe 16. A water supply pipe 18 is fixedly installed below the electric valve 17, and the lower end of the water supply pipe 18 is fixedly connected to one end of the heat exchange pipe 12. A water outlet pipe 10 is fixedly installed at the front end of the mold 2 4, and the water outlet pipe 10 is connected to the heat exchange pipe 14. A heating chamber 40 is provided inside the mold 2 4 along one side of the cavity 401. 3. An electric valve 29 is fixedly installed on one side of the water distribution pipe 16. A water supply pipe 30 is fixedly installed on one side of the electric valve 29. One end of the water supply pipe 320 is connected to the heating chamber 403. A partition 23 is provided inside the heating chamber 403, and the partition 23 is fixedly connected to the mold 24. A flow guide plate 24 is provided inside the heating chamber 403 along one side of the partition 23. Multiple flow guide plates 24 are provided and arranged vertically at intervals. A water supply pipe 41 is fixedly installed inside the mold 24 along one side above the heating chamber 403. An electric valve 322 is fixedly installed at one end of the water supply pipe 421, and the electric valve 322 is fixedly connected to the water supply pipe 218.

[0020] During injection molding, electric valve 17 can be closed, while electric valves 19 and 22 can be opened. Cooling water is first introduced into the heating chamber 403, where it exchanges heat with the mold to raise the temperature. Then, the water is introduced into the heat exchange pipe 12 through water pipes 21 and 28. This prevents the direct introduction of excessively cold cooling water into the heat exchange pipe 12, avoiding uneven flow of the molten plastic within the cavity due to a sudden drop in temperature, which could lead to defects on the surface of the motor cover. Simultaneously, the heated water is then introduced into the heat exchange pipe through water pipes 21 and 28. Compared to directly using low-temperature cooling water, the heated water entering heat exchange tube 12 provides a gentler cooling process for the mold cavity, reducing internal stress caused by excessively rapid cooling. This lowers the risk of deformation or cracking of the motor cover due to internal stress release during use, improving the mechanical properties and service life of the product. Furthermore, the multiple guide plates 24 guide the cooling water to form a tortuous flow path within the heating chamber 403, significantly increasing the contact area and contact time between the cooling water and the inner wall of the heating chamber 403, thereby improving heat exchange efficiency.

[0021] Please see Figure 1 A vertical plate 2 5 is fixedly installed on the other side above the device base plate 1. A hydraulic cylinder 6 is fixedly installed on one side of the vertical plate 2 5. The piston rod end of the hydraulic cylinder 6 is fixedly connected to the mold 2 4. A stabilizing plate 7 is fixedly installed on the outside of the hydraulic cylinder 6. A supporting block 25 is fixedly installed below the stabilizing plate 7. The supporting block 25 is fixedly connected to the device base plate 1.

[0022] As the component that drives the mold to open and close, the hydraulic cylinder 6 has the characteristics of strong power and smooth operation. It can provide sufficient closing force to ensure that the mold is tightly closed during the injection process and prevent molten plastic leakage. The setting of the stabilizing plate 7 and the supporting base block 25 greatly enhances the stability of the hydraulic cylinder 6, reduces the shaking and vibration of the hydraulic cylinder 6 during operation, and reduces the risk of damage to the mold and products caused by equipment instability.

[0023] Please see Figure 1 Stabilizing columns 8 are symmetrically fixedly installed on the front and rear ends of one side of mold 2 4, and one end of the stabilizing column 8 slides through the stabilizing plate 7.

[0024] During the opening and closing process of mold 24, the stabilizing column 8 plays a guiding and limiting role, ensuring that mold 24 moves along the predetermined straight trajectory, avoiding problems such as mold offset and shaking during movement, and improving the accuracy and stability of mold opening and closing.

[0025] Working principle: During use, hydraulic cylinder 6 drives mold 2 4 to move towards mold 1 3 to achieve mold closing. Stabilizing column 8 ensures precise alignment during the mold closing process. After the molten plastic is injected into cavity 401 by the external injection molding machine through the injection hole of mold 1 3, in the initial stage of molding and cooling, electric valve 1 17 is closed and electric valves 2 19 and 3 22 are opened. Cooling water first enters the heating chamber 403 and is guided by multiple staggered guide plates 24 to exchange heat with the mold and raise its temperature. Then, it enters heat exchange tube 1 12 through water pipe 4 21 and water pipe 2 18 to achieve gentle cooling and avoid stress on the product. After a certain period of time, electric valve 19 and electric valve 22 are closed and electric valve 17 is opened. Cooling water enters the spirally arranged heat exchange tube 12 through water supply pipe 15, water distribution pipe 16 and electric valve 17, and then flows through heat exchange tube 214 and is discharged from water outlet pipe 10, forming forced circulation cooling. Throughout the process, the support structure composed of stabilizing plate 7 and supporting base block 25 ensures the stability of hydraulic cylinder 6, while the symmetrically arranged stabilizing columns 8 ensure that mold 24 always moves in a straight line, thereby achieving high-efficiency and stable injection molding of motor cover.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A motor upper cover injection molding device, comprising a device bottom plate (1), characterized in that: A vertical plate (2) is fixedly installed on one side above the base plate (1) of the device. A mold (3) is fixedly installed on one side of the vertical plate (2). A mold (4) is provided on one side of the mold (3). A cavity (401) is provided inside the mold (4). A cooling ring plate (11) is fixedly installed inside the mold (4) along the outside of the cavity (401). A heat exchange tube (12) is fixedly installed inside the cooling ring plate (11). The heat exchange tube (12) is spirally arranged. A cooling side plate (13) is fixedly installed inside the mold (4) along one side of the cavity (401). A heat exchange tube (14) is provided inside the cooling side plate (13). The heat exchange tube (14) is connected to the heat exchange tube (12).

2. The over-mold apparatus of claim 1, wherein: A water inlet pipe (9) is fixedly installed on the upper part of the mold two (4). A component cavity (402) is provided inside the mold two (4). A water supply pipe (15) is fixedly installed on the upper part of the component cavity (402) of the mold two (4). The water supply pipe (15) is connected to the water inlet pipe (9). A water distribution pipe (16) is fixedly installed below the water supply pipe (15).

3. The over-mold apparatus of claim 2, wherein: An electric valve (17) is fixedly installed below the water distribution pipe (16), and a water supply pipe (18) is fixedly installed below the electric valve (17). The lower end of the water supply pipe (18) is fixedly connected to one end of the heat exchange pipe (12). A water outlet pipe (10) is fixedly installed at the front end of the mold (4), and the water outlet pipe (10) is connected to the heat exchange pipe (14).

4. The over-mold apparatus of claim 3, wherein: A heating chamber (403) is provided inside the mold (4) along one side of the cavity (401). An electric valve (19) is fixedly installed on one side of the water distribution pipe (16). A water supply pipe (20) is fixedly installed on one side of the electric valve (19). One end of the water supply pipe (20) is connected to the heating chamber (403). A partition (23) is provided inside the heating chamber (403), and the partition (23) is fixedly connected to the mold (4).

5. The over-mold apparatus of claim 4, wherein: Inside the heating chamber (403), a flow guide plate (24) is provided along one side of the partition plate (23), and multiple flow guide plates (24) are provided. The multiple flow guide plates (24) are arranged vertically at intervals and staggered. Inside the mold two (4), a water supply pipe four (21) is fixedly installed along one side above the heating chamber (403). An electric valve three (22) is fixedly installed at one end of the water supply pipe four (21), and the electric valve three (22) is fixedly connected to the water supply pipe two (18).

6. The over-mold apparatus of claim 1, wherein: A second vertical plate (5) is fixedly installed on the other side above the base plate (1) of the device. A hydraulic cylinder (6) is fixedly installed on one side of the second vertical plate (5). The piston rod end of the hydraulic cylinder (6) is fixedly connected to the mold (4). A stabilizing plate (7) is fixedly installed on the outside of the hydraulic cylinder (6). A supporting block (25) is fixedly installed below the stabilizing plate (7). The supporting block (25) is fixedly connected to the base plate (1) of the device.

7. The over-mold apparatus of claim 6, wherein: The front end and the rear end of one side of the mold two (4) are symmetrically fixed with stable columns (8), one end of the stable column (8) slides through the stable plate (7).

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