Plastic coil holder injection mold for motor rotor

Abstract

The utility model discloses a plastic coil holder injection mold for a motor rotor, which belongs to the technical field of injection molds and comprises a bottom plate, a lower mold is fixedly mounted on the upper surface of the bottom plate, an upper mold is arranged above the lower mold, an upper plate is fixedly connected to the upper surface of the upper mold, and an injection groove is formed in the upper surface of the lower mold. A cooler is arranged on the upper surface of the lower die, a jacking mechanism is arranged in the lower end of the lower die, a first cooling mechanism is arranged in the lower die, and a second cooling mechanism is arranged on the outer side of the lower die on the upper surface of the bottom plate. The cooling efficiency of the circulating water pipe on the plastic wire frame is greatly improved, and then improvement of the forming efficiency is promoted; and through the arrangement of the second cooling mechanism, the effect of cooling the ejected plastic wire rack again is achieved, and the situation that the surface of the plastic wire rack is not completely cooled, the plastic wire rack is contaminated with dust in the transportation process, and the quality of the plastic wire rack is reduced is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to a plastic wire frame injection mold for a motor rotor. Background Art

[0002] When producing plastic wire racks used in motor rotors, it is usually necessary to use injection molds to realize the processing and production of plastic wire racks. The Chinese patent announcement number is: CN216506463U A plastic shell injection mold, including a lower mold body, an upper mold body arranged above the lower mold body, a No. 1 driving cylinder installed at the lower end of the lower mold body, and a No. 2 driving cylinder installed at the upper end of the upper mold body. The injection mold adopts two sets of cylinder equipment on the upper and lower sides of the mold to eject the No. 1 ejection platform and the No. 2 ejection platform in a manner that the plastic shell is adhered to the upper mold body or the lower mold body. The molded plastic shell can be ejected from the mold. The automatic demoulding method avoids artificial forced pulling of the plastic shell to damage the structure. The No. 1 ejection platform and the No. 2 ejection platform use a horizontal plate structure. During the injection molding process, the overall thickness of the injection molded part can be adjusted by free lifting.

[0003] The problem with the prior art is that, in actual use, the above-mentioned injection mold does not have a cooling structure, so the molded parts must be cooled by themselves before demolding, which greatly reduces the demolding efficiency; moreover, if the surface of the demolded parts is not air-dried, they are prone to absorb dust during transportation, thereby affecting their quality. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a plastic wire frame injection mold for a motor rotor, which has the advantages of improving cooling efficiency and quality, and solves the problem that in actual use of the existing injection mold, due to the lack of a cooling structure, the molded parts must be cooled by themselves before demolding, which greatly reduces the demolding efficiency; moreover, if the surface of the demolded parts is not air-dried, they are prone to absorb dust during transportation, thereby affecting their quality.

[0005] The utility model is implemented as follows: a plastic wire frame injection mold for a motor rotor comprises a base plate, a lower mold is fixedly installed on the upper surface of the base plate, guide columns are fixedly installed at the four corners of the upper surface of the base plate, an upper mold is arranged above the lower mold, an upper plate is fixedly connected to the upper surface of the upper mold, the four corners of the upper plate slide along the outer surface of the guide column, an injection groove is opened on the upper surface of the lower mold, a lifting mechanism is arranged inside the lower end of the lower mold, a first cooling mechanism is arranged inside the lower mold, and a second cooling mechanism is arranged on the outer side of the lower mold located on the upper surface of the base plate.

[0006] As a preferred embodiment of the utility model, a cooling groove is opened in the lower mold located at the outer edge of the injection groove, a mounting groove is opened at the bottom end of the lower mold, sliding grooves are opened on both sides of the lower mold, the sliding grooves are connected with the mounting grooves, a top hole is opened on the lower surface of the injection groove, and the injection groove is connected with the mounting groove through the top hole.

[0007] As a preferred embodiment of the utility model, the lifting mechanism includes two telescopic rods, the two telescopic rods are fixedly installed in the installation groove, the output ends of the two telescopic rods are commonly fixedly connected to a top plate, and both sides of the top plate slide along the inner wall of the slide groove.

[0008] As a preferred embodiment of the utility model, each of the telescopic rods is provided with a spring, and both ends of the spring are respectively fixedly connected to the top wall of the mounting groove and the lower surface of the top plate, and both ends of the upper mold are fixedly connected to pressure rods, and the lower ends of the pressure rods are located directly above the two sides of the top plate, and the upper surface of the top plate is fixedly connected to a push rod, and the push rod moves in the injection molding groove through the top hole.

[0009] As a preferred embodiment of the utility model, the first cooling mechanism includes a circulating water pipe, the circulating water pipe is located in a cooling trough, a cooler is fixedly mounted on the upper surface of the bottom plate, and the cooler is located on one side of the lower mold.

[0010] As a preferred embodiment of the utility model, the water outlet and water inlet on the cooler are respectively fixedly connected with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are both fixedly connected to the circulating water pipe, water valves are fixedly installed on the water inlet pipe and the water outlet pipe, and the water inlet pipe and the water outlet pipe are both sleeved with fixed blocks, and the fixed blocks are fixedly connected to the outer wall of the lower mold.

[0011] As a preferred embodiment of the present invention, the second cooling mechanism includes two electric push rods, which are respectively located on the front and rear sides of the lower mold and are fixedly connected to the bottom plate, and the output end of each electric push rod is fixedly connected to a limiting block.

[0012] As a preferred embodiment of the utility model, the inner side of the limit block slides along the inner wall of the movable groove on the outer wall of the lower mold, and a cooling fan is fixedly installed on each of the limit blocks.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides the first cooling mechanism so that the water in the circulating water pipe can be cooled by the cooler, which greatly improves the cooling efficiency of the circulating water pipe on the plastic wire rack, thereby promoting the improvement of molding efficiency.

[0015] 2. The utility model has the effect of cooling the ejected plastic wire rack again by setting the second cooling mechanism, so as to prevent the surface from being contaminated with dust during transportation and reducing its quality because it has not been completely cooled.

[0016] 3. The utility model is conducive to demoulding the plastic wire frame after molding through the setting of the jacking mechanism, which improves the demoulding efficiency and prevents the damage to the plastic wire frame caused by manual demoulding, thereby improving the quality of the plastic wire frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial structural cutaway diagram of the utility model;

[0019] Figure 3 It is a three-dimensional schematic diagram of the first cooling mechanism of the utility model;

[0020] Figure 4 It is an exploded view of the local structure of the utility model.

[0021] In the figure: 1. bottom plate; 2. lower mold; 201. injection groove; 202. cooling groove; 203. mounting groove; 204. slide groove; 205. top hole; 3. guide column; 4. upper plate; 5. upper mold; 6. pressure rod; 7. lifting mechanism; 701. telescopic rod; 702. top plate; 703. spring; 704. ejector rod; 8. first cooling mechanism; 801. circulating water pipe; 802. water inlet pipe; 803. water outlet pipe; 804. cooler; 805. water valve; 806. fixing block; 9. second cooling mechanism; 901. electric push rod; 902. limit block; 903. cooling fan. DETAILED DESCRIPTION

[0022] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0023] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 4 As shown, an embodiment of the utility model provides a plastic wire frame injection mold for a motor rotor, comprising a base plate 1, a lower mold 2 is fixedly installed on the upper surface of the base plate 1, guide columns 3 are fixedly installed at the four corners of the upper surface of the base plate 1, an upper mold 5 is arranged above the lower mold 2, an upper plate 4 is fixedly connected to the upper surface of the upper mold 5, the four corners of the upper plate 4 slide along the outer surface of the guide column 3, an injection groove 201 is opened on the upper surface of the lower mold 2, a lifting mechanism 7 is arranged inside the lower end of the lower mold 2, a first cooling mechanism 8 is arranged inside the lower mold 2, and a second cooling mechanism 9 is arranged on the outer side of the lower mold 2 located on the upper surface of the base plate 1.

[0025] Furthermore, a cooling groove 202 is opened in the lower mold 2 located at the outer edge of the injection groove 201, a mounting groove 203 is opened at the bottom end of the lower mold 2, sliding grooves 204 are opened on both sides of the lower mold 2, and the sliding grooves 204 are connected to the mounting groove 203. A top hole 205 is opened on the lower surface of the injection groove 201, and the injection groove 201 is connected to the mounting groove 203 through the top hole 205.

[0026] In the present application, the setting of the cooling groove 202 facilitates the placement of the circulating water pipe 801, so that the water in the circulating water pipe 801 can cool the plastic wire frame after injection molding, thereby improving the molding efficiency; the setting of the top hole 205 facilitates the ejector rod 704 to eject the molded plastic wire frame through the top hole 205, and also serves as a limit for the ejector rod 704.

[0027] Furthermore, the lifting mechanism 7 includes two telescopic rods 701, and the two telescopic rods 701 are fixedly installed in the installation groove 203. The output ends of the two telescopic rods 701 are commonly fixedly connected to a top plate 702. Both sides of the top plate 702 slide along the inner wall of the slide groove 204. Each telescopic rod 701 is sleeved with a spring 703. Both ends of the spring 703 are respectively fixedly connected to the top wall of the installation groove 203 and the lower surface of the top plate 702. Both ends of the upper mold 5 are fixedly connected to a pressure rod 6. The lower end of the pressure rod 6 is located directly above the two sides of the top plate 702. The upper surface of the top plate 702 is fixedly connected to a push rod 704, and the push rod 704 moves in the injection groove 201 through the top hole 205.

[0028] In the present application, when the upper plate 4 moves downward under the drive of the driving mechanism, it will synchronously drive the movement of the two pressure rods 6. When the upper mold 5 moves down halfway, the lower ends of the pressure rods 6 just contact the two sides of the top plate 702, and then the upper mold 5 continues to move downward. At this time, the pressure rods 6 will squeeze the top plate 702 to move downward, and the two springs 703 are compressed. When the upper mold 5 is in close contact with the lower mold 2, the two telescopic rods 701 and the springs 703 are compressed to a critical state, and the top plate 702 drives a plurality of ejector rods 704 to move into the installation groove 203, and the upper ends of the ejector rods 704 just block the top holes 2. 05, and then the plastic is injected into the injection groove 201 through the unloading mechanism, and the injection molding of the plastic wire frame is completed with the cooperation of the injection groove 201; when the plastic wire frame after the injection molding is completed, it is cooled under the action of the first cooling mechanism 8, and then the upper mold 5 is driven upward by the driving mechanism again. At this time, the telescopic rod 701 and the spring 703 are slowly reset. When the pressure rod 6 is separated from the top plate 702, the spring 703 is completely reset. In this process, the top plate 702 drives the top rod 704 to move into the injection groove 201, and under the action of the top rod 704, the demoulding of the plastic wire frame is completed.

[0029] Furthermore, the first cooling mechanism 8 includes a circulating water pipe 801, which is located in the cooling trough 202. A cooler 804 is fixedly installed on the upper surface of the base plate 1, and the cooler 804 is located on one side of the lower mold 2. The water outlet and the water inlet on the cooler 804 are respectively fixedly connected with an inlet pipe 802 and an outlet pipe 803. The inlet pipe 802 and the outlet pipe 803 are both fixedly connected to the circulating water pipe 801. Water valves 805 are fixedly installed on the inlet pipe 802 and the outlet pipe 803. The inlet pipe 802 and the outlet pipe 803 are both covered with fixed blocks 806, and the fixed blocks 806 are fixedly connected to the outer wall of the lower mold 2.

[0030] In the present application, the circulating water pipe 801 is connected to an external water tank, and the water in the water tank is pumped into the circulating water pipe 801 to cool the plastic wire rack after injection molding. During the cooling process, the water in the circulating water pipe 801 flows into the cooler 804 through the outlet pipe 803, and then the water is cooled by the cooler 804, so that the cooled water flows into the circulating water pipe 801 again through the inlet pipe 802. Such a cycle can achieve the purpose of cooling the plastic wire rack.

[0031] Furthermore, the second cooling mechanism 9 includes two electric push rods 901, which are respectively located on the front and rear sides of the lower mold 2 and are fixedly connected to the base plate 1. The output end of each electric push rod 901 is fixedly connected to a limit block 902, and the inner side of the limit block 902 slides along the inner wall of the movable groove on the outer wall of the lower mold 2. A cooling fan 903 is fixedly installed on each limit block 902.

[0032] In the present application, after the cooled plastic wire rack is ejected from the injection molding slot 201, the two electric push rods 901 are started simultaneously, driving the limit block 902 to move upward, so that the two cooling fans 903 are moved to the top of the lower mold 2. Under the action of the two cooling fans 903, the plastic wire rack is further cooled to prevent its surface from being contaminated with dust during transportation due to not being completely cooled, thereby reducing its quality.

[0033] The working principle of this utility model:

[0034] When in use, the upper plate 4 is driven downward by the driving mechanism, and then the two pressure rods 6 are driven to move synchronously. When the upper mold 5 moves down halfway, the lower ends of the pressure rods 6 just contact the two sides of the top plate 702, and then the upper mold 5 continues to move downward. At this time, the pressure rods 6 will squeeze the top plate 702 to move downward, and the two springs 703 are compressed. When the upper mold 5 is in close contact with the lower mold 2, the two telescopic rods 701 and the springs 703 are compressed to a critical state, and the top plate 702 drives a number of ejector rods 704 to move to the installation groove. 203, the upper end of the ejector rod 704 just blocks the top hole 205, and then the plastic is injected into the injection tank 201 through the feeding mechanism. With the cooperation of the injection tank 201, the injection molding of the plastic wire frame is completed. Then, the circulating water pipe 801 is connected to the external water tank through the connecting pipe, and the water in the water tank is pumped into the circulating water pipe 801 to cool the plastic wire frame after injection molding. During the cooling process, the water in the circulating water pipe 801 is cooled by the cooler 804, thereby improving the cooling efficiency of the plastic wire frame;

[0035] After cooling is completed, the upper mold 5 is driven upward again by the driving mechanism. At this time, the telescopic rod 701 and the spring 703 are slowly reset. When the pressure rod 6 is separated from the top plate 702, the spring 703 is completely reset. During this process, the top plate 702 drives the ejector rod 704 to move into the injection groove 201. Under the action of the ejector rod 704, the plastic wire rack is demoulded.

[0036] Then, two electric push rods 901 are started simultaneously, driving two cooling fans 903 to move to the top of the lower mold 2. Under the action of the two cooling fans 903, the plastic wire rack is further cooled to prevent its surface from being contaminated with dust during transportation due to incomplete cooling, thereby reducing its quality.

[0037] In summary: in this plastic wire frame injection mold for a motor rotor, the water in the circulating water pipe 801 is cooled by the cooler 804 through the setting of the first cooling mechanism 8, which greatly improves the cooling efficiency of the circulating water pipe 801 on the plastic wire frame, thereby promoting the improvement of the molding efficiency; through the setting of the second cooling mechanism 9, the plastic wire frame after ejection is cooled again, thereby preventing its surface from being contaminated with dust during transportation due to not being completely cooled, thereby reducing its quality.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic wire frame injection mold for a motor rotor, comprising a base plate (1), characterized in that: A lower mold (2) is fixedly mounted on the upper surface of the bottom plate (1), guide columns (3) are fixedly mounted at the four corners of the upper surface of the bottom plate (1), an upper mold (5) is arranged above the lower mold (2), an upper plate (4) is fixedly connected to the upper surface of the upper mold (5), the four corners of the upper plate (4) slide along the outer surface of the guide columns (3), an injection groove (201) is opened on the upper surface of the lower mold (2), a lifting mechanism (7) is arranged inside the lower end of the lower mold (2), a first cooling mechanism (8) is arranged inside the lower mold (2), and a second cooling mechanism (9) is arranged outside the lower mold (2) located on the upper surface of the bottom plate (1).

2. The plastic wire frame injection mold for a motor rotor according to claim 1, characterized in that: A cooling groove (202) is provided in the lower mold (2) at the outer edge of the injection groove (201), a mounting groove (203) is provided at the bottom end of the lower mold (2), sliding grooves (204) are provided on both sides of the lower mold (2), the sliding grooves (204) are connected to the mounting groove (203), a top hole (205) is provided on the lower surface of the injection groove (201), and the injection groove (201) is connected to the mounting groove (203) through the top hole (205).

3. The plastic wire frame injection mold for a motor rotor according to claim 1, characterized in that: The lifting mechanism (7) comprises two telescopic rods (701), the two telescopic rods (701) are fixedly mounted in the mounting groove (203), the output ends of the two telescopic rods (701) are commonly fixedly connected to a top plate (702), and the two sides of the top plate (702) slide along the inner wall of the slide groove (204).

4. The plastic wire frame injection mold for a motor rotor as claimed in claim 3, characterized in that: Each telescopic rod (701) is sleeved with a spring (703), and the two ends of the spring (703) are respectively fixedly connected to the top wall of the installation groove (203) and the lower surface of the top plate (702). The two ends of the upper mold (5) are fixedly connected to a pressure rod (6), and the lower ends of the pressure rod (6) are located directly above the two sides of the top plate (702). The upper surface of the top plate (702) is fixedly connected to a push rod (704), and the push rod (704) moves in the injection groove (201) through the top hole (205).

5. The plastic wire frame injection mold for a motor rotor according to claim 2, characterized in that: The first cooling mechanism (8) comprises a circulating water pipe (801), the circulating water pipe (801) being located in the cooling trough (202), a cooler (804) being fixedly mounted on the upper surface of the bottom plate (1), the cooler (804) being located on one side of the lower mould (2).

6. The plastic wire frame injection mold for a motor rotor as claimed in claim 5, characterized in that: The water outlet and water inlet on the cooler (804) are respectively fixedly connected with a water inlet pipe (802) and a water outlet pipe (803); the water inlet pipe (802) and the water outlet pipe (803) are both fixedly connected to the circulating water pipe (801); water valves (805) are fixedly installed on the water inlet pipe (802) and the water outlet pipe (803); the water inlet pipe (802) and the water outlet pipe (803) are both sleeved with fixed blocks (806); the fixed blocks (806) are fixedly connected to the outer wall of the lower mold (2).

7. The plastic wire frame injection mold for a motor rotor according to claim 1, characterized in that: The second cooling mechanism (9) comprises two electric push rods (901), the two electric push rods (901) being respectively located at the front and rear sides of the lower mold (2) and both being fixedly connected to the bottom plate (1), and the output end of each electric push rod (901) being fixedly connected to a limit block (902).

8. The plastic wire frame injection mold for a motor rotor according to claim 7, characterized in that: The inner side of the limit block (902) slides along the inner wall of the movable groove on the outer wall of the lower mold (2), and a cooling fan (903) is fixedly mounted on each limit block (902).

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