Injection mold for electric bicycle plastic part production

Abstract

The utility model discloses an injection mold for electric bicycle plastic part production, which relates to the technical field of electric bicycle production and comprises a mold base, a fixed mold erected on the top surface of the mold base is fixedly mounted at the top end of the mold base, and a movable mold horizontally sliding in a reciprocating manner is arranged on the left side of the fixed mold. And a fixed rack erected on the top surface of the mold base is fixedly mounted at the top end of the mold base. The movable mold slides back and forth on the surface of the guide rod in the horizontal direction, the movable mold can be pushed back and forth to slide back and forth in the horizontal direction only through an independent small pneumatic cylinder, and therefore mold closing and mold splitting between the movable mold and the fixed mold are achieved, and the small pneumatic cylinder does not need to bear the weight of the movable mold. And only a small push-pull force is needed in the sliding process of the movable mold, so that the technical effects of low mold opening and closing power requirement and low energy loss are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycle production, in particular to an injection mold for producing plastic parts of electric bicycles. Background Art

[0002] The production of plastic parts for electric bicycles typically uses injection molds, a highly efficient manufacturing method suitable for large-scale production. Injection molds are tools that inject thermoplastic or thermosetting plastics into a mold and mold them into the desired shape through the effects of pressure and temperature.

[0003] At present, the production molds of electric vehicle plastic parts are mainly upper and lower mold thermoplastic molding. During the upper and lower mold thermoplastic molding process, the power required for the reciprocating separation and closing of the upper and lower molds is large, the energy loss is high, and the mold closing position is prone to inaccurate during the reciprocating separation and closing of the upper and lower molds, resulting in technical problems such as large burrs on the edges and corners of the molded plastic parts. Utility Model Content

[0004] In view of this, the purpose of the present utility model is to provide an injection mold for the production of electric bicycle plastic parts, so as to solve the technical problem that the current production molds of electric vehicle plastic parts are mainly upper and lower molds for thermoplastic molding. During the thermoplastic molding process of the upper and lower molds, the power required for the reciprocating separation and closing of the upper and lower molds is large, the energy loss is large, and the mold closing position is easily inaccurate when the upper and lower molds are reciprocating, resulting in large burrs on the edges and corners of the molded plastic parts.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] An injection mold for producing plastic parts for electric bicycles includes a mold base, a fixed mold upright on the top surface of the mold base is fixedly installed on the top of the mold base, a movable mold that slides back and forth horizontally is provided on the left side of the fixed mold, a fixed frame upright on the top surface of the mold base is fixedly installed on the top of the mold base, the movable mold is arranged in a position intermediate between the fixed frame and the fixed mold, a pneumatic cylinder is fixedly installed in the middle of the left end of the fixed frame, the pneumatic cylinder has a piston rod extending to the right, and the top end of the piston rod of the pneumatic cylinder is fixed to the left side of the movable mold.

[0007] As an optimal technical solution of the present invention, a plurality of guide rods are provided on the surface of the fixed frame, the other end of the guide rods is fixedly connected to the fixed frame, and a plurality of through circular holes are opened on the surface of the movable mold, and the circular holes on the surface of the movable mold are slidably connected to the corresponding guide rod surfaces.

[0008] As a preferred technical solution of the present invention, the surface of the movable mold is provided with a plurality of molds, and the surface of the fixed mold is provided with a cavity corresponding to the position of each mold.

[0009] As an optimal technical solution of the present invention, a water cooling cavity is provided inside the fixed mold, a cold water interface is provided on the side wall of the fixed mold, and the water cooling cavity inside the fixed mold is connected to the cold water interface on the side wall of the fixed mold.

[0010] As a preferred technical solution of the present invention, a connecting pipe opening is provided on the right side of each cavity, and the connecting pipe opening is fixed to the right side of the fixed mold.

[0011] As an optimal technical solution of the present utility model, an injection molding machine base is fixedly installed on the right side of the mold base, an injection molding machine barrel is fixedly installed on the top of the injection molding machine base, a hopper is fixedly installed on the top of the outer wall of the injection molding machine barrel, a servo motor is provided at the right end of the injection molding machine barrel, the bottom of the servo motor is fixed on the injection molding machine base, a diverter cylinder is fixed at the left end of the injection molding machine barrel, and a plurality of feed pipes are provided on the outer wall of the diverter cylinder according to the circumference, and each of the feed pipes is connected to the corresponding connecting pipe port.

[0012] The utility model has a fixed mold fixedly installed on the top of the mold base, which is upright on the top surface of the mold base; a movable mold that slides back and forth horizontally is provided on the left side of the fixed mold; a fixed frame upright on the top surface of the mold base is fixedly installed on the top of the mold base; the movable mold is arranged in the middle position between the fixed frame and the fixed mold; a pneumatic cylinder is fixedly installed on the middle part of the left end of the fixed frame; the pneumatic cylinder has a piston rod extending to the right; the top end of the piston rod of the pneumatic cylinder is fixed to the left side of the movable mold; the movable mold slides back and forth horizontally on the surface of the guide rod through the movable mold; only a separate small pneumatic cylinder is needed to push the movable mold back and forth to slide horizontally, thereby realizing mold closing and mold separation between the movable and fixed molds; the small pneumatic cylinder does not need to bear the weight of the movable mold itself, so that only a small push-pull force is required during the sliding process of the movable mold, thereby achieving the technical effect of low power demand for mold separation and low energy loss.

[0013] The utility model drives the movable mold to slide back and forth between the fixed mold and the fixed frame through the pneumatic cylinder, so that the movable mold and the fixed mold can fit closely with each other for mold closing, and the movable mold can be separated from the fixed mold along a predetermined trajectory through the guidance of the guide rod. After the separation process, the movable mold can be accurately closed along the predetermined trajectory during the next mold closing along the guidance of the guide rod, thereby realizing automatic mold separation and closing, and can improve the accuracy of secondary mold closing during the mold separation and closing process.

[0014] The utility model is provided with a mold on the surface of the movable mold, and a cavity is opened on the surface of the fixed mold. When the movable mold and the fixed mold are closed, the mold will be inserted into the cavity, and the gap between the mold and the cavity is utilized to make the injection molded part be shaped and formed in the gap between the mold and the cavity. In addition, a water-cooling cavity is provided inside the fixed mold, and the water-cooling cavity is utilized to reduce the temperature of the cavity wall of the fixed mold, so that the surface of the injection molded part at the gap between the mold and the cavity is quickly cooled and shaped. The cooling and molding direction of the injection molded part is to first gradually reduce the temperature from the injection molded part close to the cavity surface to the middle to be shaped, so that the molded injection molded part is easy to demold from the cavity wall surface, thereby facilitating automatic demolding. After demolding, the molded injection molded part will adhere to the mold surface and separate to the left from the movable mold. At this time, the plastic part is quickly removed from the mold by hand to obtain the molded electric bicycle plastic part, thereby realizing batch injection molding.

[0015] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance and structure of the injection mold for producing electric bicycle plastic parts of the utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of an injection mold for producing plastic parts for electric bicycles according to the present invention;

[0018] Figure 3 This is a left-side structural schematic diagram of the fixed mold of the utility model;

[0019] In the figure: 1. Mold base; 2. Injection molding machine base; 3. Servo motor; 4. Hopper; 5. Injection molding machine barrel; 6. Diverter tube; 7. Feed pipe; 8. Connecting nozzle; 9. Fixed mold; 10. Guide rod; 11. Fixed frame; 12. Pneumatic cylinder; 13. Mold; 14. Moving mold; 15. Cold water interface; 16. Water-cooling channel; 17. Cavity. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0023] In the above description of the present invention, it should be noted that the terms "one side" and "the other side" and the like indicate positions or locations based on the positions or locations shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0024] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to a more perpendicular relationship between components than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted. Example 1

[0025] See also Figure 1-3 , which is a technical solution provided by the utility model: an injection mold for the production of electric bicycle plastic parts, including a mold base 1, a fixed mold 9 upright on the top surface of the mold base 1 is fixedly installed on the top of the mold base 1, and a movable mold 14 that slides back and forth horizontally is provided on the left side of the fixed mold 9. A fixed frame 11 upright on the top surface of the mold base 1 is fixedly installed on the top of the mold base 1, and the movable mold 14 is arranged in the middle position between the fixed frame 11 and the fixed mold 9. A pneumatic cylinder 12 is fixedly installed in the middle of the left end of the fixed frame 11, and the pneumatic cylinder 12 has a piston rod extending to the right, and the top of the piston rod of the pneumatic cylinder 12 is fixed to the left side of the movable mold 14.

[0026] Specifically, in the embodiment, the utility model is achieved by fixing a fixed mold upright on the top of the mold base, a movable mold that slides back and forth horizontally is provided on the left side of the fixed mold, a fixed frame upright on the top of the mold base is fixedly installed on the top of the mold base, the movable mold is arranged in the middle position between the fixed frame and the fixed mold, a pneumatic cylinder is fixedly installed in the middle of the left end of the fixed frame, a piston rod is extended to the right by the pneumatic cylinder, the top of the piston rod of the pneumatic cylinder is fixed to the left side of the movable mold, and the movable mold is slid back and forth horizontally on the surface of the guide rod through the movable mold. Only a separate small pneumatic cylinder is needed to push the movable mold back and forth to slide horizontally, thereby realizing the closing and opening of the movable and fixed molds. The small pneumatic cylinder does not need to bear the weight of the movable mold itself, so that only a small push-pull force is required during the sliding process of the movable mold, thereby achieving the technical effect of low power demand for closing and opening of the mold and low energy loss.

[0027] Several guide rods 10 are provided on the surface of the fixed frame 11, and the other end of the guide rod 10 is fixedly connected to the fixed frame 11. Several through circular holes are opened on the surface of the movable mold 14, and the circular holes on the surface of the movable mold 14 are slidably connected to the corresponding surfaces of the guide rod 10.

[0028] The utility model drives the movable mold to slide back and forth between the fixed mold and the fixed frame through the pneumatic cylinder, so that the movable mold and the fixed mold can fit closely with each other for mold closing, and the movable mold can be separated from the fixed mold along a predetermined trajectory through the guidance of the guide rod. After the separation process, the movable mold can be accurately closed along the predetermined trajectory during the next mold closing along the guidance of the guide rod, thereby realizing automatic mold separation and closing, and can improve the accuracy of secondary mold closing during the mold separation and closing process.

[0029] The surface of the movable mold 14 is provided with several molds 13, and the surface of the fixed mold 9 is provided with a cavity 17 corresponding to the position of each mold 13. The interior of the fixed mold 9 is provided with a water-cooling cavity 16, and the water-cooling cavity 16 passes through the interior of the fixed mold 9 along the surface of each cavity 17, so that the cold water flows to take away the heat around the cavity 17 and dissipate heat for the surface of the cavity 17. The side wall of the fixed mold 9 is provided with a cold water interface 15. The water-cooling cavity 16 inside the fixed mold 9 is connected to the cold water interface 15 on the side wall of the fixed mold 9. The cold water interface 15 is convenient for connection to an external water supply source to realize water heat exchange supply.

[0030] Specifically, in the embodiment, the utility model is provided with a mold on the surface of the movable mold, and a cavity is opened on the surface of the fixed mold. When the movable mold and the fixed mold are closed, the mold will be inserted into the cavity, and the gap between the mold and the cavity is utilized to make the injection molded part be shaped and formed in the gap between the mold and the cavity, and a water-cooling cavity is provided inside the fixed mold, and the water-cooling cavity is utilized to reduce the temperature of the cavity wall of the fixed mold, so that the surface of the injection molded part at the gap between the mold and the cavity is quickly cooled and shaped, and the cooling and molding direction of the injection molded part is to gradually reduce the temperature from the injection molded part close to the cavity surface to the middle, so that the molded injection molded part is easy to demold from the cavity wall surface, thereby facilitating automatic demolding. After demolding, the molded injection molded part will adhere to the mold surface and separate to the left from the movable mold. At this time, the plastic part is quickly removed from the mold by hand to obtain the molded electric bicycle plastic part, thereby realizing batch injection molding. Example 2

[0031] See also Figure 1-3 , which is another technical solution provided by the present utility model. This embodiment is similar to the above-mentioned embodiment 1, and the similarities are not elaborated in this embodiment. The specific differences are:

[0032] Specifically, in the embodiment, the utility model is achieved by fixing a fixed mold upright on the top of the mold base, a movable mold that slides back and forth horizontally is provided on the left side of the fixed mold, a fixed frame upright on the top of the mold base is fixedly installed on the top of the mold base, the movable mold is arranged in the middle position between the fixed frame and the fixed mold, a pneumatic cylinder is fixedly installed in the middle of the left end of the fixed frame, a piston rod is extended to the right by the pneumatic cylinder, the top of the piston rod of the pneumatic cylinder is fixed to the left side of the movable mold, and the movable mold is slid back and forth horizontally on the surface of the guide rod through the movable mold. Only a separate small pneumatic cylinder is needed to push the movable mold back and forth to slide horizontally, thereby realizing the closing and opening of the movable and fixed molds. The small pneumatic cylinder does not need to bear the weight of the movable mold itself, so that only a small push-pull force is required during the sliding process of the movable mold, thereby achieving the technical effect of low power demand for closing and opening of the mold and low energy loss.

[0033] A connecting pipe opening 8 is provided on the right side of each cavity 17 , and the connecting pipe opening 8 is fixed to the right side of the fixed mold 9 .

[0034] An injection molding machine base 2 is fixedly installed on the right side of the mold base 1, an injection molding machine base 2 is fixedly installed on the top of the injection molding machine base 2, a hopper 4 is fixedly installed on the top of the outer wall of the injection molding machine barrel 5, a servo motor 3 is provided at the right end of the injection molding machine barrel 5, and the bottom of the servo motor 3 is fixed on the injection molding machine base 2. A diverter tube 6 is fixed at the left end of the injection molding machine barrel 5, and a plurality of feed pipes 7 are provided on the outer wall of the diverter tube 6 according to the circumference, and each feed pipe 7 is connected to the corresponding connecting pipe port 8.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An injection mold for producing electric bicycle plastic parts, comprising a mold base (1), characterized in that: The top of the mold base (1) is fixedly mounted with a fixed mold (9) standing upright on the top surface of the mold base (1), and a movable mold (14) that slides back and forth horizontally is arranged on the left side of the fixed mold (9). The top of the mold base (1) is fixedly mounted with a fixed frame (11) standing upright on the top surface of the mold base (1), and the movable mold (14) is arranged in the middle position between the fixed frame (11) and the fixed mold (9). A pneumatic cylinder (12) is fixedly mounted in the middle of the left end of the fixed frame (11), and a piston rod of the pneumatic cylinder (12) extends to the right, and the top of the piston rod of the pneumatic cylinder (12) is fixed to the left side of the movable mold (14); The surface of the fixed frame (11) is provided with a plurality of guide rods (10), the other ends of the guide rods (10) are fixedly connected to the fixed frame (11), the surface of the movable mold (14) is provided with a plurality of through-going circular holes, and the circular holes on the surface of the movable mold (14) are slidably connected to the surfaces of the corresponding guide rods (10); The invention is characterized in that: a plurality of molds (13) are provided on the surface of the movable mold (14), and a mold cavity (17) corresponding to the position of each mold (13) is provided on the surface of the fixed mold (9); A connecting pipe opening (8) is provided on the right side of each cavity (17), and the connecting pipe opening (8) is fixed to the right side of the fixed mold (9); An injection molding machine base (2) is fixedly mounted on the right side of the mold base (1), an injection molding machine barrel (5) is fixedly mounted on the top of the injection molding machine base (2), a hopper (4) is fixedly mounted on the top of the outer wall of the injection molding machine barrel (5), a servo motor (3) is provided at the right end of the injection molding machine barrel (5), the bottom of the servo motor (3) is fixed on the injection molding machine base (2), a diverter tube (6) is fixed at the left end of the injection molding machine barrel (5), and a plurality of feed pipes (7) are provided on the outer wall of the diverter tube (6) along a circumference, and each feed pipe (7) is connected to a corresponding connecting pipe port (8).

2. The injection mold for producing electric bicycle plastic parts according to claim 1, characterized in that: A water cooling cavity (16) is provided inside the fixed mold (9), a cold water interface (15) is provided on the side wall of the fixed mold (9), and the water cooling cavity (16) inside the fixed mold (9) is connected to the cold water interface (15) on the side wall of the fixed mold (9).

Images