Motor rear cover terminal fixing jig for injection molding

Abstract

The utility model relates to motor production equipment technical field, especially a motor rear cover terminal fixing jig for injection molding, including base, the base is fixedly connected with jig module, the jig module is annular board, the inside extension of annular board has the bulge to the upwards, the bulge is superior arc along the direction of outer wall, the top of bulge is provided with a plurality of recesses downwards, the front end and rear end of a plurality of recesses are penetrated, a plurality of terminal assemblies are fixedly installed in the inside of recess, through adopting above -mentioned technical scheme, superior arc bulge's structure fits the typical appearance feature of motor rear cover, and the recess structure of bulge top provides the positioning space for terminal assembly, and terminal assembly is firmly fixedly installed in the inside of recess, can avoid the shift of terminal assembly in the injection molding process, improves the quality and production efficiency of motor rear cover terminal injection molding.

Description

Technical Field

[0001] This utility model relates to the field of motor production equipment technology, and in particular to a motor rear cover terminal fixing fixture for injection molding. Background Technology

[0002] In the field of motor manufacturing, the motor back cover is an important component of the motor. Its structural design and manufacturing quality play a key role in the overall performance and stability of the motor. Among them, the fixing and injection molding of the terminals on the motor back cover are important links in the manufacturing process, which are directly related to the reliability of the connection between the motor back cover and the external circuit and the normal operation of the motor.

[0003] Currently, fixing the terminals during the injection molding process of motor rear cover terminals often faces numerous challenges. Due to the complexity of the motor rear cover's shape, traditional fixing methods struggle to perfectly match its characteristics, leading to issues such as terminal misalignment and loosening during injection molding. This not only affects the connection strength between the terminals and the motor rear cover but can also cause dimensional deviations and appearance defects in the molded motor rear cover, severely impacting product yield and production efficiency. While some simple fixing devices can position the terminals to some extent, these devices often lack specific design considerations for the motor rear cover's shape. During injection molding, factors such as injection pressure and temperature can cause the terminals to shift within the device, compromising post-molding positional accuracy. Furthermore, traditional fixing methods are cumbersome to install and remove terminal components, increasing operator workload and reducing production efficiency. Therefore, a motor rear cover terminal fixing fixture for injection molding needs to be designed. Utility Model Content

[0004] The purpose of this utility model is to provide a fixing fixture for the motor rear cover terminal of injection molding, so as to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A motor rear cover terminal fixing fixture for injection molding includes a base, on which a fixture module is fixedly connected. The fixture module is an annular plate with an upward protrusion extending inside the annular plate. The protrusion has an arc along its outer wall direction, and multiple grooves are provided downward at the top of the protrusion. The front and rear ends of the multiple grooves are through-through, and terminal assemblies are fixedly installed inside the multiple grooves.

[0007] By adopting the above technical solution, the structure of the arc protrusion matches the typical shape of the motor back cover. The multiple groove structures at the top of the protrusion provide positioning space for the terminal assembly, and the terminal assembly is firmly fixed inside the groove, which can prevent the terminal assembly from shifting during the injection molding process, thereby improving the quality and production efficiency of the motor back cover terminal injection molding.

[0008] In a further embodiment, the terminal assembly includes a plurality of terminals, which are equally spaced from front to back. Each terminal includes a fixing portion and a pin portion, with the pin portion disposed on top of the fixing portion.

[0009] By adopting the above technical solution, the terminals are arranged at equal intervals, which not only ensures that the spacing between adjacent terminals within the same terminal assembly is uniform, but also ensures that the relative positions between different terminal assemblies are precisely aligned, thereby forming a stable array layout. This design can effectively disperse the stress during the injection molding process, reduce the risk of terminal displacement caused by uneven material flow or cooling shrinkage, and effectively suppress the micro-displacement generated during the injection molding process.

[0010] In a further embodiment, a plurality of fixing pins are spaced apart on the left side of the protrusion.

[0011] By adopting the above technical solution, the design of the fixing pin is for drilling a hole at the left end of the motor's rear cover.

[0012] In a further embodiment, the plurality of grooves are provided with a plurality of downward openings on one side close to each other.

[0013] By adopting the above technical solution, the side of the multiple grooves that are close to each other is provided with a downward opening structure. These openings serve as flow channels during injection molding, which can ensure that the molten plastic can quickly and evenly fill the interior of each groove, avoiding defects such as bubbles and material shortages caused by poor venting or uneven filling. At the same time, this optimized design can also reduce injection pressure loss and improve the molding efficiency of injection molded parts.

[0014] In a further embodiment, a plurality of round rods are evenly spaced on the top of the annular plate.

[0015] By adopting the above technical solution, the round rod design is for drilling holes around the perimeter of the motor's rear cover.

[0016] In a further embodiment, the outer periphery of the annular plate is provided with a plurality of through holes at intervals.

[0017] By adopting the above technical solution, the through hole facilitates the insertion and installation of the injection molded part on the fixture.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. The structure of the arc protrusion matches the typical shape of the motor back cover. The multiple grooves on the top of the protrusion provide positioning space for the terminal assembly. The terminal assembly is firmly fixed inside the groove, which can prevent the terminal assembly from shifting during the injection molding process. This can improve the quality and production efficiency of the motor back cover terminal injection molding.

[0020] 2. By adopting an equally spaced terminal arrangement design, not only is the spacing between adjacent terminals within the same terminal assembly uniform, but the relative positions between different terminal assemblies are also precisely aligned, thus forming a stable array layout. This design can effectively disperse stress during the injection molding process, reduce the risk of terminal misalignment caused by uneven material flow or cooling shrinkage, and effectively suppress micro-displacement generated during the injection molding process.

[0021] 3. By placing the base in a suitable working position to ensure its stability, the upward protrusion extending from the annular plate structure of the fixture module has an arc design along its outer wall. Multiple grooves with downward-facing tops on the protrusions are used to install terminal assemblies. The terminal assemblies are fixedly installed one by one in the grooves. Each terminal assembly contains multiple terminals arranged at equal intervals. Each terminal consists of a fixing part and an ejector pin part, with the ejector pin part located on top of the fixing part for subsequent injection molding connection. Multiple downward openings are provided on one side of each pair of adjacent grooves for material flow during injection molding. Multiple round rods evenly arranged at equal intervals on the top of the annular plate are used to punch holes in the injection molded part. During the injection molding process, the molten plastic flows into the gap between the fixture and the injection molded part, forming the required connection structure. After injection molding is completed, the fixing fixture is removed to obtain the motor back cover product with fixed terminals. Attached Figure Description

[0022] Figure 1 This is an overall schematic diagram of the present invention, used to illustrate the connection relationship of the motor rear cover terminal fixing fixture for injection molding.

[0023] In the diagram, 1 is the base; 2 is the fixture module; 3 is the protrusion; 4 is the terminal assembly; 5 is the fixing pin; and 6 is the round rod. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0026] Example 1:

[0027] like Figure 1 As shown, a terminal fixing fixture for a motor rear cover used in injection molding includes a base 1, on which a fixture module 2 is fixedly connected. The fixture module 2 is an annular plate, with an upward protrusion 3 extending from the inside of the annular plate. The protrusion 3 has an arc along its outer wall direction, and three grooves are provided downward at the top of the protrusion 3. The front and rear ends of the three grooves are through-through, and a terminal assembly 4 is fixedly installed inside the three grooves. The terminal assembly 4 includes multiple terminals, which are equally spaced from front to back inside the grooves. Eleven terminals are respectively provided inside the three grooves from left to right. The device includes nine terminals, each terminal comprising a fixing part and a ejector pin part, with the ejector pin part positioned on top of the fixing part; multiple fixing pins 5 are spaced apart on the left side of the protrusion 3; a downward rectangular groove is provided at the center of the top of the left end of the protrusion 3, the left end of which is connected to the interior of the rectangular groove; stepped grooves are symmetrically arranged on the top of the left end of the protrusion 3 about the center line of the rectangular groove; multiple downward openings are provided on one side of the three grooves close to each other; eight round rods 6 are evenly spaced on the top of the annular plate; four through holes are spaced apart on the periphery of the outer wall of the annular plate.

[0028] Specific implementation process: First, place the base 1 in a suitable working position to ensure its stability. The fixture module 2 is the core part, and the upward protrusion 3 extending from the inside of its annular plate structure is a key component. The protrusion 3 has an arc design along its outer wall. Multiple grooves with downward-facing tops of the protrusion 3 are used to install terminal components 4. The terminal components 4 are fixedly installed one by one in the grooves. The terminal components 4 contain multiple terminals arranged at equal intervals. Each terminal consists of a fixing part and an ejector pin part, with the ejector pin part located on top of the fixing part for subsequent injection molding connection. Multiple downward openings are set on one side of each pair of adjacent grooves. The openings serve as flow channels during injection molding, ensuring that the molten plastic can quickly and evenly fill the interior of each groove, avoiding defects such as bubbles and material shortages caused by poor venting or uneven filling, thus improving the molding efficiency of the injection molded parts. Multiple round rods 6 are evenly arranged at equal intervals on the top of the annular plate for punching holes in the injection molded parts. During the injection molding process, the molten plastic flows into the gap between the fixture and the injection molded parts, forming the required connection structure. After the injection molding is completed, the fixing fixture is removed, and the motor back cover product with fixed terminals is obtained.

[0029] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A fixture for fixing the terminal of a motor rear cover for injection molding, comprising a base (1), characterized in that: A fixture module (2) is fixedly connected to the base (1). The fixture module (2) is an annular plate. An upward protrusion (3) extends inside the annular plate. The protrusion (3) is an arc along the outer wall direction. Multiple grooves are provided downward at the top of the protrusion (3). The front and rear ends of the multiple grooves are through. Terminal assemblies (4) are fixedly installed inside the multiple grooves.

2. The motor rear cover terminal fixing fixture for injection molding according to claim 1, characterized in that: The terminal assembly (4) includes multiple terminals, which are equally spaced from front to back. Each terminal includes a fixing part and a pin part, with the pin part located on top of the fixing part.

3. The motor rear cover terminal fixing fixture for injection molding according to claim 1, characterized in that: Multiple fixing pins (5) are spaced apart on the left side of the protrusion (3).

4. The motor rear cover terminal fixing fixture for injection molding according to claim 1, characterized in that: The multiple grooves are provided with multiple downward openings on one side close to each other.

5. A motor rear cover terminal fixing fixture for injection molding according to claim 1, characterized in that: The top of the annular plate is provided with a plurality of round rods (6) at equal intervals.

6. The motor rear cover terminal fixing fixture for injection molding according to claim 1, characterized in that: The outer periphery of the annular plate is provided with multiple through holes at intervals.

Images